SSC General Science & Technology Sample Paper

done NCERT Sample Paper-2 Total Questions - 100    [Download]

• question_answer1)

  Consider the following statements:

  1. For a normal human eye, the least distance of distinct vision of 25 cm.

  2. The person suffering of colour blindness cannot distinguish the red and green colours distinctly.

  3. The colour blindness depends on various defects of the cylindrical (conical) cell of the retina.

  4. The presbyopia affected person uses bifocal lens and cylindrical lens. Which of the statements given above are correct?

  A)
   1, 2 and 4
  done clear
  B)
          2 and 3
  done clear
  C)
   2 and 3
  done clear
  D)
   1, 2 and 3
  done clear
  View Answer play_arrow

• question_answer2)
  In calves that consume large quantities of milk, the curdling of milk takes place due to:
  A)
   The action of pepsin
  done clear
  B)
   A large variety of useful bacteria
  done clear
  C)
   The action of rennin
  done clear
  D)
   The high acid content of gastric juice
  done clear
  View Answer play_arrow

• question_answer3)
  Air from an electric bulb is removed because in its presence
  A)
   The filament cannot glow properly
  done clear
  B)
   Oxygen would bum the filament by combustion
  done clear
  C)
   The filament would get rusty
  done clear
  D)
   The filament would combine with nitrogen of the air
  done clear
  View Answer play_arrow

• question_answer4)
  The element present in the largest amount in rocks and minerals is:
  A)
   Silicon 
  done clear
  B)
   Carbon
  done clear
  C)
   Hydrogen         
  done clear
  D)
   Gold
  done clear
  View Answer play_arrow

• question_answer5)
  When a person enters a dark room from bright light, he is not able to see clearly for a little while because the
  A)
   Distance between the lens and retina takes time to adjust
  done clear
  B)
   Eye is unable to adjust itself immediately
  done clear
  C)
   Iris is unable to dilate the pupil immediately
  done clear
  D)
   Retina becomes insensitive momentarily
  done clear
  View Answer play_arrow

• question_answer6)
  In refrigerators, the liquid used as refrigerant is
  A)
   Liquid nitrogen
  done clear
  B)
          Liquid carbon dioxide
  done clear
  C)
   Liquid ammonia 
  done clear
  D)
            Super-cooled water
  done clear
  View Answer play_arrow

• question_answer7)

  Which of the following statements about Airplanes are correct?

  1. Today's jet airplanes use the same principles of aerodynamics that the Wright brothers used in 1903 to get their Flyer in the air.

  2. Flight requires two things: thrust and lift.

  3. Thrust is the forward motion provided by a propeller or jet engine.

  4. A wing has to be designed not only to produce lift, but also to minimize the friction with passing air, which causes drag.

  Codes:
  A)
   1, 2 and 3        
  done clear
  B)
   1, 3 and 4
  done clear
  C)
   2, 3 and 4        
  done clear
  D)
   All the above
  done clear
  View Answer play_arrow

• question_answer8)
  An artificial satellite can be tracked very precisely from the earth by using
  A)
   Doppler-effect
  done clear
  B)
   radar
  done clear
  C)
   Sonar  
  done clear
  D)
   Zeeman Effect
  done clear
  View Answer play_arrow

• question_answer9)
  On a hot sultry afternoon, a fat person sweats far more profusely than a lean one of the some height. This is due to:
  A)
   The presence of more sweat pores depending upon greater surface area in a fat person
  done clear
  B)
   increase in the size of pores on the skin depending upon greater pressure exerted by sweat
  done clear
  C)
   Increased rate of fat metabolism
  done clear
  D)
   Greater surface area in a lean person and, therefore, increased rate of evaporation of sweat formed
  done clear
  View Answer play_arrow

• question_answer10)
  The richest sources of Vitamin-B12 are
  A)
   Goats liver and Spirulina
  done clear
  B)
   Chocolate and green gram
  done clear
  C)
   Rice and hen's egg
  done clear
  D)
   Carrot and chicken's breast
  done clear
  View Answer play_arrow

