Following compounds are given

(i) CH₃CH₂OH

(ii) CH₃COCH₃

(iii) ${\mathrm{CH}}_3-\left(\mathrm{CH}\right)\mathrm{CHOH}$

(iv) CH₃OH

Which of the above compound(s) on being warmed with iodine solution and NaOH, will give iodoform?

• (i), (iii) and (iv)

• Only (ii)

• (i), (ii) and (iii)

• (i) and (ii)

A dihaloalkane 'X, having formula C₃H₆Cl₂, on hydrolysis gives a compound, that can reduce Tollen's reagent. The compound 'X' is

• 1, 2-dichloropropane

• 1, 1-dichloropropane

• 1, 3-dichloropropane

• 2, 2-dichloropropane

Chloroform on reduction with zinc dust and water gives

• methyl chloride

• dichloro methane

• chloro methane

• methane

Negative inductive effect is shown by

• -CH₃

• -CH₂CH₃

• -NH₂

• (CH₃)₂CH-

How many isomeric vicinal-dihalides are possible for the compound having molecular formula C₃H₆Cl₂ ?

• 1

• 2

• 3

• 4

$$\begin{gathered} \mathrm{CH}\equiv \mathrm{CH} \stackrel{\mathrm{HCl} \mathrm{excess}}{\to } \mathrm{A} \underset{∆}{\overset{\mathrm{Hydrolysis}}{\to }} \mathrm{B} \underset{\mathrm{Na}-\mathrm{Hg}/ {\mathrm{H}}_2\mathrm{O}}{\overset{\mathrm{Reduction}}{\to }} \mathrm{C} \\ \mathrm{compound} \mathrm{C} \mathrm{is} \end{gathered}$$

• ethanal

• propenal

• ethanol

• 2-methyl butan-1-ol

The rate of S_N2 reaction is maximum when the solvent is

• CH₃OH

• H₂O

• DMSO

• Benzene

68.

The IUPAC name of the compound  is 

• 1-bromo-1-chloro-4, 4'-bicyclobutane

• 4-( 4'-chlorocyclobutyl)-1-bromocyclobutane

• 3-bromo-3'-chloro-1, 1-bicyclobutane

• 4-(4'-bromocyclobutyl)-1-chlorocyclo butane

Which of the following compound is used as a refrigerant?

• CCl4

• CCl₂F₂

• CF₄

• Acetone

What is the chemical composition of Nicol prism?

• Al₂O₃

• CaSO₄

• CaCO₃

• Na₃AlF₆