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Online Tests
Chemistry General Science Test Hard Mode MCQs With Answers
Question # 1
Which of the following is an example of body centred cube?
Choose an answer
Magnesium
Zinc
Copper
Sodium
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Question # 2
Maximum number of active hydrogens are present in
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Acetic-acid
Glycerol
Methane
Methanol
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Question # 3
Gooch crucible is used for the filtration of precipitates having
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High solubility
High concentration
High ignition temperature
Low temperature
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Question # 4
Reaction of acids with alcohols is also known as
Choose an answer
Esterification
Saponification
Alkalization
None
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Question # 5
The last orbit of argon would have electrons
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8
18
2
6
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Question # 6
ΔH
Neutralisation
is always
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Positive
Negative
Zero
Positive or negative
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Question # 7
The equilibrium
Cr
2
O
2-
7
2CrO
2
4
is shifted to right in
Choose an answer
An acidic medium
A basic medium
A neutral medium
It does not exist
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Question # 8
Dilute hydrochloric acid solution cannot be concentrated by boiling beyond
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11%
33%
44%
22%
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Question # 9
Which of the following with aqueous KOH will give acetaldehyde?
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1,2-Dichloroethane
1, 1-Dichloroethane
Chloroacetic acid
Ethyl chloride
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Question # 10
BiCI
3
on hydrolysis forms a white precipitate of
Choose an answer
Bismuthio is acid
Bismuth oxychloride
Bismuth pentachloride
Bismuth hydroxide
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Question # 11
The disaccharide present in milk is
Choose an answer
Sucrose
Maltose
Lactose
Cellobiose
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Question # 12
Sea weeds are important source of
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Iron
Chlorine
Iodine
Bromine
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Question # 13
Among alkali metal salts, the lithium salts are the poorest conductors of electricity in aqueous solution because of
Choose an answer
Easy diffusion of Li
+
ions
Lower ability of Li
+
ions to polarize water molecules
Lowest charge to radius ratio
Higher degree of hydration of Li
+
ions
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Question # 14
What happens when isotonic solution of a (mol. wt. 342) and B (mol. wt 60) are put in to communication through semiperme-able membrane?
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Transference of solvent from solution A to that of B take place
Transference of solvent from solution B to that of A takes place
No transference of solvent from solution A to that of B takes place
Change in temperature of solutions takes place.
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Question # 15
The IUPAC name of the compound having the formula (CH
3
)
3
C - CH = CH
2
is
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1, 1-Dimethyl-3-butene
1, 1, 1-Trimethyl-3-propene
3, 3,-Dimethyl-1-butene
3, 3, 3,-Trimethyl-1-propene
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Question # 16
A zero order reaction is one whose rate is independent of
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Temperature of the reaction
The concentration of the reactants
The concentration of the products
The material of the vessel in which the reaction is carried out
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Question # 17
Heating a micture of sodium benzoate and soda lime gives
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Benzene
Methane
Sodium benzoate
Calcium benzoate
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Question # 18
Setting of cement is an
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Exothermic reaction
Endothermic reaction
Neither exothermic nor endothermic
None
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Question # 19
Bell metal is an alloy of
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Cu, Zn and Sn
Cu, Zn and Ni
Cu and Zn
Cu and Sn
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Question # 20
Red lead is
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PbO
Pb
3
O
4
PbO
2
Pb
4
O
3
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Question # 21
The addition of HBr is easiest with
Choose an answer
CH2 = CHCl
CICH = CHCl
CH3 - CH = CH2
(CH3)2 C = CH2
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Question # 22
Tollen's reagent is
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Ammonical cuprous chloride
Ammonical cuprous oxide
Ammonical silver bromide
Ammonical silver nitrate
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