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

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.

The order of reactivity of the given haloalkanes towards nucleophiles is:

An ideal gas expands against a constant external pressure of 2.0 atmosphere from 20 litre to 40 litre and absorbs 10 kJ of heat from the surrounding. What is the change in the internal energy of the system?

(Given: 1 atm-litre = 101.3 J)

Which of the following compounds gives a dye test?

The standard EMF for the cell reaction,
\[\ce{Zn + Cu^{2+} -> Zn^{2+} + Cu}\], 
is 1.10 V at 25°C. The EMF of the cell reaction, when 0.1 M Cu²⁺ and 0.1 M Zn²⁺ solutions are used at 25°C is:

Which among the following equation represents Arrhenius equation?

The vapour pressure of a solvent A is 0.80 atm. When a non-volatile substance B is added to this solvent its vapour pressure drops to 0.6 atm. the mole fraction of B in the solution is ______.

Which of the following solutions will have the maximum lowering of vapour pressure at 300 K?

Which of the following in Baeyer's reagent?

The compounds [PtCl₂(NH₃)₄]Br₂ and [PtBr₂(NH₃)₄]Cl₂ constitutes a pair of ______.

What is the pH of a 2.6 × 10^-8 MH⁺ ion solution? (log 2.6 = 0.4150)

Which element from the following has the highest negative standard reduction potential?

Which of following properties is not exhibited by benzene?

Which among the following statements is not correct about S_N2 reaction mechanism?

Identify the X in the reaction.

\[\ce{R - NH2 + HNO2 ->[NaNO2 + HCl][273 - 278 K] X ->[H2O] R - OH + N2\uparrow + HCl}\]

With which halogen the reactions, of alkanes are explosive?