Sulphuric Acid — Chemistry STD 10 — Question

The number of electron shells around the nucleus of an atom represents its________(period/group)

Complete the following:
When the nuclei of two different reacting atoms are of ……………… mass, then a bond so formed is called ……………… covalent band (Equal, unequal, polar, non-polar).

Covalent bond is rigid and directional, it is responsible for __________.

In general, non-metals are __________ electronegative than metals.

Conc. sulphuric acid is used in the laboratory preparation of nitric acid, as sulphuric acid is ________. [most volatile/least volatile]

Fill in the blanks:
During the concentration of bauxite ore, aluminium goes in ………. (soluble/insoluble) part because of its …………(acidic/basic/amphoteric) nature.

Down the group, electron affinity ____________. (increases, decreases) 

The root in the IUPAC name of an organic compound depends upon the number of carbon atoms in _____________ .(any chain, principal chain)

Coordinate bond is also called __________bond.

Mass of 22.4 litre of a gas at STP is __________.