### MCQs of p-Block Elements

Showing 1 to 10 out of 173 Questions
1.
How many groups are there in p-block element ?
 (a) 3 (b) 4 (c) 5 (d) 6
2.
What is the molecular formula of chilie salt petre ?
 (a) ${\mathrm{KNO}}_{3}$ (b) ${\mathrm{NaNO}}_{3}$ (c) $\mathrm{Ca}{\left({\mathrm{NO}}_{3}\right)}_{2}$ (d) $\mathrm{Ba}{\left({\mathrm{NO}}_{3}\right)}_{2}$
3.
For the presence of which of the following ions, ring test is useful ?
 (a) ${\mathrm{NO}}^{-}$ (b) ${{\mathrm{NO}}_{3}}^{-}$ (c) ${\mathrm{NO}}_{2}$ (d) ${\mathrm{N}}_{2}\mathrm{O}$
4.
Which of the following groups of four elements is called chalcogens ?
 (a) Nitrogen, phosphorous, arsenic and antimony (b) Oxygen, sulphur, selenium and tellurium (c) Fluorine, chlorine, bromine, iodine (d) Helium, neon, argon, kryptone
5.
Which of the following electronic configuration is the general electronic configuration of elements of group 16 ?
 (a) ${\mathrm{ns}}^{2}{\mathrm{np}}^{3}$ (b) ${\mathrm{ns}}^{2}{\mathrm{np}}^{4}$ (c) ${\mathrm{ns}}^{2}{\mathrm{np}}^{6}$ (d) ${\mathrm{ns}}^{2}{\mathrm{np}}^{5}$
6.
Which of the following oxoacids of chlorine is most stable?
 (a) ${\mathrm{HClO}}_{3}$ (b) $\mathrm{HClO}$ (c) ${\mathrm{HClO}}_{4}$ (d) ${\mathrm{HClO}}_{2}$
7.
Which of the following order with reference to stability is correct ?
 (a) $\mathrm{HF}>\mathrm{HBr}>\mathrm{HCl}>\mathrm{HI}$ (b) $\mathrm{HI}<\mathrm{HCl}<\mathrm{HBr}<\mathrm{HF}$ (c) $\mathrm{HF}>\mathrm{HCl}>\mathrm{HBr}>\mathrm{HI}$ (d) $\mathrm{HF}>\mathrm{HI}>\mathrm{HCl}>\mathrm{HBr}$
8.
Which of the following is the inter halogen compound ?
 (a) ${\mathrm{XeF}}_{4}$ (b) ${\mathrm{IF}}_{7}$ (c) $\mathrm{NaCl}$ (d) ${\mathrm{CaF}}_{2}$
9.
What is the molecular formula of oleum ?
 (a) ${\mathrm{H}}_{2}{\mathrm{SO}}_{3}$ (b) ${\mathrm{H}}_{2}{\mathrm{SO}}_{5}$ (c) ${\mathrm{H}}_{2}{\mathrm{S}}_{2}{\mathrm{O}}_{7}$ (d) ${\mathrm{H}}_{2}{\mathrm{S}}_{2}{\mathrm{O}}_{8}$
10.
In which of the following oxides of nitrogen, the oxidation state of nitrogen element is (+4) ?
 (a) ${\mathrm{N}}_{2}{\mathrm{O}}_{3}$ (b) ${\mathrm{N}}_{2}{\mathrm{O}}_{4}$ (c) ${\mathrm{N}}_{2}{\mathrm{O}}_{5}$ (d) ${\mathrm{N}}_{2}\mathrm{O}$
Showing 1 to 10 out of 173 Questions