Question 1

When cleaning out your home chemicals what is the best way to avoid ground water contamination?

Accepted Answer

Disposing the chemicals properly and labelling them before dumping in the trash bin.

Answer

Throw the chemicals in the canal.

Answer

Bury the chemicals underground with care.

Answer

Dumping the chemicals down the drain.

Question 2

When do we say that the materials are useful to community?

Accepted Answer

A material is useful when it has many uses and application.

Answer

A material useful when it has many uses.

Answer

A material is useful when it is less application.

Answer

A material is useful when they are always used.

Question 3

Farmers use chemical fertilizer to increase their harvest. What are the harmful effects of this when improperly used?

Accepted Answer

It pollutes water and soil when too many chemicals are applied.

Answer

It contaminates water, air, and soil.

Answer

It makes water and air polluted.

Answer

It gives abundant harvest.

Question 4

Some vegetables or fruits have acid or bitter taste. What happens to the bitterness of thefood when mixed with substances like sugar and salt?

Accepted Answer

Some vegetables or fruits when mixed to sugar have a good taste

Answer

Sugar when mixed to some vegetables becomes sweet.

Answer

Some vegetables or fruits when mixed to sugar remain its taste.

Answer

Some vegetables or fruits when mixed with sugar will change to other taste.

Question 5

Which of the sentences below tells the difference between physical and chemical change?

Accepted Answer

Physical change is a change in size, shape, color, texture, and state while Chemical change is there is a new substance form.

Answer

Physical change is a change in size, shape, color, texture, and state however Chemical change is there is a new substance form.

Answer

Physical change is a change in size, shape, color, texture, and state and Chemical change is there is a new substance form.

Answer

Physical change is a change in size, shape, color, texture, and state but Chemical change is there is a new substance form.

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