NSTSE (National Science Talent Search Exam- Unified Council) Class 10: Questions 1340 - 1346 of 1484

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Question 1340

Question

MCQ▾

What are formed as a result of a chemical reaction?

Choices

Choice (4)Response

a.

Reactants

b.

Compounds

c.

Products

d.

Mixtures

Question 1341

Question

MCQ▾

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 1342

Question

MCQ▾

is … reaction?

Choices

Choice (4)Response

a.

Decomposition reaction

b.

Displacement reaction

c.

Double displacement reaction

d.

Combination reaction

Question 1343

Question

MCQ▾

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 1344

Question

MCQ▾

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 1345

Question

MCQ▾

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

Question 1346

Question

MCQ▾

What is the reason behind in adding small amount of baking soda to fresh milk?

Choices

Choice (4)Response

a.

To increase the rate of fermentation

b.

To increase its quality

c.

To make paneer

d.

To decrease the rate of fermentation

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