NSTSE (National Science Talent Search Exam- Unified Council) Class 9: Questions 1941 - 1948 of 2000

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Question number: 1941

» Chemistry » Matter

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Question

Select the metal from the following, which is not a solid at room temperature?

Choices

Choice (4) Response

a.

Mercury

b.

Aluminium

c.

Iron

d.

Steel

Question number: 1942

» Chemistry » The Nature of Matter

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MCQ▾

Question

________Forms colloidal solution in water?

Choices

Choice (4) Response

a.

Starch

b.

Salt

c.

Glucose

d.

Barium nitrate

Question number: 1943

» Chemistry » Structure of the Atom

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MCQ▾

Question

Sodium ion is isoelectronic with?

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 1944

» Chemistry » Structure of the Atom

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MCQ▾

Question

Assume that an element has electrons, protons and neutrons, then what is the mass number of the element?

Choices

Choice (4) Response

a.

10

b.

12

c.

22

d.

32

Question number: 1945

» Chemistry » The Nature of Matter

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MCQ▾

Question

Which one of the following process is known to be a chemical change?

Choices

Choice (4) Response

a.

Evaporation of water

b.

Boiling of eggs

c.

Precipitation of snow

d.

Melting of wax

Question number: 1946

» Chemistry » Structure of the Atom

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MCQ▾

Question

Which of the following are the same for the given set of elements and ?

Choices

Choice (4) Response

a.

Number of protons

b.

Number of electrons

c.

Number of nucleons

d.

Number of neutrons

Question number: 1947

» Chemistry » Structure of the Atom

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MCQ▾

Question

Which of the following is isoelectronic with neon?

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 1948

» Chemistry » Matter

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MCQ▾

Question

Convert to kelvin, the value is (or) the resulting temperature in kelvin is

Choices

Choice (4) Response

a.

b.

c.

d.

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