National Science Olympiad Forum By SOF Olympiad Trainer

Kalp Jain from St Paul Sr Sec school, Mala Road, kota

Subject :NSO Class : Class 4

Which phase of Moon is shown by 'X' in the given figure?

AWaning Gibbous Moon
BWaxing Gibbous Moon
CWaning Crescent Moon
DWaxing Crescent Moon

it is waxing gibbous as per prep-guide

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Kalp Jain from St Paul Sr Sec school, Mala Road, kota

Subject :NSO Class : Class 4

Select the odd one out on the basis of mode of transport.

A
B
C
D

A is ship not train

Ans 1:

ANKIT from Kidzee, delhi

Class : Class 5

A IS THE CORRECT ANSWER AS IT IS A SHIP( WATER TRANSPORT ) AND IS ODD AS TRUCK,AUTO,BUS ARE LAND TRANSPORT. A IS NOT A TRAIN IT IS A SHIP.A SHIP. A SHIP. A SHIP!!

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Hridaan from Greenwood High, Bangalore

Subject :NSO Class : Class 4

Refer to the given food web and select the INCORRECT statement regarding it.

A ‘c’, ‘d’ and ‘e’ are primary consumers.
B ‘b’, ‘f’ and ‘g’ are carnivores.
C If we remove ‘f’ from food web then population of ‘b’ and ‘d’ will increase.
D ‘b’ is an omnivore.

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Aditri Sen from SNBP World School, Pune

Subject :NSO Class : Class 4

Identify planet X in the given sequence and select the correct option regarding it.

AIt is the fourth planet from the Sun.
BIt is also called the red planet.
CIt is an inner planet of Solar System.
DAll of these

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Anwita L Bhat from Vijaya vittala vidyashala, Mysore

Subject :NSO Class : Class 4

Refer to the given list of some diseases.

Which of the given diseases are caused by virus?

A(i), (ii), (iii), (iv) and (v) only
B(i), (iii), (iv), (vi) and (viii) only
C(i), (ii), (iv) and (viii) only
D(i), (ii), (viii), (ix) and (x) only

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LAKSH RAJ from Mothers global school, Delhi

Subject :NSO Class : Class 4

Mansi did a study on two fabrics, P and Q. At the end of her study she prepared following table about her observations. What can be the name of these two fabrics?

AFabric P-Rayon Fabric Q-Lycra
BFabric P-Cotton Fabric Q-Linen
CFabric P-Polyester Fabric Q-Silk
DFabric P-Silk Fabric Q-Cotton

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anu from Haralur, Bengaluru

Subject :NSO Class : Class 4

Refer to the given flow chart and select the correct option regarding it

AW - Hydrilla, X, Lotus
BY - Duckweed, Z - Water hyacinth
CW - Coconut, Z - Water lily
DX - Water hyacinth, Y - Wolffia

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anu from Haralur, Bengaluru

Subject :NSO Class : Class 4

The given table shows the characteristics of two groups of animals.

Which statement best explains why cats and dogs are classified as mammals and not reptiles?

AThey both lay eggs.
BTheir body temperature does not change with the environment.
CThey both have scales.
DThey both are types of pets.

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anu from Haralur, Bengaluru

Subject :NSO Class : Class 4

Which of the following telephone services can be used to call someone residing outside the country?

ACCD
BSTD
CISD
DBoth A and B

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Ans 1:

Shivaansh Nittala from Orchids the international school , Hyderabad

Class : Class 4

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anu from Haralur, Bengaluru

Subject :NSO Class : Class 4

Refer to the given table.

The haemoglobin content of a person's blood is found to be lower than normal. Which food would be most effective in helping the person to improve his condition?

AW
BY
CX
DZ

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Ans 1:

Ans 1: