NSTSE (National Science Talent Search Exam- Unified Council) Class 8: Questions 1865 - 1870 of 2028

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Question 1865

Question

MCQ▾

Which of the following metal did not give any reaction with Hydrochloric acid (HCl) ?

Choices

Choice (4)Response

a.

Iron –

b.

Aluminium -

c.

Silver –

d.

Magnesium –

Question 1866

Question

MCQ▾

Which of the following will be produced if non-metals combine with oxygen?

Choices

Choice (4)Response

a.

Basic oxide

b.

Amphoteric oxide

c.

Acidic oxides

d.

Question does not provide sufficient data or is vague

Question 1867

Question

MCQ▾

The process “cracking” related to?

Choices

Choice (4)Response

a.

Petroleum

b.

Hydrocarbons

c.

Coke

d.

Coal

Question 1868

Question

MCQ▾

When oil well is drilled through rocks, which of the following comes out first?

Choices

Choice (4)Response

a.

Gas carbon

b.

Coal gas

c.

Natural gas

d.

Harsh gas

Question 1869

Question

MCQ▾

When you take a burning wood and you poured water over that burning wood, the fire of wood goes off, because?

Choices

Choice (4)Response

a.

The flame vapourises

b.

Decrease in temperature of wood

c.

Water molecules reacts with oxygen present in that flame.

d.

Temperature of water goes-up

Question 1870

Question

MCQ▾

To which of the following category does the elements Arsenic and Antimony belongs?

Choices

Choice (4)Response

a.

Metalloids

b.

Minerals

c.

Metals

d.

Non-metals

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