Chemical Reactions and Equation-Oxidation Reactions (CBSE (Central Board of Secondary Education- Board Exam) Class-10 Science): Questions 9 - 13 of 13

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Question number: 9

» Chemical Reactions and Equation » Oxidation Reactions » Corrosion

Essay Question▾

Describe in Detail

Write a note on process of corrosion?

Explanation

Corrosion is the process by which metals are eaten away layer by layer, by the action of air, moisture or chemicals on their surface.

Iron when exposed to moist air for a long time acquires a coating of a brown flaky substance called rust.

Silver articles become black after some

… (90 more words) …

Question number: 10

» Chemical Reactions and Equation » Oxidation Reactions » Corrosion

Short Answer Question▾

Write in Short

What is the process of corrosion?

Question number: 11

» Chemical Reactions and Equation » Oxidation Reactions » Corrosion

MCQ▾

Question

Slow destruction of metal due to their interaction with the environment is called as:

Choices

Choice (4) Response

a.

Decomposition

b.

Precipitation

c.

Rancidity

d.

Corrosion

Question number: 12

» Chemical Reactions and Equation » Oxidation Reactions » Rancidity

MCQ▾

Question

The smell and taste of oil-containing food materials becomes bad after sometime:

Choices

Choice (4) Response

a.

Due to rancidity

b.

Due to degradation of oil/fat

c.

Oxidative chemical degradation of oils

d.

All a. , b. and c. are correct

Question number: 13

» Chemical Reactions and Equation » Oxidation Reactions » Corrosion

MCQ▾

Question

Corrosion needs:

Choices

Choice (4) Response

a.

Oxygen

b.

Electrolytes in water

c.

Both a. and b. are correct

d.

None of the above

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