MC inQs WITH SOLVED ANSWERS
CARBON AND ITS COMPOUNDS
1. The electronic configuration of carbon atom is:
a) 2,5
b) 2,4
c) 2,3
d) 3,4
Answer
Answer: b) 2,4
2. The valency of carbon atom is:
a) 4
b) 2
c) 3
d) 1
Answer
a) 4
3. A covalent bond is formed by:
a) losing electrons
b) gaining electrons
c) both losing and gaining electrons
d) sharing of electrons
Answer
d) sharing of electrons
4. Compounds made up of hydrogen and carbon are called
a) hydocarbon
b) hydrocarbon
c) carbohydro
d) carbonate
Answer
b) hydrocarbon
5. Number of carbon atoms present in butane is:
a) 3
b) 2
c) 4
d) 1
Answer
c) 4
6. Detergents are sodium or potassium salts of long chain of:
a) carboxylic acids
b) sulphonic acids
c) aldehydes
d) stearic acids
Answer
b) sulphonic acids
7. Which one of the following is not an allotrope of carbon:
a) diamond
b) graphite
c) Fullerene
d) gold
Answer
d) gold
8. The property of self combination of the atoms of the same element to form long chain is known as:
a) protonation
b) carbonation
c) coronation
d) catenation
Answer
d) catenation
9. A cyclic hydrocarbon having carbon -carbon single bonds as well as carbon -carbon double bonds in its molecule is:
a) C6H14
b) C6 H12
c) C6H6
d) C6H10
Answer
c) C6H6
10. The pencil leads are made up of mainly:
a) charcoal
b) Lead
c) lithium
d) graphite
Answer
d) graphite
11. The number of isomers formed by the hydrocarbon with molecular formula C5H12 is:
a) 2
b) 3
c) 5
d) 4
Answer
b) 3
12. The number of carbon atoms present in the molecule of fifth member of the homologous series of alkynes is:
a) 4
b) 5
c) 6
d) 7
Answer
c) 6
13. The functional group which always occurs in the middle of a carbon chain is:
a) ketone group
b) aldehyde group
c) carboxyl group
d) alcohol group
Answer
a) ketone group
14. Which one of the following is not a fossil fuel?
a) coke
b) charcoal
c) petrol
d) coal
Answer
c) charcoal
15. Butanone is a four-carbon compound having the functional group:
a) -COOH
b) -CHO
c) -CO-
d) -OH
Answer
c) -CO-
16. The functional group present in propanal is:
a) -CHO
b) -CO-
c) -OH
d) -COOH
Answer
a) -CHO
17. The molecular formula of ethanol is:
a) C2H3OH
b) C2H5OH
c) C3H5OH
d) C2H7OH
Answer
b) C3H5OH
18. One among the following burns without producing a flame:
a) wood
b) candle
c) LPG
d) charcoal
Answer
d) charcoal
19. If the bottom of the utensil gets blackened on the outside while cooking it means that:
a) the fuel is burning completely
b) the fuel is not burning completely
c) utensil can't bear the heat
d) food is not cooked completely
Answer
b) the fuel is not burning completely
20. The soap molecule has a:
a) hydrophilic head and hydrophobic tail
b) hydrophobic head and hydrophilic tail
c) hydrophobic head and hydrophobic tail
d) hydrophilic head and hydrophilic tail
Answer
a) hydrophilic head and hydrophobic tail
21. Chlorine reacts with saturated hydrocarbons at room temperature in the
a) absence of sunlight
b) absence of moisture
c) presence of moisture
d) presence of sunlight
Answer
d) presence of sunlight
22. The disease caused by the excessive drinking of alcohol over a long period of time is:
a) cataract
b) cirrhosis
c) diabetes
d) arthritis
Answer
b) cirrhosis
23. In a soap micelle the soap molecules are arranged radially with:
a) ionic ends directed towards the centre and hydrocarbon ends directed outwards
b) hydrocarbon ends directed towards the centre and ionic ends directed outwards
c) both ionic ends and hydrocarbon ends directed towards the center
d) both hydrocarbon ends and ionic ends directed outwards
Answer
b) hydrocarbon ends directed towards the centre and ionic ends directed outwards
24. The structure of propanoic acid is:
Answer
25. The electron dot structure of ethene molecule is:
Answer
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