List of top Chemistry Questions asked in KCET

The secondary valency of platinum in tetraamminedichloroplatinum $(IV)$ chloride is

A first order reaction is $60\%$ complete in $20$ minutes. How long will the reaction take to be $84\%$ complete ?

The total number of electrons in $18\, ml$ of water (density $= 1\, g \,ml^{-1} $) is

Impossible orbital among the following is

The volume of $0.1\, M$ oxalic acid that can be completely oxidized by $20\, ml$ of $0.025 \, M \, KMnO_4$ solution is

Which of the following is a negatively charged bidentate ligand ?

The atomic number of cobalt is $27$. The $EAN$ of cobalt in $Na_3 [Co(NO_2)_4Cl_2]$ is

All colloidal dispersions have

The mass of a non-volatile solute of molar mass $40\, g \,mol^{-1}$ that should be dissolved in $114\, g$ of octane to lower its vapour pressure by $20 \%$ is

Benzylamine is a stronger base than aniline because

The $s$-block element used as a catalyst in the manufacture of Buna-$S$ rubber is

$5\, ml$ of $0.4\, N\, NaOH$ is mixed with $20\, ml$ of $0.1\, N\, HCl$. The $pH$ of the resulting solution will be

On adding which of the following, the pH of $20\, ml$ of $0.1\, N\, HCl$ will not alter ?

Saccharin, an artificial sweetner, is manufactured from

Which one of the following is NOT true regarding electromeric effect ?

Which of the following is not true for $S_N1$ reaction ?

The $pH$ of the solution obtained by mixing $100\, ml$ of a solution of $pH = 3$ with $400\, ml$ of a solution of $pH = 4$ is

The correct order of electronegativities of $N, O, F$ and $P$ is

Sucrose is NOT a reducing sugar since

Power alcohol is a mixture of

Ethyl benzene cannot be prepared by

The amount of heat evolved when $500 \, cm^3$ of $0.1 \, M \, HCl$ is mixed with $200\,cm^3$ of $0.2 \, M \, NaOH$ is

The rms velocity of hydrogen is $\sqrt {7}$ times the rms velocity of nitrogen. If $T$ is the temperature of the gas, which of the following is true?

Following is the substitution reaction in which \(-CN\) replaces \(-Cl\)
\(R - CI + KCN \overset{\Delta}{\rightarrow} R - CN + KCI\)
To obtain propane nitrile, \(R-Cl\) should be:

When $O_2$ is converted into $O_2^+$