List of top Chemistry Questions on p -Block Elements asked in KEAM

The basic character of the hydrides of 15 group elements decreases in the order:

The nitrogen oxide that does not contain N-N bond is:

The metal which dissolves in liquid ammonia to give a blue-black solution due to formation of solvated electron is

Which of the following compounds is used as refrigerant?

The shape of $ Xe{{F}_{4}} $ molecule and hybridisation of xenon in it are

Consider the following compounds 1. $(NH_4)_2Cr_2O_7$ 2. $NH_4NO_2$ 3. $NH_4 VO_3$ 4. $NH_4 NO_3$ Which compound(s) yield nitrogen gas upon heating?

$Al_2(SO_4)_3$ is used in the following but not

An inorganic salt $(A)$ is decomposed on heating to give two products $(B)$ and $(C)$. Compound $(C)$ is a liquid at room temperature and is neutral to litmus while the compound $(B)$ is a colourless neutral gas. Compounds $(A)$, $(B)$ and $(C)$ are

Choose the weak monobasic acid, among the following

Consider the following statements concerning $N_2H_4$ 1. It is an exothermic compound 2. It burns in air with the evolution of heat 3. It has kinetic stability 4. In reduces $Fe^{3+}$ to $Fe^{2+}$ in acidic medium Which of the following combination is correct?

Sea weeds are an important source of

The correct formula of borax is

The product/s formed when diborane is hydrolysed is/are

The aqueous solution/liquid that absorbs nitric oxide to a considerable extent is:

The relative strengths of trichlorides of boron group to accept a pair of electron is given by

Which hydride amongst the following has the least boiling point?

$B(OH)_3$ is a