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

What is the potential of a half-cell consisting of zinc electrode in 0.01 M ZnSO₄ solution at 25°C (E⁰ = −0.763 V)?

The formation of aldehyde from an alkyl cyanide using SnCl₂/conc.HCl is known as ____________.

Identify the metal and its atomic number which has an electronic configuration of [Xe]6s¹.

For the electrochemical cell:

\[\ce{M | M+ || X- | X}\]; 

\[\ce{E^{\circ}_{{M^{+}/{M}}}}\] = 0.44 V,

\[\ce{E^{\circ}_{X/X^-}}\] = 0.33 V

Which of the following is TRUE for this data?

The conjugate acid of \[\ce{HSO^-_4}\] is ____________.

When heat is released during the reaction, it is denoted as ____________ and when work is done on the system by the surroundings, it is denoted as ____________.

Calculate the amount of work done in bar dm³ when 2 moles of an ideal gas expands isothermally from a volume of 155 dm³ to 200 dm³ against a constant external pressure of 1 bar.

Phenol reacts with concentrated nitric acid in the presence of cone. H₂SO₄ to form ____________.

The unit of Henry's law constant is ____________.

In the formation of an aldol, α-carbon atom of one aldehyde molecule attaches to ____________ of another aldehyde molecule.

If 'I' stands for the distance between the electrodes and 'a' stands for the area of cross-section of the electrode, `"l"/"a"` refers to ____________.

Number of oxygen atoms present in salicylaldehyde are ______.

\[\ce{C3H8O ->[KMnO4][(Oxidation)] C3H6O2}\]

The compound C₃H₈O is a/an ____________.

A solution of CuSO₄ is electrolysed using a current of 1.5 amperes for 10 minutes. What mass of Cu is deposited at cathode? [Atomic mass of Cu = 63.7]

Which of the following reaction proves the chlorinating property of phosphorus pentachloride?

Which of the following pairs of aryl halides cannot be prepared directly by electrophilic substitution?

Using the standard electrode potentials given below, identify the correct statements from the following:

\[\ce{Fe^2+ + 2e^- -> Fe}\]; E⁰ = −0.44 V

\[\ce{Cu^2+ + 2e^- -> Cu}\]; E⁰ = +0.34 V

\[\ce{Ag^+ + e^- -> Ag}\]; E⁰ = +0.80 V

(I) Copper can displace iron from FeSO₄ solution

(II) Iron can displace copper from CuSO₄ solution

(III) Silver can displace copper from CuSO₄ solution

(IV) Iron can displace silver from AgNO₃ solution

Identify compound 'B' in following series of reactions?

\[\ce{Acetonitrile ->[Na/alcohol] A ->[NaNO2/dil.HCI] B}\]

Catalyst used in Rosenmund reduction is ____________.

An acylchloride is hydrogenated over catalyst palladium on barium sulphate to form an aldehyde. This reaction is called as ______.