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Carbon and its Compounds

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Carbon and its Compounds

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Question 1
The force of attraction that exists between the carbon atoms in graphite is ................
A
strong electrostatic forces of attraction
B
strong vander Waals force of attraction
C
weak vander Waals force of repulsion
D
weak vander Waals force of attraction
Question 2
Carbon compounds are stable due to ......................
A
its electronic configuration
B
its tendency to show isomerism
C
its small size
D
its ability to combine with non metals
Question 3
Choose the correct statement ................
A
The tendency of carbon atom to form covalent bonds with other carbon atoms is known as catenation
B
Carbon can form C+4 and C-4 ions
C
The valency of carbon is always four
D
The hardness of diamond is due to the weak vander waals force that exist between carbon atoms
Question 4
Which of the following form a set of homologous series?
A
ethane, methane, propene
B
ethane, methane, ethane
C
ethyne, propyne, but-l-yne
D
ethyne, propyne, but-l-ene
Question 5
Which of the following represent the functional group ‘alcohols’ ...................
A
–CHO
B
CO
C
CHO
D
COOH
Question 6
The IUPAC name for CH3COCH3 is ....................
A
acetone
B
dimethyl ketone
C
propanone
D
propane
Question 7
A compound has the molecular formula C2H6O. The functional group present in the compound is ....................
A
–OH
B
CO
C
Cho
D
COOH
Question 8
Which of the following pairs of compounds are isomers?
A
ethane and methane
B
ethyne and propyne
C
but-l-ene and but-2-ene
D
acetylene and ethyne
Question 9
Four pairs of compounds are given below. Choose the pairs of compounds containing the same functional group ...................
A
Ethanol and ethanol
B
propane and propyne
C
propanol and propanoic acid
D
Methanol and butanol
Question 10
The IUPAC name for acetic acid is ......................
A
methanoic acid
B
ethanoic acid
C
propanoic acid
D
butanoic acid
Question 11
The conversion of ethanol to ethane is ..................
A
inter molecular dehydration
B
intra molecular dehydration
C
inter molecular hydration
D
oxidation
Question 12
CH3CH2OH  CH3CHO + H2. This reaction is known as ...................
A
esterification
B
dehydration
C
dehydrogenation
D
oxidation
Question 13
An example for decarboxylation reaction  is ...............
A
heating ethanoic acid with sodium hydroxide
B
heating sodium ethanoate with soda lime
C
treating glucose with zymase
D
heating ethanol with sodium
Question 14
Which of the following on heating liberate hydrogen gas?
  1. ethanol, 2. Acetic acid, 3. Methane,   4. Acetone
A
1 only
B
2 only
C
1 and 2 only
D
3 and 4
Question 15
Choose the alkyne from the following ..............
A
methane
B
ethane
C
ethane
D
acetylene
Question 16
Which of the following represent a pair of  unsaturated hydrocarbon?
A
ethane and ethyne
B
ethene and ethyne
C
methane and ethyne
D
acetic acid and formic acid
Question 17
An organic compound decolourises the bromine water. It may be .................
A
ethane
B
ethane
C
propane
D
butane
Question 18
Rectified spirit’ contains ....................
A
95% methanol and 5% water
B
95% ethanol and 5% water
C
15% ethanol and 95% water
D
50% ethanol and 50% water
Question 19
On heating ethanol with conc. H2SO4 at 443 K gives ............
A
ethane
B
ethane
C
ethyne
D
methane
Question 20
Molasses contain nitrogenous matter. If the nitrogen content of the molasses is poor during fermentation ....................... is added to fortify.
A
ammonium chloride
B
ammonium sulphate
C
yeast
D
sulphyric acid
Question 21
Ethanol on oxidation in the presence of alkaline potassium permanganate or acidified potassium dichromate gives the following acid ....................
A
propanoic acid
B
butanoic acid
C
methanoic acid
D
ethanoic acid
Question 22
The functional group of carboxylic acid is .....................
A
–OH
B
–CHO
C
>C = O
D
–COOH
Question 23
The term ‘organic chemistry’ was first used by the Swedish chemist ...................
A
Priestly
B
Berzelius
C
Hall
D
Dewer
Question 24
The scientist who first prepared urea from an inorganic compound ammonium cyanate is ..................
A
Wohler
B
Brovon
C
Berzelius
D
Mendeleev
Question 25
Kohinor diamond is a .................... carat diamond.
A
24
B
105
C
128
D
22
Question 26
Fullerene consists of ....................... carbon atoms.
A
4
B
32
C
48
D
60
Question 27
Ethanol when reacts with sodium gives .......................... gas.
A
hydrogen
B
methane
C
oxygen
D
stearm
Question 28
Percentage of sucrose in molasses is ......................
A
40%
B
60%
C
25%
D
30%
Question 29
The method of preparation of alcohol from molasses is .......................
A
esterification
B
fermentation
C
polymerisation
D
reduction
Question 30
The enzyme which helps in the conversion of glucose to ethanol is ................
A
sucrose
B
zymase
C
invertase
D
kirase
Question 31
.................... is a good conductor of electricity unlike other non-metals.
A
Diamond
B
Graphite
C
Nitrogen
D
Carbon
Question 32
Carbon compounds have low melting and boiling points because of the ........................ nature
A
covalent
B
ionic
C
coordinate
D
metallic
Question 33
The chemical properties of the members of the homologous series are ...................
A
different
B
similar
C
various
D
not similar
Question 34
The IUPAC name of the compound CH3 CH2 CH3 is ...................
A
methane
B
propane
C
n-butane
D
butane
Question 35
ROH is alkanol, therefore, CH3 CH2 OH is ........................
A
methanol
B
propanol
C
ethanol
D
ethanol
Question 36
A
A
B
B
C
C
D
D
Question 37
A
A
B
B
C
C
D
D
Question 38
A
A
B
B
C
C
D
D
Question 39
A
A
B
B
C
C
D
D
Question 40
A
A
B
B
C
C
D
D
Question 41
A
A
B
B
C
C
D
D
Question 42
A
A
B
B
C
C
D
D
Question 43
A
A
B
B
C
C
D
D
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There are 43 questions to complete.

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