Question

39. How many dibromo derivatives of an aromatic
hydrocarbon with molecular mass 78 can be?
(1) 4
(2) 3
(3) 2
(4) 5​

Answer 1

Answer:

Option - 2

Answer- 3

Explanation:

benzene in presence of dibromo derivative gives 1-bromobenzene, 1,2-dibromobenzene, 1,2,4- tribromobenzene.

Therefore answer is 3

Answer 2

The answer is option 2:

Explanation:

(2) 3

• There's dibromobenzene.

• 1-bromobenzene, 1,2-dibromobenzene, and 1,2,4-tribromobenzene are the derivatives.
• Benzene is a colourless or light yellow liquid that is colourless or light yellow at room temperature.
• It is highly combustible and has a sweet odour.
• Benzene evaporates fast into the atmosphere.
• Because its vapour is heavier than air, it may settle in low-lying places.
• Benzene just minimally dissolves in water and floats on top of it.