Mixture of `CaCN_2` and carbon called Nitrolim.
Give its one use.

Mixture of CaCN_2 and carbon called Nitrolim. How is it prepared.

What are silicons? Give one use.

Select correct statement. (i) Mixture of NH_4Cl and NaNO_2 on heating gives N_2 gas . ( ii) CFC is used as refrigerating fluid and as propellant in aerosols ( iii) Phosgene is formed when P_4 reacts with NaOH (iv) Phosgene dissolves in water forming P_2O_5

Which of the following statement is incorrect in case of anhydrous aluminium chloride (1) Fumes in moistt air due to formation of HCl gas (2) Prepared by passing dry chlorine over heated mixture of alumina and carbon (3) Being electron deficient, act as Lewis base (4) Used as catalyst in Friedel-Craft's reaction

When CaC_(2) is heated with N_(2) in an electric furnance, nitrolim is produced. Its composition is