National Science Olympiad Forum By SOF Olympiad Trainer

ishit from EUROSCHOOL THANE, THANE WEST

Subject :NSO Class : Class 4

Read the following statements.
1. Cooking makes the food soft, tasty and easy to chew and digest.
2. Reheating food again and again restores nutrients in the food.
3. Eating junk food very often can lead to health problems.
4. Old people need food that is hard and raw.
Which of these statements is/are incorrect?

A1, 2 and 3 only
B3 and 4 only
C2 and 4 only
D3 only

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ishit from EUROSCHOOL THANE, THANE WEST

Subject :NSO Class : Class 4

The given experimental set-up was put in sunlight for a few days. Then leaves X and Y were plucked and iodine test was performed on them. What would you observe?

ALeaf X will completely turn blue black.
BLeaf Y will remain colourless.
CLeaf X will remain colourless at the part covered with dark paper.
DLeaf Y will show blue black colour on tip only.

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ishit from EUROSCHOOL THANE, THANE WEST

Subject :NSO Class : Class 4

The given table shows the sizes of 4 different kinds of paper when weighed to exactly 100 g.

(i) Which kind of paper is the thickest?
(ii) Which paper will allow the maximum light to pass through?

A(i) - Tissue paper, (ii) - Construction paper
B(i) - Tracing paper, (ii) - Waxed paper
C(i) - Waxed paper, (ii) - Tissue paper
D(i) - Construction paper, (ii) - Tracing paper

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Ans 1:

Sai Manushri from freedom international school, bangalore

Class : Class 4

Ans 2:

VANSH GARG from DPSG, GHAZIABAD

Class : Class 4

Ans 3:

Yash Kal from GP School, Mumbai

Class : Class 4

Ans 4:

Subhang Deep Sahu from Narayana CO Kadugodi Bangalore, Bangalore

Class : Class 8

Ans 5:

Ava from trio, bangalore

Class : Class 2

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Yajur Nag from dps vk, delhi

Subject :NSO Class : Class 4

Refer to the given word grid and answer the following questions.

Some uniforms are shown here. A professional who wears one of these uniforms is hidden in the word grid. Identify the one and select the correct option.

A
B
C
D

idiot

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Ans 1:

Ryan from YBIS , SINGAPORE

Class : Class 5

Ans 2:

Sovan from Salt lake ca, Kolkata

Class : Class 4

d

Ans 3:

Saipriya from Sankara, Chennai

Class : Class 9

Ans 4:

Pragnay Priyadarshi from Quantum Leap School, HYDERABAD

Class : Class 7

c

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ishit from EUROSCHOOL THANE, THANE WEST

Subject :NSO Class : Class 4

Identify the given types of feet (d, e, f) of the birds and select the correct option.

A
B
C
D

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Ans 1:

Tatiana Elena Miranda from Podar-International-School,Powai,Mumbai,C.B.S.E., Mumbai

Class : Class 4

Ans 2:

Aahana Agarwal from NPS Koramangala, Bengaluru

Class : Class 6

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ishit from EUROSCHOOL THANE, THANE WEST

Subject :NSO Class : Class 4

The given diagram shows a model, which some students have made using scrap materials to represent various parts of human digestive system. Identify these parts and select the correct statement regarding them.

AWall of Q has hair like outgrowths which are richly supplied with blood vessels.
BIn P, absorption of water takes place.
CIn R most nutrients are absorbed into the blood along with water.
DS secretes various digestive juices and helps in complete digestion of food.

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Ans 1:

Aahana Agarwal from NPS Koramangala, Bengaluru

Class : Class 6

Didn't get this one .

Ans 2:

om from jbcn, MUMBAI

Class : Class 4

Ans 3:

Shiven Dinkar from DPS Noida, Delhi

Class : Class 4

how can it happen?

Ans 4:

Soorya Tej R from Delhi Public School, Hyderabad

Class : Class 4

LARGE INTESTINE ABSORBS THE WATER NOT SMALL INTESTINE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

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ishit from EUROSCHOOL THANE, THANE WEST

Subject :NSO Class : Class 4

Refer to the given diagram. Which of the following can be X, Y and Z?

A
B
C
D

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ishit from EUROSCHOOL THANE, THANE WEST

Subject :NSO Class : Class 4

Some plants have seedpods that stick to animal fur. How is this kind of seedpod helpful to plants?

AThe seedpods get food from animal fur.
BThe seedpods are kept warm by animal fur.
CThe animal helps in the dispersal of seedpods to new areas where they can germinate.
DThe animal helps the seedpods to mix with pollen from another plant.

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