Hydrogen may be considered as the fuel of future.

A : A finite size charged body may behave like a point charge if it produces an inverse square electric field. R : Two charged bodies may be considered as point charges if their distance of separation is very large compared to their dimensions.

Which of the following may be considered as an application of biotechnology?

Which of the blood vessel may be considered as true heart in earthworm ?

Hydrogen may be prepared in the laboratory by the action of a metal with an acid. Which of the metals copper, zinc, magnesium or sodium would be the most suitable ?

Hydrogen may be prepared in the laboratory by the action of a metal on an acid. How would you modify your apparatus to collect dry hydrogen ? Which drying agent would you employ for this purpose ?

Hydrogen may be prepared in the laboratory by the action of a metal with an acid. How would you modify your apparatus to collect dry hydrogen ? Which drying agent would you employ for this purpose ?

Assertion :- To observe the motion of planets, the sun may be assumed to be an inertial frame. Reason :- For practical purpose a frame of reference may be considered as inertial if it’s acceleration is negligible w.r.t. the acceleration of the object to be observed.

Suggest two materials other than hydrogen that can be used as fuels in fuel cells.

Suggest two materials other than hydrogen that can be used as fuels in fuel cells.

Hydrogen may be placed at the top in group ......... as well as in group ..... .... of the periodic table.