7th Class Science Sample Paper

done Science Olympiad Model Test Paper-6 Total Questions - 40    [Download]

• question_answer1)
  The small pores on the leaves through which exchanges of gases such as carbon dioxide and oxygen takes place is known as:
  A)
  Chlorophyll
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  B)
  Stomata
  done clear
  C)
  Lenticels
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
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• question_answer2)
  The non-green plants which obtain their food from dead and decaying organic substance are called:
  A)
  Parasites
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  B)
  Saprophytes
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  C)
  Symbiotic plants
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  D)
  All of these
  done clear
  E)
  None of these
  done clear
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• question_answer3)
  _______occurs when the pollens grains are transferred from the stamen to the pistil of the same flower.
  A)
  Self-pollination
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  B)
  Cross pollination
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  C)
  Outer pollination
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  D)
  All of these
  done clear
  E)
  None of these
  done clear
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• question_answer4)
  Liver secretes bile in which one of the following parts of digestive system?
  A)
  Oesophagus
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  B)
  Stomach
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  C)
  Small intestine
  done clear
  D)
  Large intestine
  done clear
  E)
  None of these
  done clear
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• question_answer5)
  Match the following :

  1.	Photosynthesis	(A)	Saprophytic nutrition
  2.	Organism living inside or on other animals to derive their nutrition	(B)	Root hairs
  3.	Plants absorb water from soil through	(C)	Transpiration
  4.	Loss of water from stomata on leaves	(D)	Green plants produce their own food
  5.	Mildew grown on plant	(E)	Parasite

  A)
  1 - D, 2 - E, 3 - B, 4 - C, 5 - A
  done clear
  B)
  1 - D, 2 - C, 3 - B, 4 - E, 5 - A
  done clear
  C)
  1 - E, 2 - D, 3 - C, 4 - B, 5 - A
  done clear
  D)
  1 - E, 2 - D, 3 - C, 4 - A, 5 - B
  done clear
  E)
  None of these
  done clear
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• question_answer6)
  The long woolen fibres are twisted into thick yarn called wool. This process is known as:
  A)
  Sorting
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  B)
  Dyeing
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  C)
  Spinning
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  D)
  Combing
  done clear
  E)
  None of these
  done clear
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• question_answer7)
  The process of taking out silk fibres from the cocoons for use as silk is called:
  A)
  Reeling
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  B)
  Shearing
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  C)
  Sorting
  done clear
  D)
  Spinning
  done clear
  E)
  None of these
  done clear
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• question_answer8)
  How many bulb will glow when the switch 'S' is in the ?OFF? position in the given circuit?
  A)
  Two (L1 and L2)
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  B)
  Three (L1, L2 and L3)
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  C)
  One (L1)
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
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• question_answer9)
  Oxide of which one of the following non-metals is dissolved in water for preparing an acid?
  A)
  Nitrogen
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  B)
  Carbon
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  C)
  Sulphur
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
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• question_answer10)

  Consider the following two statements :

  Statement: 1. When magnesium oxide reacts with water, magnesium hydroxide is formed.

  Statement: 2. When magnesium oxide reacts with water, magnesium sulphate is formed.

  Which one of the following is correct with respect to the above statements?

  A)
  Statement 1 is false and 2 is true
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  B)
  Both statement 1 and 2 are true
  done clear
  C)
  Both statement 1 and 2 are false
  done clear
  D)
  Statement 2 is false and 1 is true
  done clear
  E)
  None of these
  done clear
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• question_answer11)
  Bases that are soluble in water are called _____.
  A)
  Alkalis
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  B)
  Salt
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  C)
  Acid
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  D)
  Both a and c
  done clear
  E)
  None of these
  done clear
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• question_answer12)
  Which one of the following is correct for the reaction between lime water and carbon dioxide?
  A)
  \[Ca{{(OH)}_{2}}+C{{O}_{2}}\to CaHC{{O}_{3}}+{{O}_{2}}\]
  done clear
  B)
  \[Ca{{(OH)}_{2}}+C{{O}_{2}}\to CaC{{O}_{3}}+{{H}_{2}}O\]
  done clear
  C)
  \[CaC{{O}_{3}}+C{{O}_{2}}\to Ca{{(OH)}_{2}}+{{H}_{2}}O\]
  done clear
  D)
  \[CaC{{O}_{3}}+C{{O}_{2}}\to Ca{{(OH)}_{2}}+{{O}_{2}}\]
  done clear
  E)
  None of these
  done clear
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• question_answer13)
  Match the following :

