List of top Chemistry Questions

Nylon $6,6$ is obtained by condensation polymerisation of

Nylon-6 as compared to nylon 6, 6 has lower

Number of nucleons in $D_2$ molecule is

Number of moles of $K_2Cr_2O_7$ reduced by one mole of $Sn^{2+}$ ions is

Number of atoms in 558.5 g of Fe (At. mass of Fe= 55.85 g $mol^{_1}$) is

Number of electrons surrounding $Kr \, in \, KrF_2 \, is$

Number of angular nodes for $4d$ orbital is _________.

Noble gases are sparingly soluble in water due to

Noble gases are also known as aerogens because

Nitrogen is used to fill electric bulbs because

Nitrogen forms stable $N_2$ molecule but phosphorus is converted to $P_4$ from $P_2$ because

Nitrogen combines with metals to form

Nitrobenzene can be prepared from benzene by using a mixture of conc. $ {HNO_3}$ and conc. $ {H_2SO_4}$ in the mixture, nitric acid acts as a/an :

Nitric oxide acts as a reducing agent in the reaction

Nickel is purified by thermal decomposition of its

$NH_4OH$ is a weak base but it becomes still weakerin the aqueous solution of

$NH_3$ has a much higher b.p. than $PH_3$ because

$NH_3$ and $BF_3$ form adduct readily because they form

Negative soil pollution is soil that is with

Natural rubber is which type of polymer ?

Natural sources of air pollution are

Name the products of the following reactions. (I) $C_6H_6$ reacts with methyl chloride in presence of $AlCl_3$. (II) $C_6H_6$ reacts with acetyl chloride in presence of $AlCl_3$. (III) $C_6H_6$ reacts with fuming nitric acid in presence of cone. $H_2SO_4$. (IV) $C_6H_6$ is catalytically hydrogenated.

Name the process used for purification of white bauxite ore containing no iron oxide as impurity

Name an element of p-block of the periodic tablein which last electron goes to the s-orbital ofvalence shell instead of p-orbitals

Na(Sodium) reacts water water more vigorously than Li(Lithium) because