Practice Pakistan's most useful MCQs for competitive exams

Industrial materials thermal power stations are coated with__________________?

• (A)  Polyester resins
• (B)  Epoxy paints
• (C)  polyamide resins
• (D)  Polyvinyl chloride

Answer

Submitted By :Ali Uppal

The common name of propane -1 3-dioic acid is____________________?

• (A)  Oxalic acid
• (B)  Succinic acid
• (C)  Malonic acid
• (D)  Fumaric acid

Answer

Submitted By :Ali Uppal

Which one does not exhibit aldol condensation___________________?

• (A)  Ethanal
• (B)  Acetone
• (C)  Benzaldehyde
• (D)  Butanone

Answer

Submitted By :Ali Uppal

Which of the following is an amide________________?

• (A)  R-NH2
• (B)  RCONH2
• (C)  R – NH – R
• (D)  C6H5NH2

Answer

Submitted By :Ali Uppal

Compound containing benzene ring in their structure are __________________?

• (A)  aliphatic
• (B)  aromatic
• (C)  carboxylic acid
• (D)  carbohydrates

Answer

Submitted By :Ali Uppal

Isomerism which is present only in alkene is__________________?

• (A)  structural isomerism
• (B)  metamerism
• (C)  cis-trans isomerism
• (D)  both b and c

Answer

Submitted By :Ali Uppal

Which of the following can be used as anti-knocking agent ?

• (A)  PbCl2
• (B)  (C2H5)4 Pb
• (C)  (C2H5)2 Pb
• (D)  all of the above

Answer

Submitted By :Ali Uppal

The metallic sound produced by engine due to the pre-ignition of fuel is called _______________?

• (A)  knocking
• (B)  reforming
• (C)  cracking
• (D)  a and c

Answer

Submitted By :Ali Uppal

The precess in which larger molecule with higher molecular weight breaks down into smaller moleucles with lower molecular weight____________________?

• (A)  polymerization
• (B)  pyrolysis
• (C)  isomerism
• (D)  no such process occurs

Answer

Submitted By :Ali Uppal

Methane is used in power generation in chemical industries being a__________________?

• (A)  natural gas
• (B)  good caloric value
• (C)  cheaper
• (D)  All

Answer

Submitted By :Ali Uppal