Acids, Bases and Salts-How Strong Are Acid or Base Solutions? [CBSE (Central Board of Secondary Education) Class-10 (Term 1 & 2 MCQ) Science]: Questions 12 - 20 of 20

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Question 12

Describe in Detail Subjective▾

Write a detailed note on indicators and pH scale.

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Explanation

A scale for measuring hydrogen ion concentration in a solution, called pH scale has been developed. The p in pH stands for ‘potenz’ in German, meaning power. So P = power and H = hydrogen ions.

Indicators – Indicators are substances which indicate the acidic or basic nature of the solution by their colour or odour change. Olfactory indicators are ra…

… (187 more words, 10 figures) …

Question 13

Write in Brief One Liner▾

What is mechanism of indication of acid and base indicators?

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Question 14

Write in Brief One Liner▾

What is the normal pH of human blood?

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Question 15

Write in Short Short Answer▾

Write a note on pH scale.

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Question 16

Write in Short Short Answer▾

What are olfactory indicators?

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Question 17

Question MCQ▾

Role played by in human digestive system:

Choices

Choice (4)Response

a.

Permits selective detection, identification and isolation of certain substances

b.

Help in digestion of food

c.

Enzyme function effectively only at certain

d.

Both b. and c. are correct

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Question 18

Question MCQ▾

of a solution means:

Choices

Choice (4)Response

a.

Negative logarithm of hydrogen ion concentration

b.

Strength of acidity of a solution

c.

Both a. and b. are correct

d.

None of the above

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Question 19

Question MCQ▾

The change in causes:

Choices

Choice (4)Response

a.

Tooth decay

b.

Less growth of plants

c.

Both a. and b. are correct

d.

Question does not provide sufficient data or is vague

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Question 20

Question MCQ▾

in everyday life is:

Choices

Choice (4)Response

a.

Self- defence by animals

b.

Self- defence by plants

c.

Animal and plants are sensitive

d.

All a., b. and c. are correct

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