List of top Questions asked in MET- 2018

Cane sugar on treating with conc. $\mathrm{H}_2\mathrm{SO}_4$ gives char. It is because $\mathrm{H}_2\mathrm{SO}_4$ is

Which of the following sets of quantum numbers is impossible arrangement?

The formation of oxide ion $\mathrm{O}^{2-}(g)$ requires first an exothermic and then an endothermic step as shown below: $\mathrm{O}(g) + e^- \longrightarrow \mathrm{O}^-(g); \Delta H^\circ = -142\mathrm{kJ}\mathrm{mol}^{-1}$ and $\mathrm{O}^-(g) + e^- \longrightarrow \mathrm{O}^{2-}(g); \Delta H^\circ = 844\mathrm{kJ}\mathrm{mol}^{-1}$. This is because

The type of isomerism present in nitroamphetamine chromium (III) chloride is

Which of the following ions has the highest magnetic moment?

The standard reduction potentials for two half-cell reactions are given below. $\mathrm{Cd}^{2+}(aq) + 2e^- \longrightarrow \mathrm{Cd}(s); E^\circ = -0.40\mathrm{V}$ and $\mathrm{Ag}^{+}(aq) + e^- \longrightarrow \mathrm{Ag}(s); E^\circ = 0.80\mathrm{V}$. The standard free energy change for the reaction $2\mathrm{Ag}^{+}(aq) + \mathrm{Cd}(s) \longrightarrow 2\mathrm{Ag}(s) + \mathrm{Cd}^{2+}(aq)$ is given by

Lyophilic sols are more stable than lyophobic sols because

$99%$ of a first order reaction was completed in $32 \mathrm{min}$. When will $99.9%$ of the reaction complete?

Which of the following will give positive iodoform test?

Which one of the following solutions exhibits the maximum elevation in boiling point?

Starch is the polymer of

The coefficients of $\mathrm{I}^-$, $\mathrm{IO}_3^-$ and $\mathrm{H}^+$ in the redox reaction $\mathrm{I}^- + \mathrm{IO}_3^- + \mathrm{H}^+ \longrightarrow \mathrm{I}_2 + \mathrm{H}_2\mathrm{O}$ in the balanced form respectively are}

Coordination number of Zn in ZnS is

pH of an acid buffer is given by

What is the order of the reaction which has a rate expression $\mathrm{rate} = k[A]^2 [B]^{-1}$?

In $\mathrm{S}_{\mathrm{N}}1$ reaction, the racemization takes place. It is due to

When phenol is treated with excess of bromine water it gives

$\mathrm{CH}_3\mathrm{COOH} + \mathrm{NH}_3 \longrightarrow \mathrm{X} \xrightarrow{\Delta} \mathrm{Y}$; $\mathrm{Y}$ is

A certain amount of a metal whose equivalent mass is 28 displaces $0.7 \mathrm{L}$ of $\mathrm{H}_2$ at STP from an acid. Hence, mass of the element is

In the atomic spectrum of hydrogen, the spectral lines pertaining to electronic transition of $n = 4$ to $n = 2$ refers to

The electron affinity of Be is almost similar to that of

If $20 \mathrm{g}$ of $\mathrm{CaCO}_3$ is treated with $100 \mathrm{mL}$ of $20%$ HCl solution, the amount of $\mathrm{CO}_2$ produced is

For a process to be spontaneous

A wire of length $100~\mathrm{cm}$ is connected to a cell of emf $2\mathrm{V}$ and negligible internal resistance. The resistance of the wire is $3\Omega$. The additional resistance required to produce a potential difference of $1\mathrm{mV / cm}$ is}

In the figure a carbon resistor has bands of different colours on its body as mentioned in the figure. The value of the resistance is}