Chemistry [NSTSE (National Science Talent Search Exam- Unified Council) Class 8]: Questions 60 - 66 of 209

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Question 60

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Question

MCQ▾

Biogas is a mixture of?

Choices

Choice (4)Response

a.

b.

c.

d.

Question 61

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Question

MCQ▾

Metals can be made into thin sheets. This property is termed as?

Choices

Choice (4)Response

a.

Ductility

b.

Strength

c.

Malleability

d.

Density

Question 62

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Question

MCQ▾

Which of the following non-metal is liquid at room temperature?

Choices

Choice (4)Response

a.

Hydrogen

b.

Nitrogen

c.

Bromine

d.

Chlorine

Question 63

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Question

MCQ▾

Which of the following type of fuel will give smoke and ash on combustion?

Choices

Choice (4)Response

a.

Solid fuels

b.

Liquid fuels

c.

Gaseous fuels

d.

Question does not provide sufficient data or is vague

Question 64

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Question

MCQ▾

When we observe LPG (Cooking gas) flame the “blue zone” indicates?

Choices

Choice (4)Response

a.

Un burn vapours

b.

Moderately hot

c.

Complete Combustion

d.

Partial decomposition

Question 65

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Question

MCQ▾

Prevention of metal corrosion can done, when contact between metal and ________ in cut-off?

Choices

Choice (4)Response

a.

Hydrogen

b.

Carbon

c.

Oxygen

d.

Nitrogen

Question 66

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Question

MCQ▾

The slurry residue after obtaining biogas is used as?

Choices

Choice (4)Response

a.

Insecticide

b.

Pesticide

c.

Manure

d.

Question does not provide sufficient data or is vague