National Science Olympiad Forum By SOF Olympiad Trainer

Rudrashish Chakraborty from Sudarshan Vidyamandir ICSE Academy, Bangalore

Subject :NSO Class : Class 4

In a field community, a food chain is represented as : P → Q →M →S Which one of the pie charts correctly shows the ideal proportion of the organisms in the community based on the food chain?

(A)

(B)

(C)

(D)
Here p is plant q is rabbit r is fox and s is lion. so Correct answer should be c

Ans 1:

Vimala from Narayana, Bangalore

Class : Class 4

Ans 2:

Vimala from Narayana, Bangalore

Class : Class 4

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Kalpana Dubey from R K SARDA VIDYA MANDIR, Raipur

Subject :NSO Class : Class 5

Identify the prey and predator in the following food chain and select the correct option.

	Prey	Predator
(A)	a & b	b & c
(B)	b & c	c & d
(C)	b & c	a & b
(D)	a & b	c & d.

AKSHITA DIXIT

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Kalpana Dubey from R K SARDA VIDYA MANDIR, Raipur

Subject :NSO Class : Class 5

Which of the following changes one form of energy into another?

(A)

(B)

(C)

(D)
AKSHITA DIXIT

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Kalpana Dubey from R K SARDA VIDYA MANDIR, Raipur

Subject :NSO Class : Class 5

Sumana has the following traits:

(i) Brown eyes.

(ii) Likes dancing.

(iii) Curly hair.

(iv) Attached earlobes.

(v) Able to roll her tongue.

(vi) Likes chocolate icecream.

How many traits has Sumana inherited from her parents?

(A) 2

(B) 3

(C) 4

(D) 6
akshita dixit

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Aditya B.K from Delhi Public School, Riyadh

Subject :NSO Class : Class 3

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

A56, 80
B48, 80
C56, 88
D48, 88

Pls let me know how to solve this

Ans 1: (Master Answer)

Admin from revisewise, Noida

Class : Class 1

The series has odd multiples of 8. Hence, the correct answer is C.

Ans 2:

Rayyaan Shetty from MRV Bandra West , Mumbai

Class : Class 8

Ans 3:

SHLOK NERSEKAR from OMKAR CAMBRIDGE INTERNATIONAL SCHOOL, KALYAN EAST THANE

Class : Class 4

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Shounak Goswami from Little Flower School, Jamshedpur

Subject :NSO Class : Class 7

Find the value of (2¹⁰⁰¹ - 2¹⁰⁰⁰) ÷ (2⁵⁰¹ - 2⁵⁰⁰).
(a) 2²⁰⁰⁰
(b) 2⁵⁰⁰
(c) 2¹⁰⁰⁰
(d) 2²⁰⁰

Ans 1:

P Easha from Chettinad Vidyashram, Chennai

Class : Class 7

Ans 2:

Sakshar Das from Douglas, Kolkata

Class : Class 8

Question is incorrect

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Krishiv Goyal from Ridge Valley School, Gurgaon

Subject :NSO Class : Class 5

Madhu was asked to write some rabi crops but she also wrote some kharif crops. Pick out the kharif crops written by Madhu from the following:
Wheat, Rice, Mustard, Maize, Legumes

A Wheat, mustard, legumes
B Rice, maize
C Rice, wheat
D Mustard, maize, legumes