CBSE Class-7 Science: Questions 29 - 33 of 322

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Question number: 29

» Heat » Measuring Temperature » Laboratory Thermometer

MCQ▾

Question

The reason that we cannot use laboratory thermometer to measure the body temperature is:

Choices

Choice (4) Response

a.

Because range of ordinary laboratory thermometer is 100 C.

b.

Because laboratory thermometer has long thick walled capillary tube

c.

Because level of mercury drops as soon as the thermometer is taken out of the liquid

d.

None of the above

Question number: 30

» Nutrition in Animals » Digestion in Human Beings » Milk Teeth and Permanent Teeth

MCQ▾

Question

Sets of teeth Human beings have during their lifetime are:

Choices

Choice (4) Response

a.

One sets

b.

Regenerative teeth

c.

Two sets

d.

Three sets

Question number: 31

» Physical and Chemical Changes » Chemical Changes » Chemical Reactions and Its Examples

MCQ▾

Question

Chemical reactions taking place in a chemical changes are:

Choices

Choice (4) Response

a.

Double displacement reactions

AND

Decomposition reactions

b.

Direct combination or synthesis reaction

c.

Displacement reactions

d.

All a. , b. and c. are correct

Question number: 32

» 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: 33

» Nutrition in Animals » Digestion in Human Beings » Human Digestive System and Its Organs

MCQ▾

Question

The digestive tract or alimentary canal of human digestive system is divided into different components these are:

Choices

Choice (4) Response

a.

Mouth, Buccal-cavity, Oesophagus, stomach, small

b.

Buccal- cavity, oesophagus, stomach, small intestine, large intestine, anus

c.

Oesophagus, Mouth, Stomach, Intestine

d.

Buccal- cavity, oesophagus, stomach, small intestine, large intestine

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