Questions

Silappadikaram is one of The Five Great Epics of Tamil Literature. Epic revolves around Kannagi, who having lost her husband to a miscarriage of justice at the court of the Pandyan Dynasty, wreaks her revenge on his kingdom.

The sun moves around and in the house, but cannot touch the house.

The objects through which light cannot pass are called as Opaque objects. Some objects allow some light to pass through them and are called as Translucent objects. The objects which allow all the light to pass through them are called as Transparent objects.

Here in the given options Book is an example of opaque object as it does not allow light to pass through it. Water is transparent object and notebook paper and sun glasses are examples of translucent objects.

The air around us is a mixture of gases, mainly nitrogen and oxygen, but containing much smaller amounts of water and other gases.

Earth's atmosphere is composed of many gases. Their percentages by volume is given by::

 
78% Nitrogen,

21% Oxygen,

0.9% Argon, and

0.03% Carbon dioxide 

And very small percentages of other elements.

The two main products of photosynthesis are sugar and oxygen. Oxygen is emitted as waste product and sugar is used for energy preparation using sun light.

Laterite soils are a tropical soil and possess a great amount of iron and aluminum. Due to its high iron oxide content they look like rusty-red coloration.