CBSE Class 3 Science NSO Olympiad MCQs with Answers Set P

LOGICAL REASONING

Question. In the figure, there are ______ possible combinations of 1 boy and 2 girls.

A. 10
B. 12
C. 8
D. 6
Answer : B

Question. Select the correct mirror image of Figure (X) along the mirror MN.

Answer : B

Question. Which of the following words is not embedded in the Figure (X)?

A. ON
B. TO
C. QO
D. OK
Answer : C

Question. If 'Pen' is written as 'Eraser', 'Eraser' is written as 'Book' and 'Book' is written as 'Watch', then _______ is used to erase anything written wrong.
A. Pen
B. Eraser
C. Book
D. Watch
Answer : C

Question. Find the odd one out.

Answer : B

Question. There is a certain relationship between fig. (i) and (ii). Establish the same relationship between fig. (iii) and (iv) by selecting a figure from the given options which will replace the (?) in fig. (iv).

Answer : B

Question. Find the missing numbers, if a certain rule is followed in the figure.

A. 56, 80
B. 48, 80
C. 56, 88
D. 48, 88
Answer : C

Question. Miss Jindal is taking an English test. T he time (in mins) taken by each student is given below.

Who will finish the test first and who will be last respectively?
A. Kavita, Komal
B. Tanu, Kavita
C. Amit, Zarrin
D. Priya, Komal
Answer : B

Question. Select the figure from the given options which will complete the pattern in Fig. (X).

Answer : D

Question. Count the number of straight lines in the given figure.

A. 20
B. 21
C. 22
D. 23
Answer : B

SCIENCE

Question. Shreya is a food lover. Her plate is always filled with a variety of foods. Refer to the given figure, and identify the type of food that is missing in Shreya's plate.

A. Energy-giving food
B. Body-building food
C. Protective food
D. None of the above
Answer : D

Question. The given picture shows foot of a bird. Which of the birds given below can have this type of foot?

A. Crow
B. Rooster
C. Woodpecker
D. Duck
Answer : C

Question. Namita was stirring a spoonful of sugar into a glass of water. Initially, she could see the grains of sugar swirling around, but after a few seconds, she could not see the sugar anymore.
What could be the reason for this?
A. The sugar evaporated.
B. The sugar got dissolved.
C. The sugar sank into the bottom.
D. The sugar turned into water.
Answer : B

Question. It is not a good habit for children to wear ‘X’ type of footwear as they can spoil the shape of the feet, and can also cause back pain. Which of these is ‘X’ type of footwears?

Answer : D

Question. Why should freshwater be conserved and used wisely?
1. Its store is limited in nature. 2. We have plenty of freshwater.
3. Only river has freshwater.
4. We cannot use salty water for drinking, instead of freshwater.
5. We can use sea water, instead of freshwater.
A. 1, 3 and 5
B. 2 and 4
C. 1, 2 and 5
D. 1 and 4
Answer : D

Question. Megha and Harsha are non-siblings who have common great grandparents but not common grandparents. T hey are _______ .
A. First cousins
B. Second cousins
C. Step-cousins
D. None of these
Answer : B

Question. Which of the following actions do not require a twisting force?
A. Spinning a coin
B. Pulling the rope in the tug of war
C. Turning the water tap on
D. Opening a water bottle
Answer : D

Question. Lizard is an example of group X and frog is an example of group Y. What is the common feature of the animals of groups X and Y?
A. All of them are herbivores.
B. All of them lay eggs.
C. None of them have four legs.
D. None of them can survive in water.
Answer : C

Direction : Read the following passage and answer Q. No. a and b. 
Beena placed a potted plant near the window in a dark room as shown in Fig. 1 and noted the direction in which the plant was growing.
After few days she rotated the pot in the position as shown in Fig. 2.

Question a. What would be her observation after few days?
A. The plant began to grow towards left i.e., against the direction of sunlight.
B. The plant again bent to the right i.e. towards sunlight.
C. The plant died.
D. None of these
Answer : C

Question b. What does the above experiment prove?
A. Plants grow away from sunlight.
B. Plants die in sunlight.
C. Plants grow towards sunlight.
D. Plants grow in the presence of air.
Answer : D

Question. Refer to the given pictures of a heron and a kingfisher. Both have similar long, sharp pointed beaks, but their feet are quite different. What does it suggest?

