The p-Block Ele...

Which of the following element does not show inert pair effect?

In which of the following element +1 oxidation state is more stable ?

Carbon black is obtained when methane is :

Single Correct Answer Type
Consider the given sequence of reaction and identify
P and Q:
Q (Green colored)

Aqueous solution of a salt (Y) is alkaline to litmus. On strong heating, it swells-up to give a glassy material. When conc. $$H_2SO_4$$ is added to a hot concentrated solution of (Y), white crystals of a weak acid separates out. Hence, the compound (Y) is:

Among $$Al_2O_3, SiO_2, P_2O_3$$, and $$SO_2$$, the correct order of acid strength is: 

Which element exhibits both $$+1$$ and $$+3$$ oxidation numbers in its compounds?

The blue coloured mineral 'Lapis Lazuli' which is used as a semi-precious stone is a mineral of the following class:

The correct order of atomic radii of group $$13$$ elements is

The number of $$OH$$ units directly linked to boron atoms in $$Na_2B_4O_7 \cdot 10H_2O$$ are: