Class-3-Science Olympiad MCQ Question and Answer
Class-3-Science Olympiad MCQ Question and Answer
61. When you touch ice, you feel how cold it is. Which system is responsible to carry this message to your brain ?
- Excretory system
- Nervous system
- Skeletal system
- Muscular system
62. 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 ?
- (ii) & (iii)
- (i) & (iv)
- (i), (iii) & (iv)
- All of these
63. 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 ?
- Sense of touch and sight
- Sense of smell and touch
- Sense of hearing and touch
- Sense of sight and hearing
64. Select the INCORRECT option.
- Helps in producing babies - Reproductive system
- Controls our actions - Nervous system
- Provides oxygen to all parts of the body - Respiratory system
- Removes wastes from the body - Excretory system.
65. Which of the following is the largest sense organ of our body ?
- Skin
- Eyes
- Ears
- Tongue
67. Bits of food sticking to the teeth causes growth of bacteria. Bacteria attack the teeth which causes tooth decay. Tooth decay causes
- Headache
- Bad Breath
- Hunger
- Itching
68. The imaginary line on which the Earth is tilted is called
- Equator
- Axis
- Cancer
- Tropic
69. I revolve around the Sun. I am first member of the solar system. I am the hottest of all other members. what am I ?
- Earth
- Mercury
- Mars
- Jupiter
70. 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.
- Lawn tennis ball
- Table tennis ball
- Basket ball
- Volley ball