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Online Tests
Chemistry 10th Class English Medium Unit 12 Online Test MCQs With Answers
Question # 1
Carbon Tetra chloride is used in .
Choose an answer
Fertilizer
Dry cleaning
Metallurgy
Anesthesia
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Question # 2
Dehydrohalogenation takes place in the presence of .
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NaOH aqueous
Alcoholic KOH
Aqeous KOH
Alcoholic NaOH
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Question # 3
Marsh gas is mostly :
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ethane
methane
butane
propane
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Question # 4
In shoe polished, which chemical is used.
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Ethanol
Methanol
Carbon black
Formaldehyde
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Question # 5
Hydrogenation of vegetable oil to convert it into banaspatic ghee is carried out in the presence of catalyst:
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Ni-metal
Zn-metal
Na - Metal
Fe2O3
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Question # 6
Which hydrocarbon molecule would have no effect on the aqueous solution of bromine?
Choose an answer
CH
4
C
10
H
20
C
2
H
4
C
2
H
2
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Question # 7
Chloroform is used for
Choose an answer
Anesthesia
Fever
Link
Toys
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Question # 8
Incomplete combustion of alkanes produce.
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Carbon dixoide only
Carbon monoxide only
Carbon monoxide carbon black and water
Carbon dioxide and carbon black
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Question # 9
Chemical formula of chloroform is :
Choose an answer
CH
2
Cl
2
CH
3
Cl
CHCl
3
CCl
4
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Question # 10
Which of one of the following is used as as fumigant:
Choose an answer
Ethyl alcohol
ethylene oxide
ethylene glycol
diethyl ether
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Question # 11
One of the hydrocarbons reacts with one mole of hydrogen to form a saturated hydrocarbon. What is the formula could be of the x:
Choose an answer
C
3
H
8
C
6
H
12
C
4
H
10
C
2
H
16
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Question # 12
Volatility of hydrocarbons deceases with:
Choose an answer
decrease of molecular mass
increase of molecular mass
increase of double or triple bonds
decrease of triple bonds
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Question # 13
A hydrocarbon has molecular formula C
8
H
14
. What is the molecular formula of the next number of the same homologous series.
Choose an answer
C
9
H
18
C
9
H
16
C
9
H
20
C
9
H
12
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