Haloalkanes and Haloarenes

Identify the major products P, Q and R in the following sequence of reactions:

The compound C₇H₈ undergoes the following reactions:

The product 'C' is

• m-bromotoluene

• o-bromotoluene

• p-bromotoluene

• 3-bromo-2,4,6-trichlorotoluene

Hydrocarbon (A) reacts with bromine by substitution to form an alkyl bromide which by Wurtz reaction is converted to a gaseous hydrocarbon containing less than four carbon atoms. (A) is

• CH ≡ CH

• H₂C = CH₂

• CH₄

• CH₃-CH₃

1-butyne on oxidation with hot alkaline KMnO₄ would yield. Which of the following as end product?

• CH₃CH₂CH₂COOH

• CH₃CH₂COOH

• CH₃CH₂CH₂COOH + CO₂ + H₂O

• CH₃CH₂CH₂COOH + HCOOH

 A cubic unit cell of a metal with a molar mass of 63.55 g mol^-1 has an edge length of 362 pm. Its density is 8.92 g cm^-3. The type of unit cell is

• Primitive

• Face centred

• End centred

• Body Centred

Which of the following is the major product in the reaction of HOBr with propene?

• 2-bromo, 1-propanol

• 3-bromo,1-propanol

• 2-bromo, 2-propanol

• 1-bromo, 2-propanol

Which of the following is the correct IUPAC name?

• 3,4 -dimethyl pentanoyl chloride

• 1-chloro-1-oxo-2, 3-dimethyl pentane

• 2-ethyl-3-methyl butanoyl chloride

• 2,3-dimethyl pentanoyl chloride

The pair of boiling point and compound are given as,

C₆H₆ (80$°$C); CH₃OH (65$°$C); C₆H₅NO₂ (212$°$C) and C₆H₅NH₂ (184$°$C)

Which will show lowest vapour pressure at room temperature?

• C₆H₆

• CH₃OH

• C₆H₅NO₂

• C₆H₅NH₂

In the following conversion,

Identify 'A' from the following option

• NaBD₄

• LiAID₄

• Mg, ether/D₂O

• BH₃, D₂O

Ethers like ROR can be cleaved by concentrated HI but not by HCl because

• I^- is a weaker nucleophile than Cl^-

• I^- is stronger nucleophile than Cl^-

• S_N1 mechanism carried out in this reaction is rapidly in presence of HI.

• None of the above