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7Class Science Changes around Us

Authored by Nomula Srinivas

Science

7th Grade

Used 208+ times

7Class Science Changes around Us
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55 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the property of iron is NOT a physical poperty?

Electrical conductivity
Magnetic property
Good conductor of heat
Reaction with moiture to get rusted

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

1. Bacteria digests animal waste and produces biogas.

2.Biogas is then burnt as fuel.

Choose the correct statement.

Bacteria digests animal waste and produces biogas is chemical change

The biogas is then burnt as fuel is chemical change

Bacteria digest animal waste and produce biogas is chemical change.

The biogas is then burnt as fuel are Chemical changes

Both statements are physical changes

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A piece of paper was cut into four pieces. What type of change occurred in the poperty of paper?

Physical change
Chemical change
Both physical and chemical changes
No answer

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Balu stretched a rubber band. What does it represent?

Physical change
Chemical change
Both physical and chemical changes
No answer

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which metal is non-corrosive?

Gold
Iron
Copper
Magnesium

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Burning of wood

Reversible change
Slow change
Periodic change
Chemical change

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Digestion of food

Reversible change
Slow change
Periodic change
Chemical change

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