National Science Olympiad Forum By SOF Olympiad Trainer

PARTH JAIN from DPS INDIRAPURAM, GHAZIABAD

Subject :NSO Class : Class 8

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

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

Ans 2:

Arav Gupta from Delhi Public School Gurgaon, Gurgaon

Class : Class 8

Ohh I just realized nvm

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PARTH JAIN from DPS INDIRAPURAM, GHAZIABAD

Subject :NSO Class : Class 8

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

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

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Ayush Aravindan from Unicent School Miyapur, Hyderabad

Subject :NSO Class : Class 1

Select the INCORRECT match.

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Ans 1:

from Phoniex ,

Class : Class 1

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Ayush Aravindan from Unicent School Miyapur, Hyderabad

Subject :NSO Class : Class 1

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

C, Humans grow up

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Mahadevan from KV Rubber Board Kottayam, Kottayam

Subject :NSO Class : Class 5

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

C

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PARTH JAIN from DPS INDIRAPURAM, GHAZIABAD

Subject :NSO Class : Class 8

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:

ALICE from Delhi Public School, UDAIPUR

Class : Class 9

Ans 2:

Salman Haidar from Indian School Muladha, Kerala

Class : Class 8

what is x

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PARTH JAIN from DPS INDIRAPURAM, GHAZIABAD

Subject :NSO Class : Class 8

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:

Amol Athawale from WoodRidge High, aurangabad

Class : Class 7

Ans 2:

SIDDHI SHREYASH from Phoenix Green International School , Hyderabad

Class : Class 8

Ans 3:

KARTIK SHINDE from Delhi Public school Rau Indore , indore

Class : Class 4

d is the correct ans

Ans 4:

Kabir Singh goraya from DPS , Chandigarh

Class : Class 9

Ans 5:

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

Class : Class 9

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

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

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PARTH JAIN from DPS INDIRAPURAM, GHAZIABAD

Subject :NSO Class : Class 8

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:

sauradeep from j v m Shyamali , ranchi

Class : Class 10

Ans 2:

Shaurya Verma from NPS HSR, Bangalore

Class : Class 9

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Ans 3:

Shaurya Verma from NPS HSR, Bangalore

Class : Class 9

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Ans 4:

Shaurya Verma from NPS HSR, Bangalore

Class : Class 9

Ans 5:

Shaurya Verma from NPS HSR, Bangalore

Class : Class 9

Ans 6:

