Alloy is an example of

• gel

• solidified emulsion

• solid solution

• sol

In Lucas test an alcohol reacts immediately and gives insoluble chloride. The alcohol is

• CH₃OH

• CH₃CH₂OH

• (CH₃)₂CHOH

• (CH₃)₃COH

The reactant (X) in the following reaction is-

(X) $\underset{({\mathrm{CH}}_3\mathrm{CO}{)}_2\mathrm{O}}{\overset{{\mathrm{CH}}_3\mathrm{COONa}}{\to }}$ Cinnamic acid 

A compound (X) on ozonolysis followed by reduction gives an aldehyde C₂H₄O and 2-butanone, compound (X) is

• 3-methyl pentene-2

• 3-methyl pentene-3

• 3-methyl hexene-3

• 3-ethyl pentene-3

Protic solvent is

• diethyl ether

• n-hexane

• acetone

• ethanol

Glycerol is more viscous than ethanol due to

• high molecular weight

• high boiling point

• many hydrogen bonds per molecule

• Fajan's rule

A Zwitter ion is

• a negatively charged ion without metal atom

• a heavy ion with a small charge on it

• an ion with positive and negative charge at different points on it

• a positively charged ion without a metal atom

Toluene on treatment with CrO₃ and (CH₃CO)₂O followed by hydrolysis with dil HCl gives

• benzaldehyde

• benzoic acid

• phenol

• phenylacetaldehyde

69.

F₂C = CF₂ is a monomer of

• teflon

• nylon

• glyptal

• buna-S

Which of the following, is an example of aldol condensation?

• 2CH₃COCH₃ $\stackrel{\mathrm{dil}. \mathrm{NaOH}}{\to }$ CH₃COHCH₃CH₂COCH₃

• 2HCHO $\stackrel{\mathrm{dil}. \mathrm{NaOH}}{\to }$ CH₃OH

• C₆H₅CHO + HCHO $\stackrel{\mathrm{dil}. \mathrm{NaOH}}{\to }$ C₆H₅CH₂OH

• None of the above