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

Identify 'B' in the following reaction.

\[\ce{2-Bromobutane ->[KOH alc.][\Delta] A ->[HI] B}\]

Identify reagent 'A' in the following conversion?

\[\ce{N-N Dimethyl aniline ->[A][273-278 K] 4-nitroso-N-N-dimethylaniline}\]

When propanamide is treated with bromine and alcoholic NaOH, it gives ______.

What is the product obtained in the following reaction?

Identify the enzyme 'X' in the following reaction.

\[\ce{H2O2_{(aq)} ->[X] H2O2_{(l)} + 1/2O2_{(g)}}\]

Copper crystallises with fee unit cell. If the radius of copper atom is 127.8 pm, calculate the density of copper? (At. mass: Cu = 63.55 g mol^-1)

38.4 g of unknown substance (molar mass 384 g mol^-1) and 116 g of acetone is used to prepare a solution at 313 K. If vapour pressure of pure acetone (molar mass 58 g mol^-1) is 0.842 atmosphere, what is the vapour pressure of solution?

Which of the following amines liberates nitrogen gas when treated with nitrous acid?

What is the standard potential of cell, Ni | Ni²⁺ (1M) || Cu²⁺ (1 M) | Cu?

If E°Cu = 0.337 V and E°Ni = - 0.236 V.

What is the major product obtained in the sulphonation of chlorobenzene with concentrated sulphuric acid?

What type of isomerism is present between (I) [Cr(H₂O)₆]Cl₃ and (II) [Cr(H₂O)₅Cl]Cl₂.H₂O?

What is the product obtained when ethyl amine is heated with large excess of ethyl iodide?

What is the percentage of void space in bcc type of in unit cell?

An element crystallizes in a bee lattice with cell edge of 500 pm. The density of the element is 7.5 g cm^-3. How many atoms are present in 300 g of metal?

Silver crystallizes in face centred cubic structure, if radius of silver atom is 144.5 pm. What is the edge length of unit cell?

Gold crystallizes in face centred cubic structure. If atomic mass of gold is 197 g mol^-1, the mass of unit cell of gold is ______.

When a system absorbs 8 kJ of heat and does 2.2 kJ of work on surrounding, calculate the internal energy change.

The standard electrode potential of Zn and Ni are - 0.76 V and - 0.25 V respectively. If the reaction takes place in the cell constructed between these two electrodes is spontaneous. What is the standard emf of the cell?

The major product formed when 2-bromobutane is treated with alcoholic KOH is ______.

The order of reactivities of the following alkyl halides for an S_N2 reaction is ______.