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

Aldol condensation between which of the following compounds followed by dehydration gives 4-Methylpent-3-en-2-one?

Benzaldehyde gives all tests positive EXCEPT ____________.

The product formed after reaction between benzaldehyde and methyl magnesium iodide followed by acid hydrolysis is ____________.

The standard enthalpy of formation of ammonia is −46.0 kJ mol⁻¹. The enthalpy change for the reaction:

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

Which of the following is Schiff's reagent?

Ethyl methyl ketone can be reduced to n-butane by which of the following reactions?

____________ states that equal volumes of all gases under identical conditions of temperature and pressure contain equal number of molecules.

An element has a bee structure with cell edge of 288 pm. The density of element is 7.2 g cm^-3. What is the atomic mass of an element?

The optically inactive amino acid is ____________.

Identify the INCORRECT reaction.

The conjugate acid of \[\ce{CO^2-_3}\] is ____________.

Identify A in the following reaction.

\[\ce{A + CH3MgBr ->[Ether] complex ->[H3O+] (CH3)3C - OH}\]

Identify the enzyme X in the following reaction.

\[\ce{H2O2(aq) ->[x] H2O(l) + \frac{1}{2} O2(g)}\]

What is standard N ≡ N bond enthalpy from following reaction,

\[\ce{N2_{(g)} + 3H2_{(g)} -> 2NH3_{(g)}; \Delta H^0 = - 83 kJ}\]

\[\ce{ΔH^0_{(H-H)}}\] = 435 kJ; \[\ce{ΔH^0_{(N-H)}}\] = 389 kJ

Identify the enzyme that catalyses the reaction of CO₂ with water in huma body.

Which among the following amino acids has lowest molar mass?

Calculate the potential of hydrogen electrode at 25°C:

Pt, H₂ (1 atm) | H⁺ (0.1 M)

For which of the following ∆U = ∆H?

Which of the following gives red precipitate with Fehling's solution?

ln which of the following reactions, both oxidised and reduced forms of the same compound are obtained?