MAH-MHT CET (PCM/PCB) entrance exam Question Bank Solutions

Hinsberg's reagent is ______.

In Clemmensen's reaction, ketone gives ____________.

The enthalpy change for two reactions are given by the equations

\[\ce{2Cr_{(s)} + 1.5 O2_{(g)} -> Cr2O3_{(s)}}\];

∆H₁ = −1130 kJ ............(i)

\[\ce{C_{(s)} + 0.5 O2_{(g)} -> CO_{(g)}}\];

∆H₂ = −110 kJ .........(ii)

What is the enthalpy change, in kJ, for the following reaction?

\[\ce{3C_{(s)} + Cr2O3_{(s)} -> 2Cr_{(s)} + 3CO_{(g)}}\]

Boron has two isotopes ¹⁰B and ¹¹B with atomic masses 10 and 11, respectively. If its average atomic mass is 10.81, the abundance of ¹⁰B is ____________.

Acetone on Clemmensen reduction gives ____________.

Given the bond energies N ≡ N, H – H and N – H bonds are 945, 436 and 391 kJ/mol respectively. The enthalpy of the reaction;

\[\ce{N2_{(g)} + 3H2_{(g)} -> 2NH3_{(g)}}\]

Nanostructures on lotus leaves repel water which carries dirt as it rolls off. This Lotus effect is used in ____________.

In which of the following reactions does the heat change represent the heat of formation of water?

In which of the following reactions, ∆H is greater than ∆U?

Compounds of general formula, are called ____________.

\[\begin{array}{cc} \phantom{...}\ce{R}\phantom{....}\ce{OR'}\phantom{}\\ \phantom{}\backslash\phantom{..}/\\ \ce{C}\\ \phantom{}/\phantom{..}\backslash\\ \phantom{...}\ce{H}\phantom{....}\ce{OR'}\phantom{} \end{array}\]

The compound which does NOT undergo haloform reaction is ____________.

____________ is used as a primary reference electrode to determine the standard potentials of other electrodes.

Which of the following will give positive iodoform test?

Following reaction is an example of ____________.

\[\ce{Benzaldehyde ->[Nitration] {m}-Nitrobenzaldehyde}\]

The basic amino acid is ____________.

Which of the following hydride does not obey law of constant proportion?

If side-chain group-R for amino acid is -CH₂OH, identify the amino acid from following?

Work done when 2 moles of an ideal gas is compressed from a volume of 5 m³ to 1 dm³ at 300 K, under a pressure of 100 kPa is ____________.

Identify basic amino acid from following.

Which among the following compounds is obtained when diethyl amine reacts with benzene sulphonyl chloride?