CBSE Class 3 Science NSO Olympiad MCQs with Answers Set 20

LOGICAL REASONING

Question. Identify the relation between the given pair on either side of : : and find the missing figure.

Answer : D

Question. If

Answer : C

Question. Which of the following shapes is NOT present in the given figure?

A. Square
B. Triangle
C. Rectangle
D. Circle
Answer : B

Question. Which of the following belongs to Group (X)?

Answer : C

Question. Kavleen, Trishika and Sidak are standing in a line.
• Sidak is not the last.
• Kavleen is standing before Sidak.
• Trishika is not standing between Sidak and Kavleen.
Which girl is standing at the first place in the line?
A. Sidak
B. Kavleen
C. Trishika
D. Can't be determined
Answer : B

SCIENCE

Direction: Refer to the given figure of plant in which some parts are labelled and answer the questions a and b.

Question a. Which of the following plant parts take part in absorption of water and minerals, and exchange of gases respectively?

A. P and R
B. Q and S
C. T and R
D. T and P
Answer : D

Question b. Which of the following is a correct match of the plant part and an example where it is edible?
A. T- Sweet potato
B. S- Pumpkin
C. R- Sugarcane
D. P- Brinjal
Answer : A

Question. Match column I with column II and select the correct option.
        Column I                         Column II
a. Flight feathers          1. Give shape to the bird’s body
b. Down feathers          2. Help the bird to lift up from ground and provide balance
c. Body feathers           3. Keep the bird warm
A. a-1, b-2, c-3
B. a-2, b-3, c-1
C. a-3, b-2, c-1
D. a-3, b-1, c-2
Answer : B

Question. _________ does NOT have three toes in front and one at the back.

Answer : D

Question. Select the best method to preserve green peas for a longer period, without much affecting their taste.
A. Drying
B. Pickling
C. Jellying
D. Freezing
Answer : D

Question. Siddhi grouped fibres obtained from similar types of source together but she made an incorrect pair. Identify this INCORRECT pair.
A. Cotton, Jute
B. Silk, Wool
C. Nylon, Polyester
D. Silk, Nylon
Answer : D

Question. Refer to the given conversation between two friends.
Mala : My grandma lives at a place where it rains daily, whereas my aunt lives in a hot and dry place.
Shivi : Oh really! At my place the weather is cool almost the whole year and it snows a lot in winters.
Which of the following can most likely be inferred from their conversation?
A. Mala’s grandma lives in a stilt house.
B. Mala’s aunt lives in an igloo.
C. Shivi lives in a house with flat roof.
D. Shivi lives in a mud house.
Answer : A

Question. Mohit and his friends were cycling down the street to attend birthday party of Sanjay.
Suddenly one of his friends fell down and got badly hurt. He needs to see a doctor immediately.
Which of the given symbols will help Mohit to find a doctor for his friend?

Answer : A

Question. A teacher needs to show to her students that soil contains air. Which of the following should she do?
A. Pour some water into a beaker containing soil
B. Heat some soil in a pan over stove
C. Observe the soil under a microscope
D. All of these
Answer : A

Question. The group of stars that appear to form a pattern or shape in sky is called _______. Both _______ and _______ consisting of 7 main stars each, are two examples of this.
Select the option that fills the blanks in the above paragraph in correct order.
A. Constellation, Great Bear, The Hunter
B. Constellation, The Hunter, Orion
C. Satellite, Great Bear, The Hunter
D. Satellite, The Hunter, Orion
Answer : A

Question. Select the activity which will produce a different effect than the other three.
A. Fitting wheels on the bottom of a box to be dragged.
B. Putting oil on the hinges of a garage gate.
C. Tiling a cemented floor.
D. Replacing the laminated plastic board with cardboard for toy car racing.
Answer : D

Question. Sameer uses dumbbell to exercise daily. Which body systems are involved in bending and straightening of his arm?