• question_answer11)
  The function of fuse in an electrical circuit is:
  A)
   To regulate the flow of current
  done clear
  B)
   To avoid electric shock
  done clear
  C)
   To break the circuit in case of overloading or short circuiting
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer12)
  Honey that has a high concentration of sugar does not decay because:
  A)
   Bacteria cannot survive in an active state as it is totally deprived of oxygen
  done clear
  B)
   It contains natural antioxidant that prevents bacterial attack
  done clear
  C)
   Bacteria cannot survive in an active state in a solution of high osmotic strength as water is drawn out
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer13)

  Study the following statements:

  1. Bisexual flowers contains both male and female reproductive organs.

  2. Unisexual flower has only one essential floral whorl, either androecium or gynoecium.

  Which of the statement(s) given above is/are correct about flowers?

  A)
   Only 1 
  done clear
  B)
   Only 2
  done clear
  C)
   1 and 2
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer14)
  If there were no atmosphere, the length of the day would:
  A)
   Decrease          
  done clear
  B)
   remain unaffected
  done clear
  C)
   Increase           
  done clear
  D)
   be almost half
  done clear
  View Answer play_arrow

• question_answer15)
  Milk tastes sour when kept in the open for some time due to the formation of:
  A)
   Malic acid        
  done clear
  B)
   carbonic acid
  done clear
  C)
   Citric acid        
  done clear
  D)
   lactic acid
  done clear
  View Answer play_arrow

• question_answer16)
  If an electric current is passed through a nerve, the man:
  A)
   Begins to laugh
  done clear
  B)
   Begins to weep
  done clear
  C)
   Is excited
  done clear
  D)
   becomes insensitive to pain
  done clear
  View Answer play_arrow

• question_answer17)

  Which of the following statements about sexual reproduction in flowering plants are correct?

  1. Stamen is present in the centre of a flower.

  2. Stamen produces pollen grains in the ovary.

  3. The swollen bottom part of carpel is the ovary.

  4. The fusion of germ cells gives rise to zygote.

  Select the correct answer using the codes given below:

  A)
   2, 3 and 4        
  done clear
  B)
   2 and 4
  done clear
  C)
   1 and 3
  done clear
  D)
   All of these
  done clear
  View Answer play_arrow

• question_answer18)
  The twinkling of stars can be partly attributed to:
  A)
   Convection currents in the atmosphere
  done clear
  B)
   Atmospheric refraction
  done clear
  C)
   The unstable motion of the earth
  done clear
  D)
   Intermittent shining
  done clear
  View Answer play_arrow

• question_answer19)
  The best way of sterilising a hypodermic syringe for injecting medicine is by
  A)
   Keeping it in alcohol for some time
  done clear
  B)
   Cleaning it with an alcohol-water mixture
  done clear
  C)
   Boiling it in water
  done clear
  D)
   Boiling it in water in a pressure cooker
  done clear
  View Answer play_arrow

• question_answer20)
  If an old tree is cut transversely, distinct growth rings are visible and it is possible to calculate the age of a tree by counting such rings. These rings are most prominent in:
  A)
   Tropical plants
  done clear
  B)
          polar plants
  done clear
  C)
   Sub-tropical plants
  done clear
  D)
   temperate plants
  done clear
  View Answer play_arrow

• question_answer21)
  A green leaf placed in a dark room is illuminated by red light. The leaf appears:
  A)
   Green  
  done clear
  B)
   red
  done clear
  C)
   Yellow 
  done clear
  D)
   black
  done clear
  View Answer play_arrow

• question_answer22)
  Evolutionary convergence is development of
  A)
   Common set of characters in group of different ancestry
  done clear
  B)
   Dissimilar characters in closely related groups
  done clear
  C)
   Common set of characters in closely related groups
  done clear
  D)
   Random mating
  done clear
  View Answer play_arrow

• question_answer23)
  During summer; we feel comfortable under a fan because it:
  A)
   Produces air which carries heat away from the body
  done clear
  B)
   Sets the air in motion, thereby increasing the evaporation of sweat
  done clear
  C)
   Produces convection currents
  done clear
  D)
   Throws cool air on us
  done clear
  View Answer play_arrow

