List of top Chemistry Questions

$74.5\, g$ of a metallic chloride contain $35.5\, g$ of chlorine. The equivalent weight of the metal is
The least count of an instrument is $0.01\, cm$: Taking all precautions, the most possible error in the measurement can be:
The equivalent weight of a solid element is found to be $9$. If the specific heat of this element is $ 1.05\,J{{g}^{-1}}{{K}^{-1}}, $ then its atomic weight is:
Most electropositive metals are obtained from their ores by
Pure hydrogen is obtained by carrying electrolys is of
The hydrogen electrode is dipped in a solution of pH = 3 at 25$^\circ$C. The potential of the cell would be (the value of 2.303 RT/F is 0.059 V)
The molecule which has highest bond order is
Oxygen molecule is paramagnetic in nature. What is the paramagnetic content in terms of magnetic moment in $O^{-}_{2}$?
The conditions for the combination of atomic orbitals to form molecular orbitals are stated below. Mark the incorrect condition mentioned here.
The electronic configuration of carbon is $1s^2 2s^2 2p^2$. There are $12$ electrons in $C_2$. The correct electronic configuration of $C_2$ molecule is
The increasing order of energies of various molecular orbitals of $N_2$ is given below: $\sigma 1s < \sigma^* 1s
Which contain at least one e- in $\sigma 2p$ bonding MO
$SF_6$ exists but $OF_6$ does not because
$ C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}OH $ and $ {{H}_{3}}CC{{H}_{2}}OC{{H}_{3}} $ are:
Number of stereoisomers of lactic add is
$0.92 \,g$ of an organic compound was analysed by combustion method. The mass of the $U$-tube increased by $1.08 \,g$. What is the percentage of hydrogen in the compound?
Consider the following carbocations : I. $Cl_3 \overset{+}C$ II. $Cl_{2} \overset{+} {C}H$ III. $Cl \overset{+} {C}H_{2}$ IV. $ \overset{+} {C}H_{3}$ The stability sequence follows the order
$1$-Butene and cyclobutane show
59 g of an amide obtained from a carboxylic acid, RCOOH, upon heating with alkali liberated 17 g of ammonia. The acid is
A compound with molecular formula $C_4H_4O$ has all the four carbon atoms and the oxygen atom inthe ring. It also has two double bonds. The compound is
A gas is found to have the formula (CO)$^n$. If its vapour density is 56, the value of n will be
A mixture of acetone (b.p. 56$^\circ$) and methanol (b.p. 65$^\circ$) can be separated by
A mixture of benzoic acid and naphthalene can be separated by crystallization from
A mixture of two immiscible liquids may be easily separated by using a
An example of alicyclic compound is