A. Muscular and Excretory systems
B. Digestive and Nervous systems
C. Muscular and Skeletal systems
D. Skeletal and Reproductive systems
Answer : C

Question. Nidhi plotted a graph to show the amount of sound produced during the following activities P, Q and R.
Which of the following graphs would she have obtained?
P- An Aeroplane taking off
Q- Playing a piano
R- Whispering in a friend’s ear

Answer : A

Question. I am round and green. You eat me as a vegetable.
I carry a baby plant inside me.
Starting from the first letter cross out every alternate letter in the following options and select the one which gives my name.
A. ACGHLIPLOLSI
B. APFEOA
C. SLTASDTYUFRIPNRGEEMR
D. PSJPEIFNSATCUH
Answer : B

Question. _______ is an oil giving plant.

Answer : D

Question. Select the correct match out of the following.
A. Maternal grandmother’s son-Cousin
B. Cousin’s father – Uncle
C. Grandfather’s wife – Niece
D. Cousin’s daughter – Nephew
Answer : B

Question. Which of the following products do you get from the animal whose name is obtained on unscrambling the given letters?

Answer : A

Question. Select the object which does NOT belong to the first aid box.

Answer : B

Question. Which phase of Moon is shown by ‘X’ in the given figure?

A. Full
B. Gibbous
C. Crescent
D. New
Answer : B

Question. Refer to the given conversation among three friends who are going to a market.
Shruti : I want to have banana shake today. Mumma has asked me to get some bananas.
Meetu : I have to buy some tomatoes for soup.
Nidhi : My brother has cut his finger. I have to get a band-aid.
Select the correct option regarding this.
A. Shruti should go to a greengrocer.
B. Meetu should go to a greengrocer.
C. Nidhi should go to a chemist.
D. All of these.
Answer : D

Question. Which of these festivals is celebrated according to the Hindu calendar?
A. Good Friday
B. Dussehra
C. Christmas
D. Both B and C
Answer : B

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 almost equally heavy bags.
D. Both A and B
Answer : C

Question. Manuj, who is going to Kashmir for his vacations in December should preferably pack _______ in his bag.

Answer : C

Question. __________ makes our bones and muscles strong.
A. Swimming
B. Sleeping
C. Listening to music
D. Playing games like ludo
Answer : A

Question. The given diagrams show the samples of sticky tapes that were left with their sticky surfaces exposed to air from different locations X, Y and Z in a school.

From the amount of dust stuck on the sticky surfaces, which area can be considered to have greatest level of air pollution?
A. X
B. Y
C. Z
D. Cannot be determined
Answer : C

ACHIEVERS SECTION

Question. The given figure shows human digestive system with some labelled parts . Identify the part in which complete digestion of food takes place and the part from which the undigested food is thrown out of the body respectively.

A. R and P
B. Q and S
C. P and Q
D. R and S
Answer : D

Question. Select the graph that correctly shows the changes in the length of the shadow of a pole (2 metres long) during a whole day.
Key:
P- Morning
Q- Noon
R- Afternoon
S- Evening

Answer : A

Question. Refer to the given flow chart and select the correct option.

A. P can be water and T can be wooden chair.
B. Q can be fumes from incense stick and U can be newspaper.
C. R can be antiseptic liquid and S can be smoke from a vehicle.
D. P can be coconut oil and R can be sunflower oil.
Answer : C

Question. Which of the following seasons can you find in the given word grid?
A. The season when rainbows can be seen more frequently.
B. The season when we prefer to wear clothes made of fibres sourced from a mammal.
C. The season when most plants shed their leaves.
D. The season when temperatures may remain high upto 40°C.
Answer : B

Question. Select the option that correctly arranges the given planets in an ascending order of size.

A. Saturn < Jupiter < Uranus < Neptune
B. Venus< Neptune < Saturn < Jupiter
C. Earth < Mars < Saturn< Jupiter
D. Venus < Earth < Mars < Saturn
Answer : B