7th Class Science Sample Paper

done Science Olympiad Model Test Paper-1 Total Questions - 40    [Download]

• question_answer1)
  The mode of nutrition, in which food is prepared from simple inorganic substance by the process of photosynthesis, is known as:
  A)
  Autotrophic mode of nutrition
  done clear
  B)
  Heterotrophic mode of nutrition
  done clear
  C)
  Parasitic mode of nutrition
  done clear
  D)
  Saprophytic mode of nutrition
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer2)
  The tiny, pipe-like vessels which transport water from roots to leaves of a plant, is known as:
  A)
  Xylem  
  done clear
  B)
  Phloem
  done clear
  C)
  Chlorophyll
  done clear
  D)
  Chloroplast
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer3)
  Which one of the following parts of a cactus plant performs the process of photosynthesis?
  A)
  Spines  
  done clear
  B)
  Flowers
  done clear
  C)
  Stems   
  done clear
  D)
  Roots
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer4)
  Which one of the following is the widest part of alimentary canal of human body?
  A)
  Oesophagus
  done clear
  B)
  Stomach
  done clear
  C)
  Small intestine
  done clear
  D)
  Large intestine
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer5)

  Which one of the following statements is correct?

  Statement 1: The microscopic living organism amoeba has no fixed shape.

  Statement 2: The microscopic living organism amoeba has fixed shape.

  A)
  Statement 1
  done clear
  B)
  Statement 2
  done clear
  C)
  Both statements are correct
  done clear
  D)
  Both statements are incorrect
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer6)
  Convert \[35{}^\circ C\]to\[\text{ }\!\!{}^\circ\!\!\text{ F}\].
  A)
  \[\text{45 }\!\!{}^\circ\!\!\text{ F}\]        
  done clear
  B)
  \[\text{65 }\!\!{}^\circ\!\!\text{ F}\]
  done clear
  C)
  \[\text{85 }\!\!{}^\circ\!\!\text{ F}\]        
  done clear
  D)
  \[\text{95 }\!\!{}^\circ\!\!\text{ F}\]
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer7)
  Which one of the following materials will expand maximum if same amount of heat energy is given to them?
  A)
  1 kg of iron having temperature of \[20{}^\circ C\]
  done clear
  B)
  1 kg of brass having temperature of \[20{}^\circ C\]
  done clear
  C)
  1 kg of water having temperature of \[20{}^\circ C\]
  done clear
  D)
  1 kg of oxygen gas having temperature of  \[20{}^\circ C\]
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer8)
  What colour does phenolphthalein indicator give in basic solution?
  A)
  Yellow  
  done clear
  B)
  Red
  done clear
  C)
  Pink     
  done clear
  D)
  Colourless
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer9)
  Which one of the following statements is incorrect about bases?
  A)
  Bases have bitter taste
  done clear
  B)
  Bases feel soapy to touch
  done clear
  C)
  Bases neutralize acids
  done clear
  D)
  Bases turn red litmus to yellow
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer10)

  Which one of the following statements is correct?

  Statement 1: The formation of biogas from animal wastes is a physical change.

  Statement 2: The formation of biogas from animal wastes is a chemical change.

