National Science Olympiad Forum By SOF Olympiad Trainer

PARTH JAIN from DPS INDIRAPURAM, GHAZIABAD

Subject :NSO Class : Class 8

6 years ago

Two objects A and B are moving on rough surface as shown in figure. Object A has greater velocity than B then

A A experiences more frictional force than B
B B experiences more frictional force than A
C Both experience same frictional force
D Cannot be said because data is insufficient.

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Ans 1:

Arav Gupta from Delhi Public School Gurgaon, Gurgaon

Class : Class 8

10 months ago

Ohh I just realized nvm

Ans 2:

Arav Gupta from Delhi Public School Gurgaon, Gurgaon

Class : Class 8

10 months ago

What if the velocity is greater just by a huge amount? The frictional force is proportional to the speed

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PARTH JAIN from DPS INDIRAPURAM, GHAZIABAD

Subject :NSO Class : Class 8

6 years ago

When we walk on sand our feet sink into it and it is difficult for us to walk but a camel can easily walk on sand because
(i) The weight of the camel is the force that is spread over the large area covered by its feet.
(ii) The pressure exerted by the camel’s body on the sand is very large.

A Only (i) is correct.
B Only (ii) is correct.
C Both (i) and (ii) are correct and (ii) is the conclusion of (i).
D Both (i) and (ii) are correct and (i) is the conclusion of (ii).

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PARTH JAIN from DPS INDIRAPURAM, GHAZIABAD

Subject :NSO Class : Class 8

6 years ago

The surface area of the base of a brick X is 100 cm². The surface area of the base of the brick Y is 250 cm². Each brick weighs 100 N. Which of the following is correct if P₁ and P₂ are the pressures exerted by the bricks X and Y respectively?

A P₁ = P₂
B P₁ > P₂
C P₁ < P₂
D P₁ = P₂ = 0

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Ans 1:

Vihaan Nair from Ambassador School, DUBAI

Class : Class 8

11 months ago

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Ayush Aravindan from Unicent School Miyapur, Hyderabad

Subject :NSO Class : Class 1

6 years ago

Select the INCORRECT match.

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Ans 1:

from Phoniex ,

Class : Class 1

5 years ago

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Ayush Aravindan from Unicent School Miyapur, Hyderabad

Subject :NSO Class : Class 1

6 years ago

What does the given picture show?

A Humans need food.
B Humans breathe in air.
C Humans grow up.
D Humans need clothes.

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Ans 1:

Shreyas Gupta from CHIREC International, Hyderabad

Class : Class 8

6 years ago

C, Humans grow up

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Mahadevan from KV Rubber Board Kottayam, Kottayam

Subject :NSO Class : Class 5

6 years ago

Which of the following options is exactly embedded in Fig.(X)?

A

B

C

D

answer is wrong

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Ans 1:

shaurya from St Gregorios High school, Mumbai

Class : Class 5

5 years ago

C

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PARTH JAIN from DPS INDIRAPURAM, GHAZIABAD

Subject :NSO Class : Class 8

6 years ago

The given figure shows the petroleum deposit inside the earth’s crust.

Which of the following is correct with respect to substance X?
I. X is chiefly made up of methane.
II. X is stored under low pressure.
III. X is a clean, non-polluting fuel.

A I and III
B II and III
C I and II
D None of these

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Ans 1:

Salman Haidar from Indian School Muladha, Kerala

Class : Class 8

3 years ago

what is x

Ans 2:

ALICE from Delhi Public School, UDAIPUR

Class : Class 9

2 years ago

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PARTH JAIN from DPS INDIRAPURAM, GHAZIABAD

Subject :NSO Class : Class 8

6 years ago

In fractionating column, various fractions are obtained at various heights of the column. As the vapours reach at a height where temperature is equal to or just below the boiling point of that fraction, it will

A Condense to form a liquid
B Remain in gaseous state
C Condense to form a solid
D Escape from the column.

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Ans 1:

SIDDHI SHREYASH from Phoenix Green International School , Hyderabad

Class : Class 9

about a year ago

Ans 2:

Kabir Singh goraya from DPS , Chandigarh

Class : Class 9

2 years ago

Ans 3:

Amol Athawale from WoodRidge High, aurangabad

Class : Class 7

6 years ago

Ans 4:

KARTIK SHINDE from Delhi Public school Rau Indore , indore

Class : Class 4

2 years ago

d is the correct ans

Ans 5:

Ashmi Narkar from The Shishukunj International School, Jhalaria Campus, Indore

Class : Class 9

2 years ago

should be d rightcuz the point given for 1st also right

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PARTH JAIN from DPS INDIRAPURAM, GHAZIABAD

Subject :NSO Class : Class 8

6 years ago

Which of the following statements are correct?
(I) Coal, petroleum and natural gas are called fossil fuels.
(II) Coal and natural gas are exhaustible substances.
(III) CNG is more polluting than petrol.
(IV) Coke is used in the manufacture of steel.

A I and II only
B II and IV only
C I, III and IV only
D I, II and IV only

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Ans 1:

NAMAN HARITASH from DPS DLF CITY, GURGAON

Class : Class 9

6 years ago

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PARTH JAIN from DPS INDIRAPURAM, GHAZIABAD

Subject :NSO Class : Class 8

6 years ago

Different components of petroleum are separated by fractional distillation. What is the correct sequence of fractions obtained in the fractionating column from top to bottom?

A Petroleum gas, lubricating oil, kerosene, gasoline.
B Kerosene, petroleum gas, lubricating oil, gasoline.
C Petroleum gas, gasoline, kerosene, lubricating oil.
D Gasoline, kerosene, petroleum gas, lubricating oil.

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Ans 1:

Shaurya Verma from NPS HSR, Bangalore

Class : Class 9

4 years ago

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Ans 2:

Shaurya Verma from NPS HSR, Bangalore

Class : Class 9

4 years ago

aiurghyerigiuaergiusiuogigaisiudgiushdiughoiauhghiousfhjghjdhvjsnhgiengfivybgybyybufiftfvydrrttfbjhhjjhkhjhjhffhjghjgfjhfgjfhdjfdjrjjyrtdyrdvytrfyftvyuigdsyrgfugeuyfagdsvhcsdhgfzybdruyvjhbdjhfbuobdrouvybuybrouibviouerobvoileyarilvhjhlihlkjdfgksjhbdfhbivusdkblksdhfbvialsklngvjgldkahlkwgehliaoigaklforgilahoqoqihgiouhrqebjnkajnbuatohbue oeirjge

Ans 3:

Shaurya Verma from NPS HSR, Bangalore

Class : Class 9

4 years ago

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Ans 4:

Shaurya Verma from NPS HSR, Bangalore

Class : Class 9

4 years ago

Ans 5:

sauradeep from j v m Shyamali , ranchi

Class : Class 10

3 years ago

Ans 6:

Shaurya Verma from NPS HSR, Bangalore

Class : Class 9

4 years ago

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Ans 7:

Shaurya Verma from NPS HSR, Bangalore

Class : Class 9

4 years ago

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