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Chemistry General Science Test Medium Mode MCQs With Answers
Question # 1
Substances that render enzymes catalytically inactive are called
Choose an answer
coenzymes
substrates
inhibitors
apoezymes
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Question # 2
a hole used to dump the municipal wastes is called:
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landfill
effluents
leachate
inclneration
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Question # 3
Polarity of a molecule is expressed in terms of
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Bond strength
Dipole moment
Bond length
Shape
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Question # 4
What is the formula of silica?
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Si2O3
SiO2
Si3O4
SiO-
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Question # 5
Reason for the rancidity of fat is
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Low sponification
High reactivity of fat
Oxidation of fat
All
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Question # 6
Empirical formula of monosaccharide is
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(CHO)
n
CH
n
O
n+1
C
n
H
2
O
(CH
2
O)
n
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Question # 7
What is name of hydrated variety of quartz?
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Rose quartz
Smokey quartz
Silica
Opal
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Question # 8
Lithosphere has amount of silicon
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35.30%
27.72%
40.01%
21.13%
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Question # 9
N terminal of glutathione is
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Glycine
Cysteine
Glutamate
Aspartate
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Question # 10
The slope of the graph is steepest at the beginning of reaction showing
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Rapid decrease in concentration of reactants
Rapid increase in concentration of reactants
Fast rate of reaction
All of the above
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Question # 11
One Pascal is equal to
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1 Nm
-2
1 Nm
1 Nm
-1
1 Nm
2
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Question # 12
Reaction of Grignard's reagent with ketones gives: Reaction of Grignard's reagent with formaldehyde gives:
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Pri-alcohol
Sec-Alcohol
Ter-alcohol
Carboxylic
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Question # 13
The total number of orbitals possible for the quantum number n is
Choose an answer
n
n
2
2n
2n
2
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Question # 14
The unit rate of constan K is
mole
-1
dm
3
S
-1
for a chemical reaction, the order of reaction is :
Choose an answer
3
2
1
0
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Question # 15
An alkane is produced when an alkyle halide reacts with zinc in the presence of
Choose an answer
HCl
CH
3
COOH
Both a & b
None
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Question # 16
Detergents are
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Synthetic products
Natural products
Both (a) and (b)
None of these
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Question # 17
To purify water which has mud dissolved in it, A substance which coagulates the suspended particles is used. The coagulant may be
Choose an answer
Ag
+
Cu
2+
Al
3+
Si
4+
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Question # 18
Bronze is an alloy of Cu and
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Zn
As
Sb
Sn
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Question # 19
A cell constant is generally found by measuring the conductivity of aqueous solution of
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BaCl
2
KCl
NaCl
MgCl
2
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Question # 20
If the difference of pKa values of the two acids is 2, then
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Acid with smaller pKa is 10 times stronger acid
Acid with greater pKa is 10 times stronger acid
Acid with smaller pKa is 100 times stronger acid
Acid with greater pKa is 100 times stronger acid
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Question # 21
The Zwitter ion is also called
Choose an answer
International salt
Internal salt
No salt
None of these
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Question # 22
The treatment of benzene with isobutene in the presence of sulphuric acid give
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isobutyl benzene
tert-Butyl benzene
n- Butyl benzene
no reaction
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