A. They eat similar kind of food.
B. They live in different habitats.
C. Their hunting methods are different.
D. All of these
Answer : D

Question. Read the given statement.
'X' is the only organ system which comprises of a different set of organs in male and female individuals.
Which of the following is X?
A. Respiratory system
B. Circulatory system
C. Reproductive system
D. Digestive system
Answer : A

Question. Which of the following statements are true for the Republic Day?
1. On 26th January 1947, India became a Republic.
2. India got a constitution– a set of rules on the day.
3. On Republic Day, a parade is taken out on the Rajpath, in New Delhi.
4. The Prime Minister hoists the National flag at Red Fort, in O ld Delhi.
A. 1, 2 and 3
B. 2 and 3
C. 2, 3 and 4
D. 1, 2, 3 and 4
Answer : A

Question. Richa was spinning a top. She wondered if the Earth is compared to the top, then _______ of the Earth can be compared to X. Select the correct option to fill up the blank.

A. North Pole 
B. South Pole
C. Axis
D. Equator
Answer : D

Question. Match the column I with column II and select the correct option.
              Column I                                    Column II
p. A rock put out under sun               1. Changes into solid
q. Coconut oil put in freezer              2. Changes into liquid
r. Water put on burning stove            3. Changes into gas
s. Ice cream kept on a table              4. No change
A. p-1, q-2, r-3, s-4
B. p-3, q-2, r-4, s-1
C. p-4, q-1, r-3, s-2
D. p-4, q-1, r-2, s-3
Answer : C

Question. Two means of transport (1 and 2) are given below. Identify them and select the correct option regarding 1 and 2.

A. 1 is a crane, which runs on land.
B. 2 is a parachute, which flies in air.
C. 1 is a firetruck, which runs on land.
D. 2 is a glider, which dives in water.
Answer : C

Question. Ashu’s pet was hit by a car on road and got injured. T o whom should Ashu rush to get first aid for his pet?
A. Carpenter
B. Astronaut
C. Physician
D. Veterinarian
Answer : D

Question. Harsh, Niketan and Shubh were making a craft project together. For the project, Harsh bought one kilogram of marbles, Niketan bought one kilogram of glitter particles and Shubh bought one kilogram of feathers. Select the correct option based on this data.
A. Harsh's bag will be the heaviest among them.
B. Shubh's bag will be the lightest among them.
C. All of them will have the equally heavy bags.
D. Both A and B
Answer : A

Question. A piece of metal is not a source of light because it does not ___________.
A. Shine brightly
B. Give off its own light
C. Have a shiny surface
D. Allow light to pass through
Answer : B

Question. According to the weather forecast marked in July calender given below, which of these should be worn on 3rd July 20XX?

A. Raincoat
B. Woollen socks
C. Silk scarf
D. Leather jacket
Answer : D

ACHIEVERS SECTION

Question. Four school friends went on a jungle safari. Next day, they narrated what they saw in the jungle to their other friends.

Which of the above four friends was/were lying?
A. Hari and Shaurya
B. Shaurya and Varsha
C. Varsha and Hiral
D. Varsha only
Answer : C

Question. When astronauts are out in the space, either they communicate using radios or talk to one another by touching their helmets. Which of the following statements holds true about communication in space?
1. Sound is a vibration that cannot travel through vacuum.
2. Sound vibrations can travel through the material of the helmet to the other.
3. Radiowaves can travel through vacuum.
4. Helmets have speakers built in them which produce sounds when touched.
A. 4 only
B. 2 and 3
C. 1, 2 and 3
D. 1 and 4
Answer : C

Question. The different shapes of the Moon are shown in the given figures. Identify the shape of the Moon when:
1. the Moon is between the Earth and Sun.
2. the side of the Moon facing the Earth is fully illuminated by the Sun.

Answer : C

Question. The following activities involve the use of different forces.
1. Squeezing a balloon to change its shape and size.
2. Stopping a pram that is moving towards you.
3. Stretching a rubber band to change its length.
4. Dragging a toy car.
Identify the force involved in the activities mentioned above.

Answer : B

Question. The table below shows the property of materials S, T and U

A burning candle is placed behind sheets made of either S, T and U. In which of the given options will Kumar be able to see the candle's flame most clearly?

Answer : A