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

Which of the following statements are CORRECT for NICAD cell and mercury battery?

I. Both can be recharged.

II. Both cannot be recharged.

III. Both are secondary voltaic cells.

IV. Both cells work using an acidic electrolyte.

Identify the product 'B' in the following reaction.

\[\ce{Benzamide ->[Br2/KOH] A ->[Br2 water][298 K] B}\]

Identify the INCORRECT statement about mercury battery.

At constant pressure, a quantity of an ideal gas occupies 1.0 × 10⁻² dm³ volume at 200 K. At what temperature, the volume will be 2.0 × 10⁻³ dm³?

The enthalpy change for the reaction; \[\ce{Na_{(s)} -> Na_{(l)}}\] is called enthalpy of ____________.

If the solubility product K_sp of a sparingly soluble salt AgBr at 25°C is x, the solubility of the salt is ____________.

A flavouring agent found in oil of wintergreen is ______.

Which of the following molecule can form a zwitter ion?

Products in the following reaction are:

\[\ce{CH3COOH + PCl3 ->[\Delta]}\]

The NICAD cell provides a potential of __________.

Which is the CORRECT representation for the solubility product (K_sp) of Bi₂S₃?

Which of the following carboxylic acids will have the highest acidity?

The mercury battery provides a constant voltage of ____________.

The elimination of CO₂ from a carboxylic acid is known as ____________.

Identify the CORRECT statements.

(I) Aniline reacts with bromine water at room temperature to give o-bromoaniline.

(II) Aniline undergoes Friedel Craft's reaction using aluminium chloride.

(III) Direct nitration of aniline yields, a mixture of ortho, meta and para nitro aniline.

(IV) Amino group is ortho and para directing and powerful ring activating group.

The enthalpy change for the transition of liquid water to steam, ∆_vapH = 37.3 kJ mol⁻¹ at 373 K. The entropy change for the process is ____________.

What amount of dinitrogen contains 3.6 × 10¹⁸ molecules?

The H-N-H bond angle in NH₃ molecule is ____________.

Identify the product obtained when chlorobenzene is heated with ammonia and Cu₂O at 473 K under pressure.

Which of the following groups increases the basic strength of substituted aniline?