NSTSE (National Science Talent Search Exam- Unified Council) Class 9: Questions 1974 - 1979 of 2000

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Question number: 1974

» Chemistry » The Nature of Matter

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Question

An emulsifier is a substance which?

Choices

Choice (4) Response

a.

Purifies the emulsion

b.

Helps in the dispersion of liquid in liquid

c.

Stabilises the emulsion

d.

Coagulator the emulsion

Question number: 1975

» Chemistry » Matter

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Question

Which of the following statement is false?

Choices

Choice (4) Response

a.

All forms of matter have mass

b.

Matter can be living or non-living

c.

All forms of matter have same colour

d.

All forms of matter have volume

Question number: 1976

» Chemistry » Atoms & Molecules

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Question

Generally sulphur molecule exists as if you have of sulphur, then calculate moles present in it?

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 1977

» Chemistry » Atoms & Molecules

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Question

of hydrocarbon on combustion with of oxygen produce of and of . The data illustrate the law of?

Choices

Choice (4) Response

a.

Conservation of mass

b.

Reciprocal proportions

c.

Multiple proportions

d.

Constant proportions

Question number: 1978

» Chemistry » The Nature of Matter

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Question

Which of the following process is used to separate colloidal particles from crystalloids?

Choices

Choice (4) Response

a.

Dialysis

b.

Peptization

c.

Pyrolysis

d.

Photolysis

Question number: 1979

» Biology » Improvement in Food Resources

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Question

Gm crops stand for

Choices

Choice (4) Response

a.

Gold medal crops

b.

Growth maturity crops

c.

Genetically modified crops

d.

Growth monitors crops

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