ICSE ICSE Class 6 - CISCE Question Bank Solutions

Answer the following in short.

What do you understand by the term efficiency of a machine’?

Give a reason for the following.

The efficiency of a machine is always less than 100%.

Name the type of force which act in the following case:

A string hangs with a load.

Answer the following in detail.

Why do all objects have a tendency to fall towards the centre of the earth?

Select the correct answer

If we suspend a magnet freely, it will settle in.

What are magnetic and non-magnetic substances? Give two examples of each.

Answer the following in short.

Give two examples each of magnetic and. non-magnetic substances.

Write true or false  For the following Statement

The molecules in a substance arc in random motion.

Write true or false for the following statement

In a gas, the molecules can move anywhere in space.

Write true or false for the following statement

The liquids are less viscous than the gases.

Fill in the blank

The inter-molecular spacing is .......... in solids ........... in liquids and ............... in gases.

Fill in the blank

The molecular motion in liquid and gas is in ................. path.

Fill in the blank

In a solid, the molecules ............................................ but they remain at their fixed positions.

Fill in the blank

The inter-molecular forces are the weakest in ...............

Fill in the blank

A solid exerts pressure .....................

Fill in the blank

The gases are .......... dense.

Fill in the blank

A solid is ............ rigid.

Select the correct alternative

The solids are

Name the three states of matter.

State three characteristics of molecules of matter.