Organic Chemistry

1.of benzene and acetylene
A. The molecular formula and the proportional formula are the same
B. molecular formulas are different but proportional formulas are the same
C. Same molecular formula but different proportional formula
D. no one is right
Option”B” is correct
2.The empirical formula of a compound is CH₂O and molecular weight is 60. The molecular formula of its compound will be –
A. C₂H₄O
B. C₂H₄O₂
C. CH₂ₒ
Option”B” is correct
3.The conversion of a solid substance directly into a vapor state without changing into a liquid is called
A. by distillation
B. boiling
C. Sublimation
D. compaction
Option”C” is correct
4.The slow decomposition of organic compounds by micro-organisms is called
A. chlorination
B. polymerization
C. Pasteurization
D. Fermentation
Option”D” is correct
5.The process of converting complex higher hydrocarbons of less volatile high boiling point into simpler hydrocarbons of lower boiling point by heating is called
A. polymerization
B. compaction
C. Bhanjan
D. Fermentation
Option”C” is correct
6.The process of vaporization of solid camphor is called
A. evaporation
B. Freezing
C. to thaw
D. Sublimation
Option”D” is correct
7.Souring of milk into curd is an example of –
A. Saponification
B. Puyan
C. Fermentation
D. esterification
Option”C” is correct
8.An example of fermentation is –
A. sour milk
B. souring of wet dough
C. distillate
D. All of the above
Option”D” is correct
9.Which is a false statement regarding polymerization?
A. it is a reversible reaction
B. different types of molecules combine with each other
C. The molecular mass of a polymeric compound is a whole multiple of the molecular mass of the starting compound.
D. Carbon atoms do not form new bonds in this
Option”B” is correct
10.An example of pluralization is –
A. conversion of acetylene to benzene
B. formaldihyde से trioxane
C. ecetealdihyde से paraldihyde
D. All of the above
Option”D” is correct