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

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?

Identify thermoplastic polymer from the following.

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 ______.

Select the compound which on treatment with nitrous acid liberates nitrogen.

Which among the following solid is a non-polar solid?

Which of the following statements is incorrect regarding the dehydrohalogenation of alkenes?

12 g of a nonvolatile solute dissolved in 108 g of water produces the relative lowering of vapour pressure of 0.1. The molecular mass of the solute is ______.

A catalyst lowers the activation energy of a certain reaction from 83.314 to 75 kJ mol⁻¹ at 500 K. What will be the rate of reaction as compared to uncatalysed reaction? Assume other things are equal.