• question_answer24)
  A doctor advises a patient to take plenty of citrus fruits, guavas, tomatoes and alms over a period of two months regularly. What do you think is the complaint of the patient?
  A)
   Softness and pain in bones, bending of vertebral column
  done clear
  B)
   Gums spongy, swollen and bleed easily
  done clear
  C)
   Blurred vision, burning and dryness of eye and tongue, cracking of skin of angle of mouth
  done clear
  D)
   Extreme weakness, swelling and pain in legs of appetite headache
  done clear
  View Answer play_arrow

• question_answer25)
  Which of the following statements regarding enzyme inhibition is correct?
  A)
   Competitive inhibition is seen when a substrate competes with an enzyme for binding to an inhibitor protein.
  done clear
  B)
   Competitive inhibition is seen when the substrate and the inhibitor compete for the active site on the enzyme
  done clear
  C)
   Non- competitive inhibition of an enzyme can be overcome by adding large amounts of substrate.
  done clear
  D)
   Non-competitive inhibitors often bind to the enzyme irreversibly.
  done clear
  View Answer play_arrow

• question_answer26)
  When a person, after a certain degree of exertion, suffers from pain in the chest or below the collar bones in the event of inadequate supply of oxygen to the heart muscles, he is said to suffer from:
  A)
   coronary thrombosis      
  done clear
  B)
   Myocardial infraction
  done clear
  C)
   Angina pectoris
  done clear
  D)
          Arteriosclerosis
  done clear
  View Answer play_arrow

• question_answer27)
  Total internal reflection, of light can occur only when light passes:
  A)
   From denser to a rarer medium
  done clear
  B)
   From rarer to a denser medium
  done clear
  C)
   From one medium to another of equal refractive index
  done clear
  D)
   From one medium to another of equal absorption coefficient
  done clear
  View Answer play_arrow

• question_answer28)
  Woollens keeps us warm in winter because they:
  A)
   Do not allow our body heat to escape
  done clear
  B)
   Are good absorbers of heat
  done clear
  C)
   Produce more warmth
  done clear
  D)
   Do not allow cool air to enter
  done clear
  View Answer play_arrow

• question_answer29)
  Radio carbon dating is used to estimate the ages of
  A)
   Babies 
  done clear
  B)
   fossils
  done clear
  C)
   Rocks  
  done clear
  D)
   ancient buildings
  done clear
  View Answer play_arrow

• question_answer30)
  When fishes are kept in an aquarium containing water but no aquatic plants, they frequently come to the surface and float in a semi vertical position for want of:
  A)
   Air                              
  done clear
  B)
   Oxygen
  done clear
  C)
   Dissolved oxygen
  done clear
  D)
          Fresh supply of oxygen
  done clear
  View Answer play_arrow

• question_answer31)
  Pitch of sound depends upon it:
  A)
   wavelength
  done clear
  B)
   Frequency
  done clear
  C)
   Amplitude
  done clear
  D)
   Periodicity and regularity
  done clear
  View Answer play_arrow

• question_answer32)
  A vein possesses a large lumen because
  A)
   Tunica media and tunica externa form a single out
  done clear
  B)
   tunicaintema and tunica media form a single coat
  done clear
  C)
   tunicaintema, tunica media and tunica extemaare thin
  done clear
  D)
   Tunica media is a thin coat
  done clear
  View Answer play_arrow

• question_answer33)
  It is easier to roll a barrel than to pull it because:
  A)
   The surface are of the barrel in contact with the-road is more in the case of pulling
  done clear
  B)
   Rolling friction is much less than sliding friction
  done clear
  C)
   Of a reason other than those mentioned
  done clear
  D)
   The full weight of the barrel comes into play when it is pulled
  done clear
  View Answer play_arrow

• question_answer34)
  Exposure to carbon monoxide (from coal gas) is extremely dangerous and can kill a patient because:
  A)
   \[CO{{H}_{6}}\] Reduces the ability of blood to transport oxygen by rupturing a vast majority of erythrocytes
  done clear
  B)
   \[CO{{H}_{6}}\] Greatly modifies the structure of haemoglobin thus making it lose is affinity for oxygen
  done clear
  C)
   \[CO{{H}_{6}}\] (is stable compound and thus deprives blood of its ability to transport oxygen
  done clear
  D)
   The compound carboxyl-haemoglobin, can gradually clot the blood resulting in circulatory failure
  done clear
  View Answer play_arrow

