SSLC (English Medium) कक्षा ६ - Tamil Nadu Board of Secondary Education Question Bank Solutions for Science

Give the main difference between a pure substance and an impure substance.

Connect with sports Air is not a pure substance. It helps us in many ways from breathing to playing. Balloon sports are a very popular sport. Hot air is lighter than cool air. So, the balloons filled with hot air rise up. Find out more about hot air balloons.

We should include fruits and vegetables in our diet, because_______.

Calcium is an example for

Iron helps in the formation of haemoglobin.

Solids ______ on heating and ______ on cooling.

Thermal expansion is always a nuisance.

Borosilicate glass do not expand much on being heated.

Give reason for the following

An ordinary glass bottle cracks when boiling water is poured into it, but a borosilicate glass bottle does not.

What is thermal expansion?

What difference do you think heating the solid will make in their molecules?

Explain thermal expansion with suitable examples.

If you heat a circular disk with a hole, what change do you expect in the diameter of the hole? Remember that the effect of heating increases the separation between any pair of particles.

The combination of two or more cells is called a ______.

To make a battery of two cells, the negative terminal of one cell is connected to the negative terminal of the other cell.

Choose the symbol for battery

Circle the odd one out. Give a reason for your choice.

Switch, Bulb, Battery, Generator.

Match the following

sl.no.	Symbol	Description
1.		open key
2.		cell
3.	open	bulb glows
4.		battery
5.		bulb does not glow

When there is no pond or lake in an area, will there be formation of clouds possible in that area?

Plants grown for decorative purposes are called as softwood.