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Online Tests
Chemistry 10th Class English Medium Online Test MCQs With Answers
Question # 1
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 # 2
Identify which one of the following compounds is a ketron?
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(CH
3
)
2
CHOH
(CH
3
)
2
CHCl
(CH
3
)
2
CO
(CH
3
)
2
CHCl
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Question # 3
Which of following is not conjugate base.
Choose an answer
S
-2
F
-1
Na
+
SO
4
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Question # 4
Which type of reactions take place in both directions?
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Addition reactions
Reversible reactions
Irreversibel reactions
Decomposition reactions
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Question # 5
The water which produces good lather with soap is called:
Choose an answer
soft water
hard water
heavy water
typical water
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Question # 6
Which of following dehydration of alcohols take place:
Choose an answer
NaOH
KOH
H
2
SO
4
HCl
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Question # 7
Blonde hair contains compound of.
Choose an answer
Iron
Copper
titanium
Molybdenum
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Question # 8
The recombination of O and O
2
in mid stratosphere is an
Choose an answer
Exothermic reaction
Endothermic reaction
Heat absorbing process
None of these
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Question # 9
According to Arrhenius concept acid is a substance which dissociates in aqueous solution to give.
Choose an answer
Hydrogen ions
Hydroxide ions
Both a and b
None of these
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Question # 10
99% of atmosphere consists of .
Choose an answer
N
2
and H
2
N
2
and O
2
N
2
and CO
2
O
2
and CO
2
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Question # 11
Which gas is used to prepare ammonia?
Choose an answer
N
2
O
2
Cl
2
S
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Question # 12
Which one is not an Arrhenius base?
Choose an answer
NaOH
KOH
Ca(OH)
2
NH
3
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Question # 13
The acid which is called king of chemicals.
Choose an answer
Sulphuric Acid
Nitric Acid
Hydrochloric acid
Acetic acid
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