List of top Chemistry Questions

Which one of the following is the true covalent oxide of iodine?

When $H _{2} S$ gas is passed through the $HCl$ containing aqueous solution of $CuCl _{2}, HgCl _{2}$, $BiCl _{3}$ and $CoCl _{2}$, it does not precipitate out

Among the following components of cement which is present in highest amount?

Acetamide and $NaOBr/OH^-$ produce

According to MOT,$ C_2$ molecule has

The number of moles of $ KMnO_{4} $ reduced by one mole of $KI$ in alkaline medium is

Which of the following oxidation states are the most characteristics for lead and tin respectively?

Which of the following polymers is prepared by condensation polymerisation ?

Which one of the following ions is the most stable in aqueous solution? (At. no. $Ti = 22, V = 23, Cr = 24, Mn = 25$ )

Which one of the following is a chain growth polymer?

Which one of the following shows functional isomerism ?

Which one of the following statements about amino acids is not true?

If $NaCl$ is doped with $10^{-4}\, mol \, \% $ of $SrCl_2,$ the concentration of cation vacancies will be $(N_A = 6 . 0 2 3 \times 10^{23}\,mol^{-1})$

The helical structure of protein is stabilized by

A sequence of how many nucleotides in messenger RNA makes a codon for an ammo acid?

Number of chiral carbon atoms in $ {{\beta }-{D-(+)-}} $ glucose is

$ {{H}_{2}}O $ is dipolar, whereas $ Be{{F}_{2}} $ is not. It is because

The standard emf of a galvanic cell involving cell reaction with $ n=2 $ is found to be $0.295\, V$ at $ 25{}^\circ C $ .The equilibrium constant of the reaction would be (Given: $ F=96500\,C\,mo{{l}^{-1}}; $ $ R=8.314\,J{{K}^{-1}}mo{{l}^{-1}} $ )

In a regular octahedral molecule, $ M{{X}_{6}} $ the number of $ X-M-X $ bonds at $ 180{}^\circ $ is

Aniline when diazotised in cold and then treated with dimethyl aniline gives a coloured product. Its structure would be:

Chloropicrin is obtained by the reaction of

Reaction of $HBr$ with propene in the presence of peroxide gives

The $ -OH $ group of an alcohol or the $ -COOH $ group of a carboxylic acid can be replaced by $ -Cl $ using

Which is the best description of behaviour of bromine in the reaction given below? $ H_2O + Br_2 \to HBr + HOBr$

Which one of the following can be oxidized to the corresponding carbonyl compound?