List of top Chemistry Questions

An organic compound $A(C_4 H_9 C1)$ on reaction with Na/diethyl ether gives a hydrocarbon which on monochlorination gives only one chloro derivative, then A is

A compound of molecular formula $C_7H_{16}$ shows optical isomerism, compound will be

Which one of the following halogen liberates oxygen, when passed through hot concentrated KOH solution ?

Phenol is treated with bromine water and shaken well to get white precipitate. The white precipitate is

Vapour density of a metal chloride is 47.5. If the valency of metal is 2, the metal is:

For the reaction, $2N_{2}O_{5} \to 4NO_{2} + O_{2}$ rate and rate constant are $1.02 \times 10^{-4}\,mol\, L^{-1} s^{-1}$ and $3.4 \times 10^{-5} s^{-1}$ respectively. The concentration of $N_{2}O_{5}$ in mol $L^{-1}$ will be

Correct order of 1st ionisation potential (IP) among following elements Be, B, C, N, O is

Which of the following is correct about $H$-bonding in $DNA$?

Intermediates formed during reaction of RCNH2||O with Br2 and KOH are

Which one of the following gives positive Fehling's solution test?

The incorrect IUPAC name is

In steam distillation of toluene, the pressure of toluene in vapour is

The atomic number (Z) of an element is 25. In its ground state, how many electrons are present in the 'N' shell ?

Half life period of C14 is

Which is not correct regarding the adsorption of a gas on surface of solid

Which of the following is not correctly matched

Pure water can be obtained from sea water by

Ionisation constant of $ CH_3COOH $ is $ 1.7 \times 10^{-5} $ and concentration of $ H^+ $ ions is $ 3.4 \times 10^{-4} $ . Then, find out initial concentration of $ CH_3COOH $ molecules.

Which of the following is correct statement?

Spoilage of oil can be detected by which fatty acid

Which of the following is correxct about Hbonding in nucleotide

-C||ONH-(peptide bond) which statement is incorrect about peptide bond

Which of following organometallic compound is \(\sigma\) and \(\pi\) bonded 

An electron in hydrogen atom makes a transition $n_1 \rightarrow n_2$ where $n_1$, and $n_2$ are principal quantum numbers of the two states. Assuming Bohr?? model to be valid, the time period of the electron in the initial state is eight times that in the final state. The possible