121.

Which of the following belongs to the homologous series of C₅H₈O₂N?

• C₆H₁₀O₃N

• C₆H₈O₂N₂

• C₆H₁₀O₂N₂

• C₆H₁₀O₂N

Identify the statement which is not correct?

• Dehydrobrominaton of 2-bromopentane gives pent-1-ene as the major product

• Freon 12 is manufactured by Swarts reaction

• CHCl₃ is stored in closed, dark coloured bottles

• Chronic exposure to CHCl₃ causes liver damage

In the combustion of 2.0 g of methane, 25 kcal heat is liberated, heat of combustion of methane would be

• 100 kcal

• 200 kcal

• 300 kcal

• 400 kcal

Identify the correct statements for a ring system to exhibit aromaticity

(i) It must not be planar

(ii) The ring must contain (4n+ 2)Π electrons.

(iii) The ring must be planar.

(iv) It must possess 4n Π electrons.

The correct answer is:

• ii, iv

• i, ii

• i, iv

• ii, iii

How many isomeric butanes are there?

• 2

• 3

• 4

• 5

Aromatic properties of benzene are proved by

• aromatic sextet theory

• resonance theory

• molecular orbital theory

• All of the above

Marsh gas primarily contains

• C₂H₂

• CH₄

• H₂S

• CO

Benzene hexachloride is used as

• dye

• antimalarial drug

• antibiotic

• insecticide

The correct order of stability of following carbocation is

• (III) > (II) > (I) > (IV)

• (II) > (III) > (I) > (IV)

• (I) > (II) > (III) > (IV)

• None of the above

Baeyer's reagent decolourises which of the following?

• Alkane

• Alkene

• Alkene and alkyne both

• None of the above