  A)
  Statement 1
  done clear
  B)
  Statement 2
  done clear
  C)
  Both statements are correct
  done clear
  D)
  Both statements are incorrect
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer11)
  The chemical reaction in which a compound breaks up into two or more than two substances is known as:
  A)
  Combination reaction     
  done clear
  B)
  Decomposition reaction   
  done clear
  C)
  Displacement reaction
  done clear
  D)
  Neutralization reaction
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer12)
  Which one of the following climates has very high temperature and high humidity?
  A)
  Tropical climate
  done clear
  B)
  Desert climate
  done clear
  C)
  Polar climate                 
  done clear
  D)
  Temperate climate
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer13)
  Which one of the following animals are well adapted to live in polar regions?
  A)
  Penguin and Emu
  done clear
  B)
  Polar bear and python
  done clear
  C)
  Penguin and polar bear
  done clear
  D)
  Jaguar and Siberian crane
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer14)
  The following instrument is used to find:
  A)
  Direction of wind at a place
  done clear
  B)
  Speed of wind at a place
  done clear
  C)
  Atmospheric pressure at a place
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer15)
  Which one of the following factors contributes to the development of a cyclone?
  A)
  Rotation of Earth           
  done clear
  B)
  Humidity
  done clear
  C)
  Wind speed       
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer16)
  Which one of the following layers of soil is formed by partial weathering of bed-rock?
  A)
  A-horizon          
  done clear
  B)
  B-horizon
  done clear
  C)
  C-horizon          
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer17)
  Which one of the following soils is a mixture of sand, clay, silt and humus in right proportion?
  A)
  Sandy soil         
  done clear
  B)
  Clayey soil
  done clear
  C)
  Loamy soil
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer18)
  Which one of the following statements is incorrect about respiration?
  A)
  In anaerobic respiration, partial breakdown of food occurs
  done clear
  B)
  In anaerobic respiration, complete breakdown of food occurs
  done clear
  C)
  Anaerobic respiration takes place in absence of oxygen
  done clear
  D)
  Yeast carries out anaerobic respiration to obtain energy
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer19)
  Which one of the following is not a part of human respiratory system?
  A)
  Trachea
  done clear
  B)
  Bronchi
  done clear
  C)
  Diaphragm        
  done clear
  D)
  Glomerulus
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer20)
  Which one of the following components of blood carry oxygen from lungs to the cells of the body?
  A)
  Plasma 
  done clear
  B)
  RBC
  done clear
  C)
  WBC    
  done clear
  D)
  Platelets
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer21)
  How many chambers are there in human heart?
  A)
  One                 
  done clear
  B)
  Two
  done clear
  C)
  Three   
  done clear
  D)
  Four
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer22)
  Which one of the following waste products is removed by the kidney from the blood?
  A)
  Urea and salt
  done clear
  B)
  Carbon dioxide and sugar
  done clear
  C)
  Oxygen and salt
  done clear
  D)
  Glucose and salt
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer23)
  In vegetative propagation, new plants are produced from which of the following parts of old plant?
  A)
  Stems   
  done clear
  B)
  Leaves
  done clear
  C)
  Roots   
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer24)
  Which one of the following plants reproduces by means of spores?
  A)
  Rose and Mango
  done clear
  B)
  Fern and Mosses
  done clear
  C)
  Yeast and Bryophyllum
  done clear
  D)
  Coconut and water lily
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer25)
  Which one of the following parts of flower makes pollen grains and stores them?
  A)
  Anther  
  done clear
  B)
  Stigma
  done clear
  C)
  Style                
  done clear
  D)
  Filament
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer26)
  Which one of the following plants disperses its seeds by explosive mechanism?
  A)
  Coconut plant   
  done clear
  B)
  Maple plant
  done clear
  C)
  Xanthium                     
  done clear
  D)
  Balsam plant
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer27)
  The swinging of a pendulum is an example of which one of the following kind of motion?
  A)
  Rectilinear motion
  done clear
  B)
  Circular motion
  done clear
  C)
  Rotational motion
  done clear
  D)
  Periodic motion
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer28)
  What is the S.I. unit of speed?
  A)
  Meter per second
  done clear
  B)
         Kilometer per second                  
  done clear
  C)
  Meter per minute
  done clear
  D)
  Kilometer per hour
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer29)
  A car moves with a speed of 60 km/h for 20 minutes and then with a speed of 80 km/h for next 30 minutes. Find the total distance covered by the car.
  A)
  60 km  
  done clear
  B)
  70 km
  done clear
  C)
  72 km  
  done clear
  D)
  75 km
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer30)
  A simple pendulum completes 60 oscillations in 30 seconds. Find the time-period of the pendulum.
  A)
  2 seconds                      
  done clear
  B)
  1 second
  done clear
  C)
  1.5 second        
  done clear
  D)
  0.5 second
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer31)
  If amount of current passing through a wire is increases, amount of heat produces in the wire will:
  A)
  Decrease           
  done clear
  B)
  Increase
  done clear
  C)
  Remain unchanged
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer32)
  The electrical appliances like room heater and electric iron works on:
  A)
  Heating effect of current  
  done clear
  B)
  Magnetic effect of current
  done clear
  C)
  Chemical effect of current
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer33)
  Which one of the following characteristics of image formed by a plane mirror is not correct?
  A)
  Image is always formed behind the mirror
  done clear
  B)
  Image can be obtained on a screen
  done clear
  C)
  Image is of same size as the object
  done clear
  D)
  Image is laterally inverted with respect to the object
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer34)
  Which one of the following mirrors is used as reflectors in torches and headlight of vehicles?
  A)
  Plane mirror                  
  done clear
  B)
  Concave mirror
  done clear
  C)
  Convex mirror   
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer35)
  Which one of the following is a cause of scarcity of water?
  A)
  Increasing population      
  done clear
  B)
  Rapid growth of industries
  done clear
  C)
  Mismanagement of water
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer36)
  The uppermost branches and leaves of tall trees, which act like a roof over the forest ground, is known as:
  A)
  Crown  
  done clear
  B)
  Canopy
  done clear
  C)
  Understory        
  done clear
  D)
  Forest floor
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer37)
  The solid matter produced during sewage treatment is:
  A)
  Slurry   
  done clear
  B)
  Humus
  done clear
  C)
  Fertilizer
  done clear
  D)
  Sludge
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer38)

