List of top Chemistry Questions

Which of the following is a false statement?
Which of the following compounds does not exist?
The complex which does not show optical isomerism is
Calculate the molar conductance of 0.025M aqueous solution of calcium chloride at 25°C. The specific conductance of calcium chloride is \( 12.04 \times 10^{-2} \, \text{S} \, \text{m}^{-1} \)
Which of the following show both Frenkel and Schottky defect?
Which of the following statement is incorrect about activation energy? Higher the activation energy slower is the rate of reaction.
For the reaction \( 2 N_2O_5 \rightarrow 4 NO_2 + O_2 \). If initial pressure is 100 atm and rate constant \( k \) is \( 3.38 \times 10^{-5} \, \text{s}^{-1} \), After 20 min the final pressure of \( N_2O_5 \) will be:
Which of the following does not affect solubility of a gas in liquid?
Which among the following forms minimum boiling azeotropes?
(i) Heptane + Octane
(ii) Water + Nitric acid
(iii) Ethanol + Water
(iv) Acetone + Carbon dioxide
The solution which has the lowest freezing point is
The relation between work done in reversible and irreversible process is
The P – O bond order in \( \text{PO}_4^{3-} \) is
KMnO$_4$ acts as an oxidising agent in acidic medium. The number of moles of KMnO$_4$ that will be required to react with one mole of oxalate ions (to form CO$_2$) in acidic solution is:
The colour of \( \text{CrO}_4^{2-} \) changes to \( \text{Cr}_2\text{O}_7^{2-} \) is
Which of the following gas readily de-colourises the acidified KMnO\(_4\) solution?
Which of the following gas readily de-colourises the acidified KMnO\(_4\) solution?
Which of the following is added to soaps to impart antiseptic properties?
Which of the following statement is incorrect for \( \mathrm{H_2O_2} \) structure?
Which of the following is highly basic?

A nucleic acid whether DNA or RNA on complete hydrolysis, two purine bases, two pyrimidine bases, a pentose sugar and phosphoric acid.Nucleotides which are intermediate products in the hydrolysis contain 

Which institute has approved the emergency use of 2-deoxy-D-Glucose as additive therapy for Covid -19 patients?
Which of the following is correctly matched?

A secondary amine is 

The test to differentiate between pentan - 2 - one and pentan - 3 - one is 

Reaction by which benzaldehyde can not be prepared is