List of top Chemistry Questions

How many gram-equivalents of $ NaOH $ are required to neutralise $ 25 \,cm^3 $ of a decinormal $ HCl $ solution?
The orbital frequency of an electron in the hydrogen atom is proportional to
Keto-enol tautomerism is not observed in
The molecule which has zero dipole moment is
Treatment of acetaldehyde with ethyl magnesium bromide and subsequent hydrolysis gives
Among the following, the formula of saturated fatty acid is
The correct order of dehydration of alcohols is
The units of rate constant for first order reaction are
Which is not an example of common ion effect?
Peroxide ion ___________ a) is diamagnetic b) has five completely filled antibonding molecular orbitals c) is isoelectronic with neon d) has bond order one. Which one of these is correct?
The rate constant for a first order reaction is $60 \,s^{-1}$. How much time it will take to reduce the concentration of the reactant to $1 / 10^\text{ th}$ of its initial value?
The equivalent weight of $H _{3} PO _{2}$, when it disproportionates into $PH _{3}$ and $H _{3} PO _{3}$ is
Oxidation state of $Fe$ in $Fe ( CO )_{5}$ is zero. $EAN$ of $Fe$ in this complex is $36$.
$CO+ H_2\xrightarrow[X(catalyst)]{300^\circ C/300\, atm} CH_3OH$ The catalyst $X$ is
Ionisation energy of $He^+$ is $19.6 \times 10^{-18}\, J\, atom^{-1}$. The energy of the first stationary state $(n = 1)$ of $Li^{2+}$ is
The potential of a hydrogen electrode at $pH = 10$ is
Which of the following is an outer orbital complex ?

Which of the following is known as oil of vitriol ?

The function of copper-\(T\) is to prevent
The strongest base among the following is
Which of the following structures represents neoprene polymer?
Which of the following has highest ionization enthalpy?
Which of the following has the highest electron affinity?
A spontaneous reaction is impossible if.
Identify Z in the sequence $ C{{H}_{3}}COON{{H}_{4}}\xrightarrow{\Delta }X\xrightarrow[\Delta ]{{{P}_{2}}{{O}_{5}}}Y\xrightarrow{{{H}_{2}}O/{{H}^{+}}}Z $