CUET (UG) entrance exam Question Bank Solutions

The most stable free radical among the following is

The rate constant of a first order reaction is 6.9 × 10^–3s^–1. How much time will it take to reduce the initial concentration to its 1/8^th value?

Tetragonal crystal system has the following unit cell dimensions:

Which of the following is strongest nucleophile?

H₂O₂ is

A primary amine is formed by an amide on treatment with bromine and alkali. The primary amine has

Given below are two statements, one is labelled as Assertion (A) and the other is labelled as Reason (R):

Assertion: Water is one of the best solvent.

Reason: H-bonding is present in water molecules.

HCl is added to following oxides. Which one would give H₂O₂ 

Butene-1 may be converted to butane by reaction with

First order reaction is 50% complete in 1.26 × 10¹⁴s. How much time could it take for 100% completion?

A first order reaction is 50% complete in 20 minute What is rate constant?

In the first order reaction, half of the reaction is complete in 100 seconds. The time for 99% of the reaction to occurs will be

The reaction X → product

Follow first order of kinetics. In 40 minutes the concentration of 'X' changes from 0.1 m to 0.025. M. The rate of reaction when concentration of X is 0.01 m is.

Time required to decompose SO₂Cl₂ to half of its initial concentration is 60 minutes. If the de-composite is a first order reaction, calculated the rate constant of the reaction-

Which of the following is paramagnetic?

The alky halide is converted into an alcohol by

Which is gem-dihalide?

Benzyl chloride (1₆H₅CH₂Cl) can be prepared from toluene by chlorination with

Iodo form can be prepared form all except

The alkyl halide which does not give white precipitate with alcoholic AgNO₃ solution is :-