• question_answer35)
  What is the 'critical temperature' of water vapour?
  A)
   \[0{}^\circ C\]             
  done clear
  B)
   less than \[100{}^\circ C\]
  done clear
  C)
   \[100{}^\circ C\]         
  done clear
  D)
   more than \[100{}^\circ C\]
  done clear
  View Answer play_arrow

• question_answer36)
  The process of mating between closely related individual is
  A)
   Self-breeding    
  done clear
  B)
   inbreeding
  done clear
  C)
   Hybridization    
  done clear
  D)
   heterosis
  done clear
  View Answer play_arrow

• question_answer37)
  Bats can fly in the dark because
  A)
   They have a better vision in the dark
  done clear
  B)
   Any bird can be do so
  done clear
  C)
   They are guided by ultrasonic waves produced by them
  done clear
  D)
   The pupils of their eye- are very big
  done clear
  View Answer play_arrow

• question_answer38)
  A powerful eye irritant present in smog is:
  A)
   Ozone 
  done clear
  B)
   Nitric Acid
  done clear
  C)
   Peroxyacetyl Nitrate
  done clear
  D)
   Sulphur Dioxide
  done clear
  View Answer play_arrow

• question_answer39)
  The vitamin-C or ascorbic acid prevents
  A)
   Rickets 
  done clear
  B)
   Pellagra
  done clear
  C)
   Scurvy
  done clear
  D)
   Antibody Synthesis
  done clear
  View Answer play_arrow

• question_answer40)
  Heat is transmitted from higher to lower temperature through actual mass motion of the molecules in:
  A)
   Conduction      
  done clear
  B)
   Convection
  done clear
  C)
   Radiation         
  done clear
  D)
   All of The Above
  done clear
  View Answer play_arrow

• question_answer41)
  A Transformer is a device for:
  A)
   Generating Electricity
  done clear
  B)
   Converting Ac Into Dc
  done clear
  C)
   Stepping Up (Or Down) Ac Voltage
  done clear
  D)
   Stepping Down (Or Up) Dc Voltage
  done clear
  View Answer play_arrow

• question_answer42)
  Coal burning power plants and factories are responsible for about 86% of:
  A)
   Sulphur dioxide in the atmosphere
  done clear
  B)
   Chlorine in the atmosphere
  done clear
  C)
   Carbon monoxide in the atmosphere
  done clear
  D)
   Nitrogen dioxide in the atmosphere
  done clear
  View Answer play_arrow

• question_answer43)
  Barr body in mammals represents
  A)
   All the heterochromatin in female cells
  done clear
  B)
   Y- chromosomes in somatic cells of male
  done clear
  C)
   All heterochromatin in male and female cells
  done clear
  D)
   One of the two X - chromosomes in somatic cells of females
  done clear
  View Answer play_arrow

• question_answer44)
  Soap bubbles show multiple colours when viewed in white light because
  A)
   The disperation of light
  done clear
  B)
   The interference of the reflected light
  done clear
  C)
   The scattering of light by thin film
  done clear
  D)
   The characteristic colour of soap solution
  done clear
  View Answer play_arrow

• question_answer45)
  An iron ball and a wooden ball are released from a height in vacuum. The speed of the iron ball would be:
  A)
   Same to the speed of the wooden ball
  done clear
  B)
   More than the speed of the wooden ball
  done clear
  C)
   Lesser than the speed of the wooden ball
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer46)
  The sun appears deep orange-red before it sets because:
  A)
   It emits only orange-red light
  done clear
  B)
   It is hotter at the end of the day
  done clear
  C)
   Its light has to traverse a thicker atmosphere, therefore other colour get scattered and do not react us
  done clear
  D)
   It contains more helium in the evening
  done clear
  View Answer play_arrow

• question_answer47)
  Following replacement of breast feeding by less nutritive food low in proteins and calories, infants below the age of one year suffer from:
  A)
   Pellagra           
  done clear
  B)
   marasmus
  done clear
  C)
   Kwashiorkor
  done clear
  D)
   rickets
  done clear
  View Answer play_arrow

