The molar conductivity of acetic acid at infinite dilution is 390.7 and for 0.1 M acetic acid solution is 5.2 mho cm² mol⁻¹ The degree of dissociation of 0.1 M CH₃COOHsolution is:

1) 13.3%
2) 0.0133%
3) 1.33%
4) 133%

Silk and woolen clothes are often damaged by

1) Flies

2) Insects

3) Bacteria

4) Animals

Which one of the following on oxidation with alkaline permangante solution yields benzoic acid ? :

1) Isopropyl chloride
2) Benzyl chloride
3) Chlorobenzene
4) Phenol.

Which of the following fertilizers does not replenish nitrogen in the soil? :

1) CAN
2) Urea
3) Super phosphate lime.
4) Ammonium phosphate

The number of sodium atoms in 2 moles of sodium ferrocyanide is

1)  8 x 6.02 x 10²³

2)  4 x 6.02 x 10²³

3)  6.02 x 10²³

4)  2

The volume of gases H₂, CH₄, CO₂ and NH₃ adsorbed by 1g of charcoal at 288K are in the order:

1) H₂  >CH₄ > CO₂ > NH₃
2) CH₂ > CO₂ > NH₃ > H₂
3) CO₂ >  NH₃ > H₂ > CH₂
4) NH₃  > CO₂ > CH₄  > H₂

Plastics being developed from eco-friendly renewable sources, plus some modern plastics are biodegradable is one of the achievements of

1) Waste management

2) Green revolution

3) Revolution resource recovery

4) Green chemistry

The highest ionization potential in a period is shown by

1)  halogens

2)  noble gases

3)  alkaline earth metals

4)  alkali metals

The reaction of 1-hexene with HBr in presence of peroxide yields 1-bromo cyclohexane. The mechanism of the reaction involves :

1 attack on alkene by a Br+ ion
2) attack on alkene by a bromide ion
3) attack on alkene by a bromine free radical
4) None of these

Polarization is the distortion of the shape of an anion by an adjacently placed cation. Which of the following statements is correct?

1)  Polarizing power of cation is less than that of anion

2)  A large cation is likely to bring about a large degree of polarization

3)  Maximum polarization is brought about by a cation of high charge

4)  Minimum polarization is brought about a large degree of polarization