Class-3-Science Olympiad Questions and Answers

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Q61
When you touch ice, you feel how cold it is. Which system is responsible to carry this message to your brain ?
  • A Excretory system
  • B Nervous system
  • C Skeletal system
  • D Muscular system
Answer: Option B
Q62
Study the following list of actions (i) Reading a storybook. (ii) Enjoying music over the radio. (iii) Answering the telephone when it rings. (iv) Watching an interesting documentary on the television. Which of the above actions does a blind person unable to do ?
  • A (ii) & (iii)
  • B (i) & (iv)
  • C (i), (iii) & (iv)
  • D All of these
Answer: Option B
Q63
Your baby sister is sleeping in your room. You are reading a book at your study table. Your baby sister wakes up and lets out a cry. Which of your senses help you to know that your baby sister is crying ?
  • A Sense of touch and sight
  • B Sense of smell and touch
  • C Sense of hearing and touch
  • D Sense of sight and hearing
Answer: Option D
Q64
Select the INCORRECT option.
  • A Helps in producing babies - Reproductive system
  • B Controls our actions - Nervous system
  • C Provides oxygen to all parts of the body - Respiratory system
  • D Removes wastes from the body - Excretory system.
Answer: Option C
Q65
Which of the following is the largest sense organ of our body ?
  • A Skin
  • B Eyes
  • C Ears
  • D Tongue
Answer: Option A
Q66
The number of milk teeth in a baby are
  • A 10
  • B 15
  • C 20
  • D None of these
Answer: Option D
Q67
Bits of food sticking to the teeth causes growth of bacteria. Bacteria attack the teeth which causes tooth decay. Tooth decay causes
  • A Headache
  • B Bad Breath
  • C Hunger
  • D Itching
Answer: Option B
Q68
The imaginary line on which the Earth is tilted is called
  • A Equator
  • B Axis
  • C Cancer
  • D Tropic
Answer: Option B
Q69
I revolve around the Sun. I am first member of the solar system. I am the hottest of all other members. what am I ?
  • A Earth
  • B Mercury
  • C Mars
  • D Jupiter
Answer: Option B
Q70
You are making a model of the Earth and Moon to show their relative sizes and massiveness. If you take cricket ball as an Earth, then ______ can be taken as moon.
  • A Lawn tennis ball
  • B Table tennis ball
  • C Basket ball
  • D Volley ball
Answer: Option B

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