NTSE Stage-2 (National-Level) Scholastic-Aptitude & Language Comprehension: Questions 743 - 747 of 828

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Question number: 743

» Chemistry » Structure of Atom

MCQ▾

Question

The size of colloidal particles in a colloid range

Choices

Choice (4) Response

a.

108to107cmb.107to104cm

b.

105to103cmd.107to106cm

c.

None of the above

d.

Question does not provide sufficient data or is vague

Question number: 744

» Chemistry » Physical and Chemical Changes

MCQ▾

Question

On electrolysis of brine solution, the products formed are

Choices

Choice (4) Response

a.

hydrogen, chlorine and sodium hydroxide

b.

sodium hydroxide, chlorine and oxygen

c.

sodium and chlorine

d.

hydrogen, chlorine and oxygen

Question number: 745

» Biology » Soil

MCQ▾

Question

Mulching is associated with use of

Choices

Choice (4) Response

a.

soil to build barrier

b.

Trenches to collect water

c.

pilled up rocks to slow down the flow of water

d.

material to maintain soil moisture

Question number: 746

» Physics » Source of Energy

MCQ▾

Question

The site of a hydroelectric plant should be chosen carefully because it

Choices

Choice (4) Response

a.

produces a large amount of carbon mono-oxide and carbon dioxide

b.

affects the organism of region

c.

produces a large amount of electricity

d.

is expensive

Question number: 747

» Geography » Motion of the Earth

MCQ▾

Question

Which of the following best describes ‘jet streams’?

Choices

Choice (4) Response

a.

Winds blowing from the tropical high pressure belts towards the equatorial low pressure belts

b.

Wind blowing from sub-tropical high pressure belts towards the tropical low pressure belts

c.

Wind system with seas and reversal of direction

d.

Narrow meandering bands of winds which blow in mid latitude near the tropopause and encircle the globe

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