List of top Chemistry Questions

Ethyl butyrate has the flavour of which fruit ?
The $ IUPAC $ name of crotonaldehyde is
The ionisation constant of ammonium hydroxide is $ 1.77 \times 10^{-5} $ at $298\, K.$ Hydrolysis constant of ammonium chloride is
Which alcohol of molecular formula $ C_4H_9OH $ cannot be obtained by the reduction of carbonyl compound ?
Cannizaro?s reaction is not given by
The ionization energy of the electron in the hydrogen atom in its ground state is $13.6\, eV.$ The atoms are excited to higher energy levels to emit radiations of $6$ wavelengths. Maximum wavelength of emitted radiation corresponds to the transition between
Stachyose is a
Polyethylene glycol method is used for
Steps taken by the Government of India to control air pollution include
The number of photo electrons emitted for light of a frequency $\upsilon$ (higher than the threshold frequency $v_0) $ is proportional to
Among the following which is the strongest oxidising agent?
The half-life of a radioactive element is 10 hours. How much will be left after 4 hours in 1 g atom sample?
Which of the following is a soap?
Which of the following gives $RNC$ when treated with $CHCl_{3}$ and $KOH$?
Hinsberg reagent, $C_{6}H_{5}SO_{2}Cl$ does not react with
Correct order of freezing point of $ 1\,M $ solution of sucrose, $ KCl,\,BaCl_{2}$ and $ AlCl_{3}$ is
The condensation polymer among the following is
$5$ moles of $SO_2$ and $5$ moles of $O_2$ are allowed to react. At equilibrium, it was found that $60\% $ of $SO_2$ is used up. If the partial pressure of the equilibrium mixture is one atmosphere, the partial pressure of $O_2$, is
In the reaction $BrO _{3}^{-}( aq )+5 Br ^{-}( aq )+6 H ^{+} \rightarrow 3 Br _{2}(l)+3 H _{2} O (l)$ The rate of appearance of bromine $\left( Br _{2}\right)$ is related to rate of disappearance of bromide ions as following
Which one of the following is strongest Lewis acid ?
Which one of the following molecules is paramagnetic?
The molar mass of the solute sodium hydroxide obtained from the measurement of the osmotic pressure of its aqueous solution at $27^{\circ} C$ is $25 \,g \,mol ^{-1}$. Therefore, its ionization percentage in this solution is
The percentage of carbon in cast iron is
The most acidic among the following is
Which one of the following does not form sodium bisulphite addition product with sodium bisulphite solution?