National Science Olympiad Forum By SOF Olympiad Trainer

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

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

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:

aayushi anand from AIR FORCE SCHOOL HASIMARA, HASIMARA

Class : Class 4

C

Ans 2:

Rishav Kundu from DAV Public School Midnapore , Medinipur

Class : Class 2

Ans d

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

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Ans 1: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

Ans 2:

UMA Subramanian from Global Indian International School, Singapore

Class : Class 7

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Karmanya Gupta from DPS, Udaipur

Subject :NSO Class : Class 6

Which of the following is a warm-blooded animal ?

A
B
C
D

WHAT IS NAME OF ANIMAL DRAWN IN OPTION A AND B.

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john from allen institute, Rajkot

Subject :NSO Class : Class 8

When some liquid evaporates, the average speed of the molecules remaining will ____.

(A) Increase because the more energetic molecules have left

(B) Decrease because the more energetic molecules have left

(C) Remain unchanged because all molecules have about the same speed

(D) Increase because there are fewer molecules

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Ans 1:

Albin from Indian School al Buraimi , Buraimi

Class : Class 8

Ans 2:

john from allen institute, Rajkot

Class : Class 8

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Arnav Yadav from Delhi Public School Rohini ,New Delhi, New Delhi

Subject :NSO Class : Class 3

What will be the weight of object X on Moon if it weighs 36 kg on Earth?

A36 kg
B216 kg
C6 kg
D10 kg

PLEASE MAKE ME UNDERSTAND WHY

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Ans 1:

Vidita from Manav Rachna international school sector 51 Gurugram, Gurgaon

Class : Class 5

I don't get it?

Ans 2:

Arnav Yadav from Delhi Public School Rohini ,New Delhi, New Delhi

Class : Class 6

PLESE MAKE ME UNDERSTAND

Ans 3:

reena yadav from dps haridwar, haridwar

Class : Class 3

please make me understand

Ans 4:

Arnav Yadav from Delhi Public School Rohini ,New Delhi, New Delhi

Class : Class 6

Ans 5:

Arnav Yadav from Delhi Public School Rohini ,New Delhi, New Delhi

Class : Class 6

Ans 6:

ANSHUL GAJJAR from PODAR INTERNATIONAL SCHOOL, AHMEDABAD

Class : Class 3

C

Ans 7:

Karangat house from Navy Children School, Payyannur

Class : Class 3

6 kg . because wheight is 1/6 on moon

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Arnav Yadav from Delhi Public School Rohini ,New Delhi, New Delhi

Subject :NSO Class : Class 3

The given box contains some materials.

Which of these materials are bad conductors of heat?

A1 and 2 only
B2 and 3 only
C3 and 4 only
D2, 3 and 4 only

TRICKY ONE

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Ans 1:

k tagore from montessori school, KURNOOL

Class : Class 3

glass are bad conducters of heat

Ans 2:

ANSHUL GAJJAR from PODAR INTERNATIONAL SCHOOL, AHMEDABAD

Class : Class 3

c

Ans 3:

k tagore from montessori school, KURNOOL

Class : Class 3

Ans 4:

Mohi from Vibgyor, Bangalore

Class : Class 6

A. Wood and Glass

Ans 5:

k tagore from montessori school, KURNOOL

Class : Class 3

Ans 6:

Nishant Hazarika from Air Force School, Dibrugarh

Class : Class 3

Wood is a good conductor of heat as it can burn easily

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