Chemistry Mcqs

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

Organic compounds are soluble in ____________________?

• (A)  polar solvent
• (B)  non-polar solvent
• (C)  alkalies
• (D)  water

Answer

Submitted By :Ali Uppal

Compounds having same molecular formula but differ in structural formula are called __________________?

• (A)  polymer
• (B)  monomer
• (C)  isomer
• (D)  allotropes

Answer

Submitted By :Ali Uppal

Chemical properties of first member of homologous series with respect to other members are_________________?

• (A)  same
• (B)  different
• (C)  depends upon number of C atoms
• (D)  depends upon number of H atoms

Answer

Submitted By :Ali Uppal

First organic compound synthesized in laboratory was _________________?

• (A)  tartaric acid
• (B)  ethyl alcohol
• (C)  methanol
• (D)  urea

Answer

Submitted By :Ali Uppal

The first organic compound was synthesized in laboratory by_________________?

• (A)  Wohler
• (B)  Kolbe
• (C)  Berzilius
• (D)  Berthelot

Answer

Submitted By :Ali Uppal

Pentane and 2-methyl butance have the same_______________?

• (A)  Boiling point
• (B)  Melting point
• (C)  Percentage composition
• (D)  Structural formula

Answer

Submitted By :Ali Uppal