NSTSE (National Science Talent Search Exam- Unified Council) Class 9: Questions 1414 - 1419 of 2000

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Question number: 1414

» Physics » Sound

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Question

A bomb explores in the sea. An aircraft and a submarine were present vertically above and below the bomb respectively at equal distance from it at same instant. Find the ratio of the time taken by sound wave to reach them.

(Speed of sound in air , Speed of sound in sea water )

Choices

Choice (4) Response

a.

b.

4.47

c.

3.86

d.

6.21

Question number: 1415

» Biology » Diversity of Living Organisms

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Question

Which of the following best suited for mammals and birds?

Choices

Choice (4) Response

a.

They are Herbivores

b.

Are warm blooded

c.

They are carnivores

d.

All of the above

Question number: 1416

» Biology » Diversity of Living Organisms

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Question

Amoeba belongs to the phylum

Choices

Choice (4) Response

a.

Protozoa

b.

Porifera

c.

Arthropoda

d.

Annelids

Question number: 1417

» Physics » Work, Energy & Power

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Question

If a ball of mass is freely fallen from the top of a tower of height , then its kinetic energy after will be:

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 1418

» Chemistry » Atoms & Molecules

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Question

If 1 g sulphur dioxide contains x molecules, what will be the number of molecules in of methane?

Choices

Choice (4) Response

a.

molecules

b.

molecules

c.

molecules

d.

molecules

Question number: 1419

» Physics » Sound

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Question

If ripples produced in in a pond of water, then time period and the frequency of ripple formation are respectively:

Choices

Choice (4) Response

a.

b.

c.

d.

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