  1.	Seal	(A)	Can both plants and other animals
  2.	Camel	(B)	Living in the polar regions
  3.	Bears	(C)	Living on tall trees
  4.	Monkey	(D)	Living in desert

   
  A)
  1 - D, 2 - C, 3 - A, 4 - B
  done clear
  B)
  1 - D, 2 - C, 3 - B, 4 ? A
  done clear
  C)
  1 - D, 2 - B, 3 - A, 4 - C
  done clear
  D)
  1 - B, 2 - D, 3 - A, 4 - C
  done clear
  E)
  None of these
  done clear
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• question_answer14)
  Name the area of the earth near both sides of the equator.
  A)
  Polar region
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  B)
  Tropical region
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  C)
  Transition region
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  D)
  All of these
  done clear
  E)
  None of these
  done clear
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• question_answer15)
  The loud sound which is heard a little after a lightning flash is seen in the sky is called:
  A)
  Storm
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  B)
  Lightning
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  C)
  Thunder
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  D)
  All of these
  done clear
  E)
  None of these
  done clear
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• question_answer16)
  Which one of the following precautions is correct for safety from storm accompanied lightning?
  A)
  Do not take shelter under an isolated tree
  done clear
  B)
  Do not take shelter under an umbrella having a metallic handle.
  done clear
  C)
  Do not sit near a window
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
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• question_answer17)
  Look at the following picture of direction of air from north-west: In which one of the following season, air is blown in the given direction?
  A)
  Winter
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  B)
  Summer
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  C)
  Rainy
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  D)
  All of these
  done clear
  E)
  None of these
  done clear
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• question_answer18)
  The process of combination of simple food molecules with oxygen to produce energy is called______.
  A)
  Transportation
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  B)
  Respiration
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  C)
  Digestion
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  D)
  Both a and b
  done clear
  E)
  None of these
  done clear
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• question_answer19)
  Which one of the following equation is correct for the respiration performed by yeast?
  A)
  Glucose \[\underline{Nooxygen}\]Carbon dioxide + Water + Energy
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  B)
  Glucose \[\underline{Nooxygen}\] Alcohol + Water + Energy
  done clear
  C)
  Glucose \[\underline{Nooxygen}\] Lactic acid + Water + Energy
  done clear
  D)
  Glucose \[\underline{Nooxygen}\] Alcohol + Carbon dioxide + Energy
  done clear
  E)
  None of these
  done clear
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• question_answer20)
  In which one of the following types of respiration complete breaks down of food occurs?
  A)
  Aerobic respiration         
  done clear
  B)
  Anaerobic respiration
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  C)
  External respiration
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
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• question_answer21)
  Name the part of the tooth which contains nerves and blood vessels.
  A)
  Enamel
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  B)
  Pulp cavity
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  C)
  Dentine
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  D)
  All of these
  done clear
  E)
  None of these
  done clear
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• question_answer22)
  Anish is reversing his car at a speed of 3 m/s. Find the speed at which the image of the truck which is parked behind his car appears to approach Anish if the rear view mirror of his car is a plane mirror.
  A)
  6 m/s
  done clear
  B)
  5 m/s                
  done clear
  C)
  2 m/s
  done clear
  D)
  10 m/s
  done clear
  E)
  None of these
  done clear
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• question_answer23)
  Spirogyra reproduces by which one of the following types of reproduction?
  A)
  Spore formation
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  B)
  Budding
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  C)
  Fragmentation
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  D)
  All of these
  done clear
  E)
  None of these
  done clear
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• question_answer24)
  Choose the correct statement for the given lens.
  A)
  It diverges the light hence called diverging lens.
  done clear
  B)
  It converges the light hence called converging lens.                             
  done clear
  C)
  It is a convex lens.
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
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• question_answer25)
  Amit performs an experiment in laboratory, he takes two test tubes, label, A and B. He puts one teaspoonful of boiled rice in test tube A, and keep one teaspoonful of boiled rice after chewing it for 3 to 5 minutes in test tube B. He adds 3 - 5 ml of water in both the test tubes, Now pour 2- 3 drops of iodine solution in each test tube. What is the conclusion of the experiment performed by Amit?
  A)
  The saliva breaks down the starch into sugar.
  done clear
  B)
  The test tube A containing boiled rice does not react with iodine, because of the absence of saliva.
  done clear
  C)
  The colour of the test tube A is the colour of iodine solution.
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
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• question_answer26)
  What is the colour of indicator litmus in distilled water?
  A)
  Purple
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  B)
  Pink
  done clear
  C)
  Blue
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
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• question_answer27)
  Acidic liquid is injected into the skin of human beings by ant when it bites. Which one of the following chemical can neutralized the effect of the injected acid?
  A)
  Calamine
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  B)
  Zinc carbonate
  done clear
  C)
  Sodium hydrogen carbonate
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
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• question_answer28)
  Which one of the following acid controls every feature of the body such as our looks, colour of our eyes, our height etc.?
  A)
  Deoxyribonucleic acid
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  B)
  Amino acid
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  C)
  Fatty acid
  done clear
  D)
  Hydrochloric acid
  done clear
  E)
  None of these
  done clear
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• question_answer29)

  Aman: The day to day condition of the atmosphere of a place with respect to the temperature, humidity, rainfall, wind speed, etc. is called the weather at that place.

