NTSE Stage-1 (State-Level) Scholastic-Aptitude & Language Comprehension: Questions 632 - 636 of 1042

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Question number: 632

» Biology » Soil

MCQ▾

Question

Certain bacteria living in the soil poor in oxygen convert nitrates into nitrites and then to free nitrogen and such bacteria are termed as

Choices

Choice (4) Response

a.

denitrifying bacteria

b.

nitrogen fixing bacteria

c.

saprophytic bacteria

d.

ammonifying bacteria

Question number: 633

» Physics » Sound

MCQ▾

Question

Doppler effect is depend on

Choices

Choice (4) Response

a.

velocity of listener

b.

distance between source and listener

c.

velocity of source

d.

All of the above

Question number: 634

» Chemistry » Structure of Atom

MCQ▾

Question

Consider the flowing statements

I. On moving from left to right in period atomic radii increases.

II. On moving from left to right in period atomic radii decreases. Which of the above statement (s) is/are correct?

Choices

Choice (4) Response

a.

Only II

b.

I and II

c.

Only I

d.

None of the above

Question number: 635

» Physics » Motion and Force

MCQ▾

Question

Bubbles of gas, escaping from the mud at the bottom of a deep lake, rise to the surface. As the bubbles rise, the bubble gets larger. Why is this?

A deep lake full of mud escaping bubbles of gas

A Deep Lake Full of Mud Escaping Bubbles of Gas

Find the reason of bubble getting larger when it rise

Choices

Choice (4) Response

a.

Water pressure on the bubbles increases

b.

Water pressure on the bubbles decreases

c.

Atmospheric pressure on the bubbles decreases

d.

Atmospheric pressure on the bubbles increases

Question number: 636

» Mathematics » Mensuration

MCQ▾

Question

A vessel is in the form of an inverted cone. Its height is 8 cm and radius of its top which is open is 5 cm. It is filled with water up to the rim. When lead shots each of which is a sphere of radius 0.5 cm, are dropped into the vessel, one-fourth of water flows out. The number of lead shots dropped into the vessel.

Choices

Choice (4) Response

a.

85

b.

50

c.

100

d.

75

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