NSTSE (National Science Talent Search Exam- Unified Council) Class 10: Questions 1284 - 1289 of 1484

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Question 1284

Question

MCQ▾

Fuel is may be a:

I. Gas

II. Solid

III. Liquid

Which of the following is/are correct?

Choices

Choice (4)Response

a.

I and III only

b.

II and III only

c.

I, II and III only

d.

I and II only

Question 1285

Question

MCQ▾

Solar cells are made up of:

Choices

Choice (4)Response

a.

Super-conductors

b.

Conductors

c.

Insulators

d.

Semi-conductors

Question 1286

Question

MCQ▾

In nuclear reactor, control rods are good at:

Choices

Choice (4)Response

a.

Enriched Uranium

b.

Absorbing neutrons

c.

Slow down the neutrons

d.

All of the above

Question 1287

Question

MCQ▾

Which of the following composition is correct for the biogas?

Choices

Choice (4)Response

a.

b.

c.

d.

Question 1288

Question

MCQ▾

Why biogas is a better fuel than animal dung cakes?

Choices

Choice (4)Response

a.

Biogas is easy to store but animal dung cakes are inconvenient to store

b.

Biogas is a less polluting agent as compared to animal dung cakes

c.

Biogas burns smoothly but animal dung cakes do not

d.

All a., b. and c. are correct

Question 1289

Question

MCQ▾

Statement 1 – Hydrogen is cleaner fuel than CNG

Statement 2 – The burning of CNG produces carbon dioxide which leads to greenhouse effect

Choices

Choice (4)Response

a.

Statement 1 is true and statement 2 is false.

b.

Statement 1 and statement 2 are true and statement 2 is correct explanation of statement 1.

c.

Statement 1 and statement 2 are true and statement 2 is not correct explanation of statement 2.

d.

Statement 1 is false and statement 2 is true.

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