12th class (Fsc) Chemistry unit 7 MCQs
chapter 7 MCQs 12th Class Chemistry
Fundamental Principles of Organic Chemistry:
1. Ammonium cyanate is:
a. Organic compound
b. Inorganic compound
c. Both
d. None of these
2. The chemist who synthesized urea from ammonium cyanate is:
a. Wholer
b. Berzelius
c. Lavoisier
d. Koble
3. Vital force theory was rejected by:
a. Scientists of the century
b. G.N. Lewis
c. Greek philosopher
d. F. Wholer
4. The best source of organic compound is:
a. Minerals
b. Coal
c. Animals
d. Stones
5. First organic compound synthesized in laboratory was:
a. Acetic acid
b. Ester
c. Pyridene
d. Urea
6. The compounds obtains from living things plans or animals were considered as:
a. Inorganic compounds
b. Complexes
c. Hydrocarbons
d. Organic compounds
7. The compounds obtains from non-living or mineral sources were considered as:
a. Inorganic compounds
b. Salts
c. Organometallic compounds
d. Complexes
8. Which behave failed the early chemists in synthesizing organic compounds?
a. Vital force present in living things is required to synthesizing
b. Organic compounds could be prepared by and within living things
c. Organic compounds could never be synthesizing of organic compounds
d. All of given
9. Which one of the following statement does not agree with vital force theory:
a. A spiritual force called vital force is responsible for the synthesis of organic compounds within living things
b. Organic compounds cannot be synthesized from inorganic compounds
c. It is the laziness the chemist, which is preventing them from synthesis of organic compounds
d. Living things are factories for the synthesize of organic compound
10. According to modern definition organic chemistry is that branch of chemistry , which deals with study of?
a. Hydrocarbons and their derivatives
b. Carbon compounds only
c. Carbohydrates and their derivative
d. Carbohydrates and hydrocarbons
11. Which one of the following correctly gives formula of starch?
a. (C6H10O5)n
b. (C6H5O10)n
c. (C5H10O6)n
d. (C6H5O5)n
12. Which one of the following is very common phenomenon in organic compounds?
a. Isomerism
b. Isomorphism
c. Polymerization
d. Polymorphism
13. The compounds which have same molecular formulas but differ in their structural formulas are called:
a. Dimers
b. Polymers
c. Monomers
d. Isomers
14. Which factor is responsible for the slowness of the organic reactions?
a. Molecular nature
b. Ionic nature
c. Polar nature
d. Simple nature
15. How many organic compounds are known at prsent?
a. Millions
b. Thousands
c. Billions
d. Trillions
16. The self-linking property of carbon is called:
a. Catenation
b. Association
c. Cyclization
d. Polymerization
17. Organic compounds are generally:
a. Ionic compounds
b. Complex compounds
c. Polymers
d. Covalent compounds
18. Which coal has maximum %age of carbon;
a. Lignite
b. Peat
c. Anthracite 19.1 coal is
d. Bituminous
19. Produced after long time decay of:
a. Fossil fuels
b. Plants
c. Wood
d. All
20. Petroleum coal and natural gas are called:
a. Natural gas
b. Marsh gas
c. Domestic gas
d. All of these
21. How many millions years age, coal had formed from the remains of the trees buried inside the earth crust:
a. 600
b. 500
c. 300
d. 400
22. The color of coal is:
a. Brownish black
b. Brown
c. Blue
d. Black
23. What type of action is responsible for the conversion of wood, dead plants and trees into peat?
a. Temperature and pressure
b. Bacterial action
c. Both bacterial and chemical action
d. Chemical action
24. Which one of the following is an important solid fuel?
a. Coke
b. Coal
c. Trees and plants
d. Coal tar
25. The process of thermal decomposition of coal in the absence of air is called:
a. Destructive distillation
b. Fractional distillation
c. Carbonization
d. Both a and c