NSTSE (National Science Talent Search Exam- Unified Council) Class 8: Questions 1885 - 1893 of 2028

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Question 1885

Question

MCQ▾

Which of the following can produce fly ash?

Choices

Choice (4)Response

a.

Natural gas

b.

Coal

c.

Petroleum

d.

All of the above

Question 1886

Question

MCQ▾

Which of the following ore is an ore of iron

Choices

Choice (4)Response

a.

Bauxite

b.

Haematite

c.

Magnetite

d.

Both b. and c. are correct

Question 1887

Question

MCQ▾

Which of the following is carcinogenic for human body?

Choices

Choice (4)Response

a.

Oxides of nitrogen

b.

c.

Lead compounds (lead)

d.

Question 1888

Question

MCQ▾

Which of the following helps to putting out the fire in soda-acid fire extinguisher?

Choices

Choice (4)Response

a.

b.

c.

d.

Question 1889

Question

MCQ▾

If the temperature falls down below to its ignition temperature, than the substance will be ________?

Choices

Choice (4)Response

a.

Dim burning

b.

Brightly burning

c.

Burning with smoke

d.

Extinguished

Question 1890

Question

MCQ▾

Which of the following coal format has highest boiling point?

Choices

Choice (4)Response

a.

Lignite

b.

Bituminous

c.

Peat

d.

Anthracite

Question 1891

Question

MCQ▾

The bottle in soda-acid extinguisher contains?

Choices

Choice (4)Response

a.

b.

c.

d.

Question 1892

Question

MCQ▾

What are A and B in the following reaction .

Choices

Choice (4)Response

a.

b.

c.

d.

Question 1893

Question

MCQ▾

Which of the following property of Tungsten metal makes it to be used in electric bulbs?

Choices

Choice (4)Response

a.

Its high density

b.

Its metallic character

c.

Its sonority

d.

Its tensile strength

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