NSTSE (National Science Talent Search Exam- Unified Council) Class 10: Questions 1339 - 1345 of 1484

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Question number: 1339

» Chemistry » Chemical Reactions and Equations

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MCQ▾

Question

Which of the following chemical equation is not balanced?

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 1340

» Chemistry » Chemical Reactions and Equations

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MCQ▾

Question

What are formed as a result of a chemical reaction?

Choices

Choice (4) Response

a.

Reactants

b.

Compounds

c.

Products

d.

Mixtures

Question number: 1341

» Chemistry » Chemical Reactions and Equations

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MCQ▾

Question

The reaction in which an atom or group of atoms present in a molecule displaced by another atom?

Choices

Choice (4) Response

a.

Decomposition reaction

b.

Synthesis

c.

Displacement reaction

d.

Double displacement reaction

Question number: 1342

» Chemistry » Chemical Reactions and Equations

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MCQ▾

Question

is………………. . reaction?

Choices

Choice (4) Response

a.

Decomposition reaction

b.

Displacement reaction

c.

Double displacement reaction

d.

Combination reaction

Question number: 1343

» Chemistry » Periodic Classification of Elements

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MCQ▾

Question

The ionic radius of a cation is always……

Choices

Choice (4) Response

a.

more than atomic radius

b.

equal to atomic radius

c.

less than atomic radius

d.

cannot to predicted

Question number: 1344

» Chemistry » Periodic Classification of Elements

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MCQ▾

Question

In a period of periodic table, Metallic character decreases and the basic nature of their oxides……. . ?

Choices

Choice (4) Response

a.

Increases

b.

Does not change

c.

Decreases

d.

None of the above

Question number: 1345

» Chemistry » Chemical Reactions and Equations

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MCQ▾

Question

The phenomenon of formation of by the oxidation of is known as.

Choices

Choice (4) Response

a.

Auto reduction

b.

Auto oxidation

c.

Redox reaction

d.

All of the above

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