Acids, Bases and Salts-Natural Indicators Around Us (CBSE Class-7 Science): Questions 1 - 4 of 4

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Question number: 1

» Acids, Bases and Salts » Natural Indicators Around Us » Turmeric Natural Indicator

MCQ▾

Question

If a cooked vegetable falls on the clothes or fabric it leaves a yellow stain on cloth. This yellow stain is due to the presence of:

Choices

Choice (4) Response

a.

Indicators

b.

Bases

c.

Acids

d.

Turmeric

Question number: 2

» Acids, Bases and Salts » Natural Indicators Around Us » Acid Rain

MCQ▾

Question

Which gases from the atmosphere combines with tiny droplets of water in clouds and leads to acid rain:

Choices

Choice (4) Response

a.

Nitrogen oxide & Sulphur dioxide

b.

Carbon dioxide

c.

Sulphur dioxide

d.

Nitrogen oxide

Question number: 3

» Acids, Bases and Salts » Natural Indicators Around Us » China Rose as Indicator

MCQ▾

Question

Indicator is made using a hibiscus flower is:

Choices

Choice (4) Response

a.

China rose indicator

b.

Hibiscus indicator

c.

Flower indicator

d.

All of the above

Question number: 4

» Acids, Bases and Salts » Natural Indicators Around Us » Litmus-a Natural Dye

MCQ▾

Question

Litmus is:

Choices

Choice (4) Response

a.

Extracted from lichens

b.

Indicator

c.

A natural dye

d.

All a. , b. and c. are correct

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