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Online Tests
Chemistry General Science Test Hard Mode MCQs With Answers
Question # 1
Which of the following has greatest reducing power?
Choose an answer
HI
Hbr
HCI
HI
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Question # 2
AI is more reactive than Fe but AI is less easily corroded than Fe Because
Choose an answer
It is a noble metal
Oxygen forms a protective reaction easily with water
Iron undergoes reaction easily with water
Fe form mono and divalent ions.
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Question # 3
Salol is prepared from
Choose an answer
Salicylic acid and phenol
Salicylic acid and methyl alcohol
Both
None
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Question # 4
The weight of 11.2 liters of CO
2
at S.T.P. would be
Choose an answer
88 g
44 g
32 g
22 g
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Question # 5
Inert pair effect plays an important role in case of
Choose an answer
F
AI
Si
TI
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Question # 6
Ammonia gas used directly as a fertilizer is injected into the soil at a depth of about
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Two inches
Three inches
Five inches
Six inches
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Question # 7
The principle constituent of pyrex glass is
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Zn
B
Pb
CI
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Question # 8
Ethanol containing some methanol is called
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Absolute spirit
Rectified spriit
Power alcohol
Methylated spirit
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Question # 9
Heating a mixture of sodium benzoate and soda lime gives
Choose an answer
Methane
Benzene
Sodium benzene
Calcium benzoate
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Question # 10
Which one of the following has the lowest boiling point?
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B
AI
Ga
Ti
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Question # 11
Detergents are
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Synthetic products
Natural products
Both A and B
None of the above
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Question # 12
ΔH
neutralisation
is always
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positive
Negative
Zero
Positive or negative
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Question # 13
Which of the following geometry is associated with the compound in which the central atom assumes sp
3
d hybridization?
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Planar
Pyramidal
Angular
Trigonal bipyramidal
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Question # 14
An endothermic reaction is one in which the reacting substances
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Have more energy than the products
Have less energy than the products
Have the same energy as the products
Are at a higher temperature than the products.
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Question # 15
The most reactive compound for electrophilic nitration will be
Choose an answer
Benzyl chloride
Benzoic acid
Nitrobenzene
Chlorobenzene
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Question # 16
Evaporation of water is
Choose an answer
An exothermic change
an endothermic change
A process where no heat changes occur
A process accompanied by chemical reaction.
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Question # 17
BiCl
3
on hydrolysis forms a white precipitate of
Choose an answer
Bismuthio acid
Bismuth oxychloride
Bismuth pentachloride
Bismuth hydroxide.
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Question # 18
Among the alkaline earth metals the element forming predominantly covalent compounds is
Choose an answer
Be
Mg
Sr
Calcium
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Question # 19
The alkali metal which is liquid at 15
°C is
Choose an answer
K
Cs
Na
None
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Question # 20
When quantity of electricity passed is one faraday then the mass deposited at the electrode is equal to
Choose an answer
One gm. atomic weight
One gm. equivalent weight
Electrochemical equivalent
None of the above
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Question # 21
White P when boiled with strong solution of caustic soda produces
Choose an answer
Phosphine
Posh acid
Phosphorous acid
None
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Question # 22
Which is not a a colligative property?
Choose an answer
Osmotic pressure
Lowering of vapour pressure
Depression of freezing point
Elevation of boiling point
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