51.

Lower members of aliphatic carboxylic acid are soluble in water. This is due to

• formation of hydrogen bonds with water

• due to london forces

• water is non electrolyte

• Van der- Waal's interaction with water molecules.

Hormones are secreted by ductless glands of human body. Iodine containing hormone is

• Adrenoline

• Thyroxine

• Testosterone

• Insulin

Cannizzaro's reaction is an example of auto oxidation

• It is a reaction answered by only aldehydes containing a hydrogen

• It is a reaction answered only by aromatic aldehydes.

• it is a reaction answered by all aldehydes

• it is a reaction answered by all aldehydes

Pick the wrong statements from the following.

• Deficiency of vitamin B6 (pyridoxume) results in convulsions.

• Sources of vitamin are yeast, milk, green vegetables and cereals.

• deficiency of vitamin D cause xerophthalmia

• Consumption of citrus fruits and green leafy vegetbles in food prevents scurvy.

Which of the following order is true regarding the acidic nature of phenol?

• Phenol < o-cresol < o-nitrophenol

• Phenol > o-cresol > o-nitrophenol

• Phenol < o-cresol > o-nitropheno

• o-cresol < phenol < o-nitrophenol

Identify the correct statement in the following

• n-butane and isobutane are functional isomers

• Propan-1-ol and propan-2-ol are position isomers

• Dimethyl ether and ethanol are chain isomers

• Ethanoic acid and methyl methanoate are position isomerase.

Galbriel phthalimide synthesis is used in the preparation of primary amine from phthalimide, which of the following reagent is not used during the process?

• KOH

• NaOH

• HCl

• Alkyl halides

In the following sequence of reactions

${\mathrm{CH}}_3\mathrm{Br} \stackrel{\mathrm{KCN}}{\to }, \mathrm{A} \stackrel{{\mathrm{H}}_3{\mathrm{O}}^{-}}{\to } \mathrm{B} \stackrel{\mathrm{LiAl}/{\mathrm{H}}_4}{\to }$

The end product C is

• acetone

• ethyl alcohol

• methane

• acetaldehyde

The monomer used in novolac, a polymer used in paints

• melamine and formaldehyde

• phenol and formaldehyde

• butadiene and acrylo nitrile

• butadiene and styrene

For the preparation of alkanes, aqueous solution of sodium of potassium salt of carboxylic acid is subjected to

• hydrolysis

• electrolysis

• hydrogenation

• oxidation