• question_answer48)
  Match list-I (Gland in the human body) and list-II (Body function controlled) and select the correct answer using the codes given below the lists:

  List-I (Glands)	List-II (Body functions controlled)
  A. Adrenal	1. Growth of bones
  B. Pancreas	2. Level of blood calcium
  C. Parathyroid	3. Salt and water balance in the body
  D. Pituitary	4. Level of blood sugar

  Codes:
  A)
   A\[\to \]1, B\[\to \]4, C\[\to \]3, D\[\to \]2
  done clear
  B)
   A\[\to \]3, B\[\to \]1, C\[\to \]2, D\[\to \]4
  done clear
  C)
   A\[\to \]3, B\[\to \]4, C\[\to \]2, D\[\to \]1
  done clear
  D)
   A\[\to \]4, B\[\to \]2, C\[\to \]3, D\[\to \]1
  done clear
  View Answer play_arrow

• question_answer49)
  What is primary colours?
  A)
   Colour found in nature
  done clear
  B)
   Colour of the rainbow
  done clear
  C)
   Colour in the spectrum of white light
  done clear
  D)
   Colours which cannot be produced by mixing other colours
  done clear
  View Answer play_arrow

• question_answer50)
  A person with blood group AB is sometimes called a universal recipient because of:
  A)
   The presence of antibodies
  done clear
  B)
   Lack of antibodies
  done clear
  C)
   Lack of antigens
  done clear
  D)
   Lack of both antigens and antibodies
  done clear
  View Answer play_arrow

• question_answer51)
  Middle piece of mammalian sperm possesses
  A)
   Mitochondria and centriole
  done clear
  B)
   Mitochondria only
  done clear
  C)
   Centriole only
  done clear
  D)
   Nucleus and mitochondria
  done clear
  View Answer play_arrow

• question_answer52)
  By which of the following methods could a cup of hot coffee lose heat if placed on a metal table in a room?
  A)
   Convection and radiation
  done clear
  B)
   Conduction and radiation
  done clear
  C)
   Conduction and convection
  done clear
  D)
   Conduction, convection and radiation
  done clear
  View Answer play_arrow

• question_answer53)
  Which one of the following is a protein deficiency disease?
  A)
   Eczema
  done clear
  B)
   Cirrhosis
  done clear
  C)
   Kwashiorkor     
  done clear
  D)
   Night Blindness
  done clear
  View Answer play_arrow

• question_answer54)
  Snakes and vultures are eating rats in a field. It wild dogs are let into the field the immediate result will be a:
  A)
   Decrease in the number of snakes
  done clear
  B)
   Decrease in the number of vultures
  done clear
  C)
   Increase in the number of snakes
  done clear
  D)
   Decrease in the number of rats
  done clear
  View Answer play_arrow

• question_answer55)
  The speed of the earth is highest when it is:
  A)
   Farthest from the sun
  done clear
  B)
   Nearest to the sun
  done clear
  C)
   Passing through the month of September
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer56)
  One feels cold after a dip in sea water due to:
  A)
   The difference in temperature between land and sea
  done clear
  B)
   Convection currents
  done clear
  C)
   The evaporation of water on the body
  done clear
  D)
   The deposition of salt on the body
  done clear
  View Answer play_arrow

• question_answer57)
  Once blood clots at a wound, harmful bacteria are prevented from entering by:
  A)
   Scab formation
  done clear
  B)
   Exudation of serum
  done clear
  C)
   Antibodies
  done clear
  D)
   Antitoxins released by the blood clot
  done clear
  View Answer play_arrow

• question_answer58)
  The flying of birds is a proof of Newton's:
  A)
   First law of motion
  done clear
  B)
   Second law of motion
  done clear
  C)
   Third law of motion
  done clear
  D)
   Both second and third law of motion
  done clear
  View Answer play_arrow

• question_answer59)
  In a person of advanced age, the hair becomes thinner gradually. It happens because of decrease in
  A)
   Synthesis of glucose
  done clear
  B)
   Synthesis of proteins
  done clear
  C)
   Energy availability
  done clear
  D)
   Blood supply
  done clear
  View Answer play_arrow

