National Science Olympiad Forum By SOF Olympiad Trainer

Arin from suncity, gurugram

Subject :NSO Class : Class 6

Refer to the given Venn diagram and select the correct option for X, Y and Z.

AX could be beans whereas Y could be cotton shirt.
BY could be rotten fruits whereas Z could be aluminium can.
CX could be animal excreta whereas Y could be plastic container.
DX could be used syringe whereas Z could be dead leaves.

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Yuhaan Ali from Sat Paul Mittal, LUDHIANA

Subject :NSO Class : Class 6

Select the odd one out.

A5, 10, 20, 15
B25, 50, 100, 75
C10, 20, 60, 45
D15, 30, 60, 45

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Rishik De Sarkar from Delhi Public School Gurgaon, Gurgaon

Class : Class 7

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Gaurika Bhasin from Genesis global school, Noida

Subject :NSO Class : Class 2

Which statement is INCORRECT for the animal shown in the figure?

AIt lives in hot and dry areas.
BIt eats both plants and other animals.
CIt can live without drinking water for many days.
DIt has long legs and wide feet.

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mahati from Delhi public school, Hyderabad

Class : Class 6

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Shivesht Sharma from DPS RK PURAM , Delhi

Subject :NSO Class : Class 9

If '+' is written as '×', '×' is written as '-', '÷' is written as '+' and '-' is written as '÷', then what is the value of 126 - 18 + 4 × 28 ÷ 12 ?

A26
B12
C13
D20

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Shreyansh Kanungo from Delhi Public School Bangalore East, BANGALORE

Subject :NSO Class : Class 4

Refer to the given flow chart. Which of the following is grouped INCORRECTLY?

APulses
BMargarine
CMeat
DBread

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Mohit Pradhan from BVM Global, Bollineni Hillside, Chennai

Class : Class 4

A

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Nikhita from Baldwin girls High school, bangalore

Subject :NSO Class : Class 2

Rati took a communicating vessel as shown in the figure. She filled some water in it. Which of the following correctly shows the level of water in the vessel?

A
B
C
D

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Hargun Wadhwa from Manav Rachna International School, Sector 46 Gurgaon

Class : Class 4

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S Malhotra from SFS , New Delhi

Subject :NSO Class : Class 1

Refer to the given wordgrid. Which of the following animals is NOT hidden in this grid?

AAnimal with big ears and white tusks
BBird that lays eggs in the nests of other birds
CSmall animal that lives in holes in our houses and nibbles on our clothes
DAnimal that lives on land as well as in water

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Sidhesh Prabhudesai from Arya Vidya Mandir, Mumbai

Subject :NSO Class : Class 4

Which of these machines works on the same principle as does the see-saw?

AP and Q
BQ and R
CP and R
DR and S

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Souradeepto Das Mandal from Hyderabad Public School, Hyderabad

Class : Class 6

Ans 2:

Barsan Maity from DAV School Siliguri, Siliguri

Class : Class 6

Why option c is Incorrect

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ARAVINDAN MANIKANDAN from NPS INternational, Singapore

Subject :NSO Class : Class 8

Three unknown solutions are taken in test tubes. Different indicators are added to these solutions to test their nature.

Identify the substances X, Y and Z.

	X	Y	Z
A	Soap solution	Lime water	Grape juice
B	Milk of magnesia	Lemon juice	Slaked lime
C	Salt solution	Tamarind juice	Calamine solution
D	Antacid	Sour milk	Glucose solution

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Vidhi Kothari from BVB Vidyashram, Jaipur

Class : Class 8

B

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Shivesht Sharma from DPS RK PURAM , Delhi

Subject :NSO Class : Class 9

Two particles begin to fall freely from the same height but the second falls t₀ seconds after the first. Find the time (after dropping of first) when separation between the particles is h₀.

A
B
C
Dt₀