Which is correct example of condensation polymer?

• Nylon, Buna-S

• Teflon, Buna-N

• Nylon 6,6, Dacron

• Neoprene, Buna-S

Which is the major product formed when C₆H₅CONHC₆H₅ undergoes nitration?

Nitrobenzene (PhNO₂) $\stackrel{\mathrm{Zn} + {\mathrm{NH}}_4\mathrm{Cl}}{\to }$P ?

• C₆H₅NH₂

• C₆H₅NHOH

• C₆H₅-N=O

• C₆H₆

If phthalic acid is treated with NH₃ and then it is first heated weakly then strongly, the final product formed is

But-1-ene $\underset{{\mathrm{H}}_3\mathrm{O}}{\overset{({\mathrm{CH}}_3\mathrm{COO}{)}_2}{\to }}?$

The product in the above reaction is

• CH₃CH₂CH₂CH₂OH

• CH₃CH₂CH(OH)CH₃

• CH₂=CH₂CH(OH)-CH₃

• CH₃-CH=C(OH)-CH₃

56.

Assertion : The solubility of a gas in a liquid increases with increase of pressure.

Reason : The solubility of a gas in a liquid is directly proportional to the pressure of the gas.

• If both assertion and reason are true and reason is the correct explanation of assertion.

• If both assertion and reason are true but reason is not the correct explanation of assertion.

• If assertion is true but reason is false.

• If both assertion and reason are false.

${\mathrm{PhCH}}_2\mathrm{Cl}\stackrel{\mathrm{a}.\mathrm{q}. \mathrm{NaCl}}{\to }? \stackrel{\mathrm{Catalytic} \mathrm{hydrogenation}}{\to }\left(\mathrm{U}\right)$

The final product (U) is:

• C₆H₅CH₂CH₂NH₂

• C₆H₅CH₂CONH₂

• C₆H₅CH₂NH₂

• C₆H₅CH₂NHCH₃

In a set of reactions, acetic acid yielded a product S,

${\text{CH}}_3\mathrm{COOH} \stackrel{{\mathrm{SOCl}}_2}{\to } \mathrm{P} \underset{\mathrm{Anhy}. {\mathrm{AlCl}}_3}{\overset{\mathrm{Benzene}}{\to }} \mathrm{Q} \stackrel{\mathrm{HCN}}{\to } \mathrm{R} \stackrel{\mathrm{HOH}}{\to }\mathrm{S}$

The structure of S would be

An aromatic compound C₇H₆Cl₂ (A), gives AgCl on boiling with alcoholic AgNO₂ solution and yields C,HOCI on treatment with sodium hydroxide. (A) on oxidation gives monochlorobenzoic acid. The compound (A) is:

Assertion: HC= C^- is more stable than H₂C $\equiv$CH^-
Reason : HC$\equiv$ C^- has more s-character than HC= CH^-

• If both assertion and reason are true and reason is the correct explanation of assertion.

• If both assertion and reason are true but reason is not the correct explanation of assertion.

• If assertion is true but reason is false.

• If both assertion and reason are false.