National Science Olympiad Forum By SOF Olympiad Trainer

Ayush Aravindan from Unicent School Miyapur, Hyderabad

Subject :NSO Class : Class 1

Select the INCORRECT match.

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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.

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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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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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 8

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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 8

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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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PARTH JAIN from DPS INDIRAPURAM, GHAZIABAD

Subject :NSO Class : Class 8

Coal tar can be used as a starting material for manufacturing
(i) Drugs
(ii) Photographic materials
(iii) Cookwares
(iv) Explosives

A Only (i)
B (ii) and (iv)
C (i), (ii) and (iv)
D (ii), (iii) and (iv)

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PARTH JAIN from DPS INDIRAPURAM, GHAZIABAD

Subject :NSO Class : Class 8

Observe the figure of destructive distillation of coal. What are the three fractions X, Y and Z?

	X	Y	Z
A	Coal gas	Coal tar	Coke
B	Coal gas	Coke	Coal
C	Coal gas	Coal tar	Impure coal
D	Carbon dioxide	Coal tar	Coal

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Ans 1:

Bhagyesh Kamal from DPS, Mumbai

Class : Class 8

Ans 2:

Bhagyesh Kamal from DPS, Mumbai

Class : Class 8

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PARTH JAIN from DPS INDIRAPURAM, GHAZIABAD

Subject :NSO Class : Class 8

Which of the following represents an incorrect match?

A Coal gas – Methane + Hydrogen
B LPG – Propane + Butane
C Producer gas – Carbon + Nitrogen
D CNG – Compressed methane

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Ans 1:

Amol Athawale from WoodRidge High, aurangabad

Class : Class 8

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