  Bhawesh: The average weather pattern taken over a long time say 25 years is called the climate of the place.

  Who is correct?

  A)
  Aman
  done clear
  B)
  Bhawesh
  done clear
  C)
  Both are correct
  done clear
  D)
  Both are incorrect
  done clear
  E)
  None of these
  done clear
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• question_answer30)
  A cyclone is known by different names in different parts of the world. What is called the cyclone in American continent?
  A)
  Cyclone
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  B)
  Hurricane
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  C)
  Typhoon
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  D)
  Tornado
  done clear
  E)
  None of these
  done clear
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• question_answer31)
  What happens with the diaphragm during inhalation (taking air in)?
  A)
  Diaphragm moves down
  done clear
  B)
  Diaphragm moves upward
  done clear
  C)
  Diaphragm does not moves any way
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
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• question_answer32)
  Exhaled air contains ______of carbon dioxide.
  A)
  21%     
  done clear
  B)
  4.4%
  done clear
  C)
  50%
  done clear
  D)
  6.2%
  done clear
  E)
  None of these
  done clear
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• question_answer33)
  Match the following :

  1.	Stomata	(A)	Absorption of water
  2.	Xylem	(B)	Transpiration
  3.	Root hairs	(C)	Transport of water
  4.	Phloem	(D)	Transport of water
  		(E)	Synthesis of carbohydrates

  A)
  1 - A, 2 - D, 3 - B, 4 - C
  done clear
  B)
  1 - C, 2 - D, 3 - A, 4 - B
  done clear
  C)
  1 - B, 2 - D, 3 - A, 4 ? C
  done clear
  D)
  1 - C, 2 - A, 3 - D, 4 - B
  done clear
  E)
  None of these
  done clear
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• question_answer34)
  Look at the given distance - time graph for the motion of two vehicles A and B: Which one of them is moving faster?
  A)
  A
  done clear
  B)
  B
  done clear
  C)
  Both are moving at the same speed
  done clear
  D)
  This is not the correct time distance graph
  done clear
  E)
  None of these
  done clear
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• question_answer35)
  Four cells are connected each other in the given arrangement: What is the value of\[{{V}_{0}}\]?
  A)
  24 V    
  done clear
  B)
  12 V
  done clear
  C)
  48 V    
  done clear
  D)
  0 V
  done clear
  E)
  None of these
  done clear
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• question_answer36)
  Peter takes around 60 cm long piece of insulated flexible wire and an iron nail, about 6-10 cm long. He wind the wire tightly around the nail in the form of coil and connects free ends of wire to a cell. What does he notice when pins are brought near the tip of the nail?
  A)
  Nail attracts the pins
  done clear
  B)
  Nail repel the pins
  done clear
  C)
  Nothing will happen with the pins
  done clear
  D)
  Nail break the pins
  done clear
  E)
  None of these
  done clear
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• question_answer37)
  Through which one of the following parts oxygen from air diffuse into blood vessels?
  A)
  Larynx
  done clear
  B)
  Pharynx
  done clear
  C)
  Alveoli
  done clear
  D)
  Bronchus
  done clear
  E)
  None of these
  done clear
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• question_answer38)
  Which one of the following types of bacteria is used in composting pits that convert human excreta into compost?
  A)
  Aerobic bacteria
  done clear
  B)
  Anaerobic bacteria
  done clear
  C)
  Clostridium tetani
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
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• question_answer39)
  Which one of the following is the inorganic impurities present in sewage?
  A)
  Metals
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  B)
  Urine
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  C)
  Vegetable wastes
  done clear
  D)
  Animal dung
  done clear
  E)
  None of these
  done clear
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• question_answer40)
  What is obtained after cutting off ?wool coat? of a sheep along with a thin layer of skin?
  A)
  Shearing
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  B)
  Scouring
  done clear
  C)
  Sorting
  done clear
  D)
  Fleece
  done clear
  E)
  None of these
  done clear
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