Acids, Bases and Salts-Acids and Bases (CBSE Class-7 Science): Questions 1 - 7 of 7

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Question number: 1

» Acids, Bases and Salts » Acids and Bases » Bases

MCQ▾

Question

Bases are:

Choices

Choice (4) Response

a.

Soapy to touch

b.

Bitter in taste

c.

Dissociated in aqueous solution to give hydroxide ion

d.

All a. , b. and c. are correct

Question number: 2

» Acids, Bases and Salts » Acids and Bases » Indicators

MCQ▾

Question

Substances, which are used to test whether a substance is acidic or basic, are called as:

Choices

Choice (4) Response

a.

Cation

b.

Indicators

c.

Anions

d.

Litmus

Question number: 3

» Acids, Bases and Salts » Acids and Bases » Indicators

MCQ▾

Question

Turmeric, litmus, China rose petals are:

Choices

Choice (4) Response

a.

Chemical indicators

b.

Natural indicators

c.

Indicators

d.

Question does not provide sufficient data or is vague

Question number: 4

» Acids, Bases and Salts » Acids and Bases » Acids

MCQ▾

Question

Commonly used acids in laboratory are called as:

Choices

Choice (4) Response

a.

Milk of magnesia

b.

Mineral acid

c.

Indicators

d.

All of the above

Question number: 5

» Acids, Bases and Salts » Acids and Bases » Acids

MCQ▾

Question

Acids are:

Choices

Choice (4) Response

a.

Turns blue litmus red

b.

Sour to taste

c.

Both a. and b. are correct

d.

None of the above

Question number: 6

» Acids, Bases and Salts » Acids and Bases » Acids

MCQ▾

Question

Acids, which are obtained from natural organic matters, are called as:

Choices

Choice (4) Response

a.

Organic acids

b.

Indicators

c.

Mineral acids

d.

None of the above

Question number: 7

» Acids, Bases and Salts » Acids and Bases » Bases

MCQ▾

Question

Bases that dissolve in water are called as:

Choices

Choice (4) Response

a.

Weak bases

b.

Alkalis

c.

Strong bases

d.

None of the above

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