  Direction: are based on the following passage.

  Silk moth is an insect which is economically important for us as it is the producer of silk. Life cycle of a silk moth is very interesting. A silk moth has four different stages in his life and in each stage it appears amazingly different. A silk moth starts its life as an egg. After about 10 days of incubation, the egg is hatched into larva called the caterpillar or silkworm. The caterpillar is voracious eater and needs a continuous supply of food (mulberry leaves). The newly hatched larva feeds continuously and grows rapidly. The next stage in the life cycle of the silk moth is pupa. When the caterpillar has grown large enough and is ready to go to the stage of pupa, it starts weaving a net around itself to hold itself. It then secrets a fibre made of protein, which hardens on exposure to air. This is the silk fibre. It covers itself completely with this fibre to form a cocoon. At this stage the larva is called pupa. The pupa grows and changes inside the cocoon. After sometime, the pupa enters into the adult stage and emerges out of the cocoon as a moth.

  What is a silk moth called when it covers itself completely with the silk fibre?

  A)
  Caterpillar         
  done clear
  B)
  Larva
  done clear
  C)
  Silkworm          
  done clear
  D)
  Pupa
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer39)

  Direction: are based on the following passage.

  Silk moth is an insect which is economically important for us as it is the producer of silk. Life cycle of a silk moth is very interesting. A silk moth has four different stages in his life and in each stage it appears amazingly different. A silk moth starts its life as an egg. After about 10 days of incubation, the egg is hatched into larva called the caterpillar or silkworm. The caterpillar is voracious eater and needs a continuous supply of food (mulberry leaves). The newly hatched larva feeds continuously and grows rapidly. The next stage in the life cycle of the silk moth is pupa. When the caterpillar has grown large enough and is ready to go to the stage of pupa, it starts weaving a net around itself to hold itself. It then secrets a fibre made of protein, which hardens on exposure to air. This is the silk fibre. It covers itself completely with this fibre to form a cocoon. At this stage the larva is called pupa. The pupa grows and changes inside the cocoon. After sometime, the pupa enters into the adult stage and emerges out of the cocoon as a moth.

  Silk fibres are obtained from the:

  A)
  Eggs                 
  done clear
  B)
  Caterpillars
  done clear
  C)
  Cocoons           
  done clear
  D)
  Adult silk moths
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer40)

  Direction: are based on the following passage.

  Silk moth is an insect which is economically important for us as it is the producer of silk. Life cycle of a silk moth is very interesting. A silk moth has four different stages in his life and in each stage it appears amazingly different. A silk moth starts its life as an egg. After about 10 days of incubation, the egg is hatched into larva called the caterpillar or silkworm. The caterpillar is voracious eater and needs a continuous supply of food (mulberry leaves). The newly hatched larva feeds continuously and grows rapidly. The next stage in the life cycle of the silk moth is pupa. When the caterpillar has grown large enough and is ready to go to the stage of pupa, it starts weaving a net around itself to hold itself. It then secrets a fibre made of protein, which hardens on exposure to air. This is the silk fibre. It covers itself completely with this fibre to form a cocoon. At this stage the larva is called pupa. The pupa grows and changes inside the cocoon. After sometime, the pupa enters into the adult stage and emerges out of the cocoon as a moth.

  Different stages of the life cycle of silk moth have been arranged correctly in which one of the following options?

  A)
  Egg\[\to \]caterpillar\[\to \]pupa\[\to \]silk moth
  done clear
  B)
  Egg\[\to \]pupa\[\to \]caterpillar\[\to \]silk moth
  done clear
  C)
  Egg\[\to \]silk moth\[\to \]caterpillar\[\to \]pupa
  done clear
  D)
  Egg\[\to \]silk moth\[\to \]pupa\[\to \]caterpillar
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow