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

Identify compound 'A' in the following reaction.

What is the product X obtained in the following reaction?

\[\ce{C6H5N2Cl ->[(i) HBF4, (ii) NaNO2/Cu][\Delta] X + N2 + NaBF4}\]

A sample of calcium carbonate has the following percentage composition.

Ca = 40%, C = 12% and O = 48%

According to law of definite proportion the weight of calcium in 4 g of a sample of calcium carbonate from another source will be (At. No.: Ca = 40, C = 12, O = 16)

Which of the following ionic species has highest precipitating power?

Identify product B in the following reaction.

\[\ce{C6H5N^+_2X^- ->[HBF4] A ->[NaNO2][Cu] B}\]

The reaction in which copper (I) salt is used to replace nitrogen in diazonium salt is called, ____________.

In the following reaction the reagent A is,

\[\ce{Ar - N^+_2 X^- ->[A] Ar - N^+_2 BF^-_4 ->[\Delta] Ar - F + BF3 + N2 ^}\]

Benzene diazonium chloride on reaction with ethanol forms ____________.

In which of the following sols there is low affinity between dispersed phase and dispersion medium?

Which of the following compounds is NOT a carbonyl compound?

After partial roasting, the sulphide of copper is reduced by ______.

The major product of the reaction between tert-butyl chloride and sodium ethoxide is ______.

In which of the following, the Tyndall effect is not observed?

The compound which is not formed when a mixture of n-butyl bromide and ethyl bromide treated with sodium metal in the presence of dry ether is ______.

Which metal is refined by Mond's process?

Isopropyl methyl ether when treated with cold hydrogen iodide gives ______.

Which of the following is most powerful to coagulate the negative colloid?

Which of the following represents the correct order of stability of the given carbocations?

Calcination is used in metallurgy for the removal of?

Smoke is an example of ______.