Chemistry- Class XII test series -1

In the reaction sequence, C2H5Cl + KCN ⟶ C2H5OH ⟶ Y. What is the molecular formula of Y?

• C3H6O2

• C3H5N

• C2H4O2

• C2H6O

Which one of the following forms propane nitrile as the major product?

• Ethyl bromide + alcoholic KCN

• Propyl bromide + alcoholic KCN

• Propyl bromide + alcoholic AgCN

• Ethyl bromide + alcoholic AgCN

The compound A forms B with sodium metal and again A forms C with PCl5, but B and C form diethyl ether. Therefore A, B and C are:

• C2H5OH, C2H5ONa, C2H5Cl

• C2H5OH, C2H5Cl, C2H5ONa

• C2H5OH, C2H5Cl, C2H4Cl2

• C2H5OH, C2H5Cl, C2H5ONa

For the carbylamine reaction we need hot alcoholic KOH and:

• Any amine and chloroform

• Chloroform and silver powder

• A primary amine and an alkyl halide

• Any monoalkyl amine and trichloro methane

Ethyl bromide reacts with lead-sodium alloy to form:

• Tetraethyl lead

• Tetraethyl bromide

• Both (a) and (b)

• None of these

The number of possible enantiomeric pairs that can be produced during mono-chlorination of 2-methyl butane is

• 3

• 4

• 1

• 2

Alkyl halides on treatment with a suspension of Ag2O moist in ether gives:

• Alkanol

• Alkanal

• Alkanes

• Alkoxy alkane

The conversion of ethyl chloride into diethyl ether takes place by

• Williamson’s synthesis

• Perkin’s reaction

• Wurtz reaction

• Grignard reaction

Which process does not occur during formation of CHCl3 from C2H5OH and bleaching powder?

• Hydrolysis

• Oxidation

• Elimination

• Chlorination

Which of the following does not answer iodoform test?

• n-butyl alcohol

• Acetophenone

• Acetaldehyde

• Ethylmethyl ketone