National Science Olympiad Forum By SOF Olympiad Trainer

svayumbhu sharma from jodhamal public school, jammu

Subject :NSO Class : Class 8

Which of the following statements is/are correct?
I. Natural fibres burn to form a residue on heating.
II. Wool and silk burn with smell of burning hair.
III. Silk being a natural fibre absorbs less water than nylon.
IV. Natural fibres are moth resistant.
V. Synthetic fibres maintain a permanent crease and do not get crumpled.

AI and V only
BI, II and V only
CII, III and IV only
DII and V only

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Ans 1:

arav agrawal from kaanger valley academy, Raipur

Class : Class 9

Ans 2:

Agastya Tripathi from dps gurgaon, Gurgaon

Class : Class 4

Silk burns with a smell of charred meat

Ans 3:

Aadya from NPS, chennai

Class : Class 9

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Ainesh das from Chrysalis, Bangalore

Subject :NSO Class : Class 4

Refer to the given Venn diagram and select the option that correctly identifies animals P, Q, R and S.

	P	Q	R	S
A	Platypus	Krait	Crocodile	Salamander
B	Porcupine	Stork	Spadefoot toad	Housefly
C	Cassowary	Caiman	Arowana	Viper
D	Ladybird	Rhea	Flamingo	Shrew

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Ans 1:

AHANA BAG from DELHI PUBLIC SCHOOL JOKA SOUTH KOLKATA, KOLKATA

Class : Class 9

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Jayanth from The Deens Academy, Bengaluru

Subject :NSO Class : Class 4

Some food items were tested with iodine. All were tested negative except _______ .

A Potato
B Eggs
C Chicken
D Prawn

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Ans 1:

aayushi anand from AIR FORCE SCHOOL HASIMARA, HASIMARA

Class : Class 4

D

Ans 2:

Abeer Mashru from Harvest International, Bangalore

Class : Class 5

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vikas agrawal from J B PUBLIC SCHOOL, PUNE

Subject :NSO Class : Class 5

The given figure shows various parts of the human digestive system which are labelled as d, e, f, g and h. Following are the functions of some of those parts:
1. Mixing of food with digestive juices.
2. Absorption of nutrients from food.
3. Absorption of water from undigested food.
Select the option that correctly matches the function with the labelled part of the digestive system.

	1	2	3
A	d	e	h
B	e	f	g
C	d	g	h
D	e	g	f

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Ans 1:

Payoja Moharana from National Public School, Whitefileld, , Bangalore

Class : Class 5

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from ,

Subject :NSO Class : Class 4

Roots of these plants do not get air under the soil, hence these plants develop special roots that grow above the soil and are called as breathing roots. In what kind of regions, such plants are expected to grow?

A Deserts
B Forests
C Mountains
D Marshes

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Ans 1:

Rishav Kundu from DAV Public School Midnapore , Medinipur

Class : Class 2

Ans d

Ans 2:

aayushi anand from AIR FORCE SCHOOL HASIMARA, HASIMARA

Class : Class 4

C

Ans 3:

Ashwak from Cambridge, Jalandhar

Class : Class 9

The answer is D

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arun from ST. Francis high school ,sarni, sarni

Subject :NSO Class : Class 5

P and Q are two distant places on earth located at about 125 kms distance. Which of the following assumptions can be made about these places?

AThe temperature at a particular time will be higher at place P than that at place Q.
BAir current will flow from place P to Q.
CIt is afternoon at place Q while evening at place P.
DNone of these assumptions can be made.

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SOHAM MUKHERJEE from SOUTH POINT SCHOOL, KOLKATA

Subject :NSO Class : Class 5

Shweta wanted to find out the volumes of three objects, P, Q and R. She put them into a beaker of water in different combinations as shown below.

Which of the following bar graphs correctly shows the volume of the three objects?

A
B
C
D