• question_answer60)
  Patients who excrete large quantities of sodium in the urine have:
  A)
   Diseased adrenal medulla
  done clear
  B)
   Defective cells lining the villi of ileum that fail to reabsorb \[No+\]
  done clear
  C)
   Diseased adrenal cortex
  done clear
  D)
   Erratic renal threshold for \[N{{a}^{+}}\]
  done clear
  View Answer play_arrow

• question_answer61)
  A thermostat is a device for:
  A)
   Switching off an electrical appliance
  done clear
  B)
   Measuring temperature
  done clear
  C)
   Regulating temperature
  done clear
  D)
   Producing heat
  done clear
  View Answer play_arrow

• question_answer62)
  What will happen if the secretion of parietal cells of gastric glands is blocked with an inhibitor?
  A)
   Gastric juice will be deficient in chymosin
  done clear
  B)
   Gastric juice will be deficient in pepsinogen
  done clear
  C)
   In the absence of HCI secretion, inactive pepsinogen is not converted into the active enzyme pepsin
  done clear
  D)
   Enterokinase will not be released from the duodenal mucosa and so trypsinogen is not converted to trypsin
  done clear
  View Answer play_arrow

• question_answer63)
  A ball is thrown upwards in a train which is accelerating. The ball will fall:
  A)
   Ahead of the thrower
  done clear
  B)
   Behind the thrower
  done clear
  C)
   In the hands of thrower
  done clear
  D)
   Data inadequate
  done clear
  View Answer play_arrow

• question_answer64)
  When a certain mass of liquid is heated in a glass flask?
  A)
   The liquid level starts rising at once
  done clear
  B)
   The density of the liquid increases
  done clear
  C)
   The density of the liquid remains unchanged
  done clear
  D)
   The liquid level falls at first and then starts rising
  done clear
  View Answer play_arrow

• question_answer65)
  Which of the micro-organism is used for production of citric acid in industries?
  A)
   Lactobacillus bulgaris
  done clear
  B)
   Penicilliumcitrinum
  done clear
  C)
   Aspergillusniger
  done clear
  D)
   Rhizopusnigricans
  done clear
  View Answer play_arrow

• question_answer66)
  Which one of the following would a hydrogen balloon find easier to lift?
  A)
   1 kg of copper
  done clear
  B)
   1 kg of water
  done clear
  C)
   1 kg of loosely packed feathers
  done clear
  D)
   All the same
  done clear
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• question_answer67)
  Mosquitoes breed on the free surface of stagnant water because:
  A)
   The eggs can be supported by the higher surface-tension of the liquid
  done clear
  B)
   The eggs can only grow in filthy water
  done clear
  C)
   The liquid provides higher buoyancy to the eggs
  done clear
  D)
   Density of the egg is less than density of the liquid
  done clear
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• question_answer68)
  When compared to the mammals, birds are less sensitive to temporary deprivation of water, because
  A)
   Urea excretion in mammals entails a greater loss of water than that in birds.
  done clear
  B)
   The water requirement per unit weight is less in birds than in mammals.
  done clear
  C)
   Absorption of water from the gut is more efficient in birds than in mammals.
  done clear
  D)
   None of these
  done clear
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• question_answer69)
  Inside the airplane flying at a high altitude:
  A)
   The pressure is the same as that outside
  done clear
  B)
   Normal atmospheric pressure is maintained by the use of air pumps
  done clear
  C)
   The normal humidity and partial vacuum are maintained
  done clear
  D)
   The pressure inside is less than the pressure outside
  done clear
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• question_answer70)
  Rising of dough in the process of manufacture of bread is:
  A)
   Because of evaporation of water in kneading the dough
  done clear
  B)
   Due to capillary action of water in the dough
  done clear
  C)
   Through the action of carbon-dioxide
  done clear
  D)
   Through the action of heat in the process of baking
  done clear
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• question_answer71)
  If a body is taken from the earth to the moon:
  A)
   Its mass and weight will remain unchanged
  done clear
  B)
   Its mass will be different but weight will remain the same
  done clear
  C)
   Its mass will remain the same but weight will be different
  done clear
  D)
   Both mass and weight will be different
  done clear
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• question_answer72)
  The substance coated on plastic tape-recorder tapes is
  A)
   Zinc oxide        
  done clear
  B)
   magnesium oxide
  done clear
  C)
   Iron sulphate    
  done clear
  D)
   iron oxide
  done clear
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• question_answer73)
  An ordinary clock loses time during summer because the length of the pendulum:
  A)
   Increases and therefore the time-period increases
  done clear
  B)
   Increases and therefore the time-period decreases
  done clear
  C)
   Decreases and therefore the time-period increases
  done clear
  D)
   Decreases and therefore the time-period decreases
  done clear
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• question_answer74)
  Mule is the hybrid of
  A)
   Male horse and mare
  done clear
  B)
   Male donkey and female Horse
  done clear
  C)
   Male horse and female zebra
  done clear
  D)
   Female horse and male zebra
  done clear
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• question_answer75)
  A drug that prevents infection and decay is called a/an
  A)
   Antiseptic         
  done clear
  B)
   germicide
  done clear
  C)
   Analgesic         
  done clear
  D)
   antimalarial drug
  done clear
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• question_answer76)
  People who live at high altitudes have rosy cheeks Because:
  A)
   Haemoglobin has an increased binding affinity for oxygen to become deep red in colour.
  done clear
  B)
   Red cell concentration becomes considerably above the average in response to lowered oxygen pressure
  done clear
  C)
   The rate of capillary circulation increases in the skin to make it look pinkish
  done clear
  D)
   all of these
  done clear
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• question_answer77)

