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Chemistry General Science Test Medium Mode MCQs With Answers
Question # 1
Which of the followings has electronic configuration of Ar in +3 oxidation state
Choose an answer
Sc
Mn
Ti
Zn
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Question # 2
An instrument which is used to measure the pressure of a gas is called:
Choose an answer
barometer
photometer
stalagmometer
viscometer
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Question # 3
NH
3
can form only one hydrogen bond per molecule though it has three partially positively charged hydrogens
Choose an answer
nitrogen in NH
3
has only one ions pair of electrons which can make one H-bond
ammonia is a base
ammonia is a weak acid
it ionizes to give one H
+
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Question # 4
Components of environment is (in km) around the earth:
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10 km
100 km
1000 km
1500 km
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Question # 5
The existing property of an element in to more than are crystalline state is termed as:
Choose an answer
isomorphism
polymorphism
isotropy
allotropy
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Question # 6
Which of the following are thermoplastic materials?
Choose an answer
PVC
polystyrenes
polyethylene
all these
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Question # 7
Which of the substance is not going to react the sodium metal:
Choose an answer
Acetic acid
Methanol
Di methyl ether
Ethanol
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Question # 8
For which mechanisms, the first step involved is the same
Choose an answer
E1 and E2
E2 and SN2
E2 and E1
E1 and SN1
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Question # 9
Molar volume of CO
2
is maximum at
Choose an answer
NTP
0°C and 2.0 atm
127°C and 1 atm
273°C and 2.0 atm
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Question # 10
Enthalpy of neutralization (∆H°n) per mole of H2SO4/ Ba(OH)2 is
Choose an answer
+57.4 kJmol-1
-114.8 kJmol-1
-57.4 kJmol-1
-57.4 kJmol-1
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Question # 11
Carbon Monoxide is:
Choose an answer
colouriess
orderless
high toxic
All of these
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Question # 12
A standard hydrogen electrode is used as standard electrode of which electrode potential is arbitrarily taken as
Choose an answer
+1
-1
0.1
Zero
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Question # 13
Use of ethanol as:
Choose an answer
Drink
Solvent and fuel
In beverage
All of these
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Question # 14
Which of the following elements is not present abundantly in earth's crust?
Choose an answer
Silicon
Aluminium
Sodium
Oxygen
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Question # 15
The coinage metals are
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Ni, Pd, Pt
Cu, Ag, Au
Zn, Al, Pb
Fe, Si, Sn
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Question # 16
Which bond is most stable
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C - Cl
C - F
C - Br
C - I
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Question # 17
Grignard reagent is prepared by the reaction of magnesium metal with alkyl halide in the presence of
Choose an answer
Alcohol
Water
Suephuric acid
Dry ether
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Question # 18
Reaction of ethylamine with chloroform in alcoholic KOH produces
Choose an answer
CH
3
OH
CH
3
NC
C
2
H
5
NC
C
2
H
5
CN
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Question # 19
The toxic organic compounds and heavy metals and metalloids results in contamination of
Choose an answer
Surface water
Ground water
Both surface and ground water
Neither surface nor ground waters
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Question # 20
which enzyme is not involved in the fermentation of starch ?
Choose an answer
Diastase
Zymase
Urease
Invertase
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Question # 21
In the ground state of an atom, the electron is present:
Choose an answer
In the nucleus.
In the second shell.
Nearest to the nucleus.
farthest from the nucleus.
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Question # 22
There are 20
α
-amino acids found in protein 19 have -- NH
2
as the amino group. Only one of the
α
-amino acids has a secondary amino group which one is this
Choose an answer
Glycine
Lysine
Proline
Cystein
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