Shaurya Verma from NPS HSR, Bangalore

Class : Class 9

io4weauhgapertnherjaperoingjnpnaraeuroingjnpnaraeurngnrehfyyti7t7t t. yut io4weauhgapertnherjaperoingjnpnaraeuroingjnpnaraeurngnrehfyyti7t7t t. yut io4weauhgapertnherjaperoingjnpnaraeuroingjnpnaraeurngnrehfyyti7t7t t. yut io4weauhgapertnherjaperoingjnpnaraeuroingjnpnaraeurngnrehfyyti7t7t t. yut io4weauhgapertnherjaperoingjnpnaraeuroingjnpnaraeurngnrehfyyti7t7t t. yut io4weauhgapertnherjaperoingjnpnaraeuroingjnpnaraeurngnrehfyyti7t7t t. yut io4weauhgapertnherjaperoingjnpnaraeuroingjnpnaraeurngnrehfyyti7t7t t. yut io4weauhgapertnherjaperoingjnpnaraeuroingjnpnaraeurngnrehfyyti7t7t t. yut io4weauhgapertnherjaperoingjnpnaraeuroingjnpnaraeurngnrehfyyti7t7t t. yut io4weauhgapertnherjaperoingjnpnaraeuroingjnpnaraeurngnrehfyyti7t7t t. yut io4weauhgapertnherjaperoingjnpnaraeuroingjnpnaraeurngnrehfyyti7t7t t. yut io4weauhgapertnherjaperoingjnpnaraeuroingjnpnaraeurngnrehfyyti7t7t t. yut io4weauhgapertnherjaperoingjnpnaraeuroingjnpnaraeurngnrehfyyti7t7t t. yut io4weauhgapertnherjaperoingjnpnaraeuio4weauhgapertnherjaperoingjnpnaraeuroingjnpnaraeurngnrehfyyti7t7t t. yut io4weauhgapertnherjaperoingjnpnaraeuroingjnpnaraeurngnrehfyyti7t7t t. yut io4weauhgapertnherjaperoingjnpnaraeuroingjnpnaraeurngnrehfyyti7t7t t. yut io4weauhgapertnherjaperoingjnpnaraeuroingjnpnaraeurngnrehfyyti7t7t t. yut io4weauhgapertnherjaperoingjnpnaraeuroingjnpnaraeurngnrehfyyti7t7t t. yut io4weauhgapertnherjaperoingjnpnaraeuroingjnpnaraeurngnrehfyyti7t7t t. yut io4weauhgapertnherjaperoingjnpnaraeuroingjnpnaraeurngnrehfyyti7t7t t. yut io4weauhgapertnherjaperoingjnpnaraeuroingjnpnaraeurngnrehfyyti7t7t t. yut io4weauhgapertnherjaperoingjnpnaraeuroingjnpnaraeurngnrehfyyti7t7t t. yut io4weauhgapertnherjaperoingjnpnaraeuroingjnpnaraeurngnrehfyyti7t7t t. yut io4weauhgapertnherjaperoingjnpnaraeuroingjnpnaraeurngnrehfyyti7t7t t. yut io4weauhgapertnherjaperoingjnpnaraeuroingjnpnaraeurngnrehfyyti7t7t t. yut io4weauhgapertnherjaperoingjnpnaraeuroingjnpnaraeurngnrehfyyti7t7t t. yut io4weauhgapertnherjaperoingjnpnaraeuio4weauhgapertnherjaperoingjnpnaraeuroingjnpnaraeurngnrehfyyti7t7t t. yut io4weauhgapertnherjaperoingjnpnaraeuroingjnpnaraeurngnrehfyyti7t7t t. yut io4weauhgapertnherjaperoingjnpnaraeuroingjnpnaraeurngnrehfyyti7t7t t. yut io4weauhgapertnherjaperoingjnpnaraeuroingjnpnaraeurngnrehfyyti7t7t t. yut io4weauhgapertnherjaperoingjnpnaraeuroingjnpnaraeurngnrehfyyti7t7t t. yut io4weauhgapertnherjaperoingjnpnaraeuroingjnpnaraeurngnrehfyyti7t7t t. yut io4weauhgapertnherjaperoingjnpnaraeuroingjnpnaraeurngnrehfyyti7t7t t. yut io4weauhgapertnherjaperoingjnpnaraeuroingjnpnaraeurngnrehfyyti7t7t t. yut io4weauhgapertnherjaperoingjnpnaraeuroingjnpnaraeurngnrehfyyti7t7t t. yut io4weauhgapertnherjaperoingjnpnaraeuroingjnpnaraeurngnrehfyyti7t7t t. yut io4weauhgapertnherjaperoingjnpnaraeuroingjnpnaraeurngnrehfyyti7t7t t. yut io4weauhgapertnherjaperoingjnpnaraeuroingjnpnaraeurngnrehfyyti7t7t t. yut io4weauhgapertnherjaperoingjnpnaraeuroingjnpnaraeurngnrehfyyti7t7t t. yut io4weauhgapertnherjaperoingjnpnaraeu

Ans 7:

Shaurya Verma from NPS HSR, Bangalore

Class : Class 9

aiurghyerigiuaergiusiuogigaisiudgiushdiughoiauhghiousfhjghjdhvjsnhgiengfivybgybyybufiftfvydrrttfbjhhjjhkhjhjhffhjghjgfjhfgjfhdjfdjrjjyrtdyrdvytrfyftvyuigdsyrgfugeuyfagdsvhcsdhgfzybdruyvjhbdjhfbuobdrouvybuybrouibviouerobvoileyarilvhjhlihlkjdfgksjhbdfhbivusdkblksdhfbvialsklngvjgldkahlkwgehliaoigaklforgilahoqoqihgiouhrqebjnkajnbuatohbue oeirjge

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