CBSE Class-7 Science: Questions 96 - 102 of 322

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Question number: 96

» Physical and Chemical Changes » Chemical Changes » Rusting

MCQ▾

Question

The process of slowly eating away of a metal on exposure to air and moisture is called as:

Choices

Choice (4) Response

a.

Rusting

b.

Rust

c.

Crystallization

d.

None of the above

Question number: 97

» Heat » Kinds of Clothes We Wear in Summer & Winter » Light Colored Clothes

MCQ▾

Question

Kinds of clothes we wear in summers are:

Choices

Choice (4) Response

a.

Light coloured

b.

Dark coloured

c.

Question does not provide sufficient data or is vague

d.

None of the above

Question number: 98

» Physical and Chemical Changes » Rusting of Iron » Galvanisation

MCQ▾

Question

The process in which a layer of zinc or chromium is deposited over the iron sheets is called as:

Choices

Choice (4) Response

a.

Alloying

b.

Crystallization

c.

Galvanization

d.

Question does not provide sufficient data or is vague

Question number: 99

» Nutrition in Animals » Mouth and Buccal Cavity » Saliva and Its Function

MCQ▾

Question

Functions of saliva are:

Choices

Choice (4) Response

a.

Lubrication of food

b.

Digestion of starch

c.

Helps in swallowing of food

d.

All a. , b. and c. are correct

Question number: 100

» Nutrition in Animals » The Food Pipe & Stomach » Small Intestine

MCQ▾

Question

A large cream coloured gland located just below the stomach is called as:

Choices

Choice (4) Response

a.

Pancreas

b.

Gall bladder

c.

Liver

d.

Question does not provide sufficient data or is vague

Question number: 101

» Weather, Climate and Adaptations of Animals to Climate » Climate » Components of Climate

MCQ▾

Question

Factors on which the climate of a region depends are:

Choices

Choice (4) Response

a.

Distance from the equator and sea

AND

Humidity and rainfall

b.

Height above sea level

c.

Temperature direction of winds and sun

d.

All a. , b. and c. are correct

Question number: 102

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

MCQ▾

Question

Chemical changes are:

Choices

Choice (4) Response

a.

Involves a chemical reaction

b.

Changes in which one or more new substances are formed

c.

Irreversible

d.

All a. , b. and c. are correct

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