$H_2SO_4$ acts as a dehydrating agent in its reaction with:

Identify the correct composition of water gas from the following.

The hydrides of which group elements of the periodic table form electron-precise hydrides?

Which of the following orders is incorrect?

Hydrogen has three isotopes $(A)$,$(B)$ and $(C)$. If the number of neutron$(s)$ in $(A)$,$(B)$ and $(C)$ respectively,are $(x)$,$(y)$ and $(z)$,the sum of $(x)$,$(y)$ and $(z)$ is:

Lithium hydride can be used to prepare other useful hydrides. Beryllium hydride is one of them. Suggest a route for the preparation of beryllium hydride starting from lithium hydride. Write chemical equations involved in the process.