  Consider the following statements:

  1. Gasoline used as fuel in the motor vehicle is a mixture of petrol and alcohol.

  2. Petroleum is also known as liquid gold.

  3. The various components of the petroleum substance are separated through fractional distillation. Which of the statements given above are correct?

  A)
   1 and 2
  done clear
  B)
   1 and 3
  done clear
  C)
   2 and 3
  done clear
  D)
   1, 2 and 3
  done clear
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• question_answer78)
  Smallest particle of an element or a compound which is capable of independent existence is called.
  A)
   Atom  
  done clear
  B)
   Molecule
  done clear
  C)
   Element           
  done clear
  D)
   Compound
  done clear
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• question_answer79)
  Confirmation of the presence of Higgs Boson will justify
  A)
   Both the standard model and superstring theory
  done clear
  B)
   The unification of all the four fundamental forces
  done clear
  C)
   The steady-state model of the universe
  done clear
  D)
   The mass of the fundamental particles
  done clear
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• question_answer80)
  Materials for rain-proof coats and tents owe their water proof properties due to:
  A)
   Surface tension
  done clear
  B)
          viscosity
  done clear
  C)
   Specific gravity
  done clear
  D)
   elasticity
  done clear
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• question_answer81)
  Mercury is a liquid metal because:
  A)
   It has a completely filled s-orbital.
  done clear
  B)
   It has a small atomic size.
  done clear
  C)
   It has a completely filled d-orbital that prevents d-d overlapping of orbitals.
  done clear
  D)
   It has a completely filled d-orbital that causes d-d overlapping.
  done clear
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• question_answer82)
  Stainless steel does not rust because:
  A)
   Nickel present in it does not rust
  done clear
  B)
   Iron forms a hard chemical compound with chromium present in it
  done clear
  C)
   Chromium and nickel combine with iron
  done clear
  D)
   Chromium forms oxide layer and protects iron from rusting.
  done clear
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• question_answer83)
  The gas in atmospheric air-mat helps in burning is
  A)
   Carbon dioxide
  done clear
  B)
          Nitrogen
  done clear
  C)
   Oxygen
  done clear
  D)
   Helium
  done clear
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• question_answer84)
  Oil spreads over the surface of water because:
  A)
   Oil is more dense than water
  done clear
  B)
   Oil is less dense than water
  done clear
  C)
   Oil has more surface tension than water
  done clear
  D)
   Oil has less surface tension than water
  done clear
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• question_answer85)
  Argon is used
  A)
   In radiotherapy for treatment of cancer
  done clear
  B)
   In filling airships
  done clear
  C)
   To obtain low temperature
  done clear
  D)
   In high temperature welding
  done clear
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• question_answer86)
  Life without air would be
  A)
   reductional
  done clear
  B)
   Free from oxidative damage
  done clear
  C)
   Impossible
  done clear
  D)
   Anaerobic
  done clear
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• question_answer87)
  Among the following polymers, the strongest forces are present in
  A)
   Elastomer
  done clear
  B)
   Fibers
  done clear
  C)
   Thermoplastics
  done clear
  D)
   Thermosetting polymers
  done clear
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• question_answer88)
  Hydrogen and helium are kept in two identical bottles at room temperature and atmospheric pressure:
  A)
   Both contain the same number of atoms
  done clear
  B)
   The number of hydrogen atoms will be half of the number of atoms of helium
  done clear
  C)
   The number of atoms of hydrogen will be double the number of atoms of helium
  done clear
  D)
   None of the above statements is true
  done clear
  View Answer play_arrow

