Coal and Petroleum — Science STD 8 — Question

Name the process in which tadpoles develop into the young frogs.

Payal is completed her science chapter where she wrote some statements. She wants to know whether the statements are correct or not? Payel wants to take help from you:

The unit of calorific value of a fuel is:

Which amongst the following is a petroleum product which can be used in metalling of roads?

The process of conversion of wood into coal is called:

Voice of which of the following is likely to have minimum frequency:

If two forces act in the opposite directions on an object, the net force acting on it is the.

A parallel beam of light is incident on a converging lens parallel to its principal axis. As one moves the source of light away from the lens on its principal axis, the intensity of light.

Paheli is writing some sentences about 'algae'. In which of sentences, she is writing as incorrect?