National Science Olympiad Forum By SOF Olympiad Trainer

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

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:

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

Class : Class 9

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

Ans 2:

KARTIK SHINDE from Delhi Public school Rau Indore , indore

Class : Class 4

d is the correct ans

Ans 3:

SIDDHI SHREYASH from Phoenix Green International School , Hyderabad

Class : Class 8

Ans 4:

Amol Athawale from WoodRidge High, aurangabad

Class : Class 7

Ans 5:

Kabir Singh goraya from DPS , Chandigarh

Class : Class 9

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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.

View All Answers (7)

Ans 1:

Shaurya Verma from NPS HSR, Bangalore

Class : Class 9

Ans 2:

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 3:

Shaurya Verma from NPS HSR, Bangalore

Class : Class 9

aiurghyerigiuaergiusiuogigaisiudgiushdiughoiauhghiousfhjghjdhvjsnhgiengfivybgybyybufiftfvydrrttfbjhhjjhkhjhjhffhjghjgfjhfgjfhdjfdjrjjyrtdyrdvytrfyftvyuigdsyrgfugeuyfagdsvhcsdhgfzybdruyvjhbdjhfbuobdrouvybuybrouibviouerobvoileyarilvhjhlihlkjdfgksjhbdfhbivusdkblksdhfbvialsklngvjgldkahlkwgehliaoigaklforgilahoqoqihgiouhrqebjnkajnbuatohbue oeirjge

Ans 4:

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 io4weauhgapertnherjaperoingjnpnaraeu

Ans 5:

Shaurya Verma from NPS HSR, Bangalore

Class : Class 9

Ans 6:

sauradeep from j v m Shyamali , ranchi

Class : Class 10

Ans 7:

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 io4weauhgapertnherjaperoingjnpnaraeu

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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

View All Answers (3)

Ans 1:

Bhagyesh Kamal from DPS, Mumbai

Class : Class 8

Ans 2:

Bhagyesh Kamal from DPS, Mumbai

Class : Class 8

Ans 3:

Pranav from JSS Public School, Bengaluru

Class : Class 10

The right answer is Option A

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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 7

Ans 2:

subh from Delhi public School, BOKARO STEEL CITY

Class : Class 8

ans 3

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PARTH JAIN from DPS INDIRAPURAM, GHAZIABAD

Subject :NSO Class : Class 8

Study the given flowchart carefully.

Which of the following statements is correct?

A X can be condensed back to coal.
B Y and Z are useless products.
C Z starts burning when exposed to air.
D None of these

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PARTH JAIN from DPS INDIRAPURAM, GHAZIABAD

Subject :NSO Class : Class 8

Which of the following applications of plastics show(s) that plastics are bad conductors of electricity?
I. Refrigerators have an insulating wool of plastics.
II. Electric wires have a plastic coating.
III. Chemicals are stored in plastic containers.
IV. Parachutes are made from plastics.

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

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