National Science Olympiad Forum By SOF Olympiad Trainer

Advik Goudar from National Public School Banashankari, Bengaluru

Subject :NSO Class : Class 3

Study the given food web and select the correct option for the following questions.

If the population of an organism F decreases, then population of which organisms would likely to increase?

A D and E
B G only
C A and B
D B and C

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Ans 1:

Aanya Garg from bombay scottish school , Mumbai

Class : Class 4

i dont understand the question

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Advik Goudar from National Public School Banashankari, Bengaluru

Subject :NSO Class : Class 3

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

Which of the following cannot be found in the given word grid?

A A plant with heart-shaped leaves.
B A plant with prop roots.
C A fruit that has few seeds.
D A plant whose leaves are edible.

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Arnav Singh from Saint Paul, Rourkela

Subject :NSO Class : Class 9

The diagram shows a wooden block of mass 10 kg pushed up a rough inclined plane at a constant speed by a force of 50 N. When the block travels from X to Y, it reaches a height of 5 m and travels a distance of 13 m along the plane, then what is the work done against friction?

A650 J
B600 J
C250 J
D150 J

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Ans 1:

Samarth Ramesh Hivarkar from Ladkat school of foundation , Baramati

Class : Class 9

Give explanation

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ADVAY Rustagi from Vidyashilp Academy , Bengaluru

Subject :NSO Class : Class 5

Study the given flow chart and select the correct option regarding it.

A d-Humming bird, e-Spear-shaped
B e-Cracker, f-Hooked
C f-Cracker, g-Swan
D d-Peacock, g-Hawk

yo c

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Ans 1:

Soham Kishor Hujband from Delhi Public School, Nashik

Class : Class 5

Answer is d

Ans 2:

ADVAY Rustagi from Vidyashilp Academy , Bengaluru

Class : Class 5

c

Ans 3:

ADVAY Rustagi from Vidyashilp Academy , Bengaluru

Class : Class 5

jk

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Ishanvi Bikram from delhi public school, bokaro steel city

Subject :NSO Class : Class 6

Two temperature scales P and Q are related by P − 42/110 = Q - 72/220. At which temperature two scales have the same reading?

A – 42°
B –72°
C +12°
D – 40°

question is wrong

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Ans 1:

Rudrani from Chrysalis High, Bangalore

Class : Class 6

The answer is 12

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Vihan Kumbhar from Podar International School Satara , Satara

Subject :NSO Class : Class 6

Refer to the given Venn diagram.

Identify P, and Q, and select the correct statement regarding them.

A P is a simple carbohydrate while Q is a complex carbohydrate.
B Both P and Q are soluble in water.
C Both P and Q will give positive test with Benedict’s solution.
D Both (B) and (C)

THIS WAS A CONFUSING QUESTION

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Atharva from Royal Global School, Guwahati

Subject :NSO Class : Class 6

Refer to the given flow chart and select the correct statement regarding it.

ADeficiency of P could cause kwashiorkor in children.
BDeficiency of both P and Q could cause marasmus in children.
CDeficiency of R could cause diarrhoea.
DDeficiency of both Q and R could cause rickets in children.

DELL COMPUTER

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Shridatree from GMGS, Kolkata

Subject :NSO Class : Class 6

If you are standing in the middle of a cross road with a compass and the red portion of the compass needle is pointing towards you, then to go towards East then you should turn

A Right and then go straight
B Left and then go straight
C Right and then go left
D Left and then go right.

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Arjun Khairnar from ,

Subject :NSO Class : Class 6

Ananya observed three different soil samples and drew some conclusions regarding the locations from which these soil samples were collected.
Soil 1: It is dark brown in colour and is rich in organic matter with some earthworms. It also contains small roots of plants.
Soil 2: It appears brown to grey in color and is rich in small pieces of debris and gravel with very little organic matter. It has gritty texture.
Soil 3: It is light brown. It is less granular with some visible plants. It also contains some tiny rocks and debris.
Which of the following conclusions are incorrect regarding soil samples? incorrect regarding soil samples?

A Soil 1 could be from a garden as it is rich in organic matter, with some plant roots and earthworms.
B Soil 2 could be from roadside area as it contains gravel and has gritty texture.
C Soil 3 could be from open ground or playground as it shows tiny rocks and pebbles with some plants.
D Soil 2 could be from a desert area as it shows presence of gravel.

c is the correct answer