• question_answer89)
  The Hottest part of the gas flame is known as the
  A)
   Blue zone         
  done clear
  B)
   dark zone
  done clear
  C)
   Non-luminous zone
  done clear
  D)
   luminous zone
  done clear
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• question_answer90)
  A motor vehicle is moving on a circle with a uniform speed. The net acceleration of the vehicle is
  A)
   Zero
  done clear
  B)
   Towards the centre of the circle
  done clear
  C)
   Away from the centre along the radius of the circle
  done clear
  D)
   Perpendicular to the radius and along the velocity
  done clear
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• question_answer91)
  Cholesterol is a
  A)
   derivative of chloroform
  done clear
  B)
   Type of chlorophyll
  done clear
  C)
   Fatty alcohol found in animal fats
  done clear
  D)
   Chromium salt
  done clear
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• question_answer92)
  In humans, which brain wave pattern disappears entirely during sleep?
  A)
   Alpha waves
  done clear
  B)
   Beta waves
  done clear
  C)
   Theta waves     
  done clear
  D)
   Delta waves
  done clear
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• question_answer93)
  In humans, which side of cerebral hemisphere recognises the faces of friends and family members?
  A)
   Left cerebral hemisphere
  done clear
  B)
   Right cerebral hemisphere
  done clear
  C)
   Both [a] and [b]
  done clear
  D)
   None of the above
  done clear
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• question_answer94)
  Which of the following is the only poisonous lizard of the world?
  A)
   Ophiosaurus
  done clear
  B)
   Varanus
  done clear
  C)
   Heloderma       
  done clear
  D)
   Draco
  done clear
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• question_answer95)
  Which of these muscles help urinary bladder to expel urine forcefully?
  A)
   Detrusor muscle
  done clear
  B)
   Latissimus dorsi
  done clear
  C)
   Hamstring muscle
  done clear
  D)
   None of the above
  done clear
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• question_answer96)
  We never see birds urinating, why?
  A)
   The birds do not have a urinary system
  done clear
  B)
   The drink less water, so very less urine
  done clear
  C)
   They urinate only at night
  done clear
  D)
   All of the above
  done clear
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• question_answer97)
  Why the cloudy nights are usually warmer than the clear ones?
  A)
   Clouds store heat and release the same at night
  done clear
  B)
   Clouds prevent cold wind to blow down to earth
  done clear
  C)
   The clouds serve as a barrier and prevent the loss of heat
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer98)
  A device which converts chemical energy into electrical energy is called
  A)
   Motor  
  done clear
  B)
   generator
  done clear
  C)
   moving-coil meter
  done clear
  D)
   battery
  done clear
  View Answer play_arrow

• question_answer99)
  Rain water is more fertile than water from tube well, because
  A)
   Rain water is harder
  done clear
  B)
   Tube well water is harder
  done clear
  C)
   Rain water is pure
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer100)
  Why Decomposers are important for life?
  A)
   Decomposers break down animal waste and dead organisms in order to get energy
  done clear
  B)
   Release free nutrients back into the ecosystem
  done clear
  C)
   Break down organics into nutrients
  done clear
  D)
   All the above
  done clear
  View Answer play_arrow