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Online Tests
Chemistry General Science Test Medium Mode MCQs With Answers
Question # 1
Which of the following is not an inorganic macromolecule
Choose an answer
Graphite
Sand
Strach
Diamond
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Question # 2
Terylen fibre is made by reaction of terephthalic acid with
Choose an answer
ethylene
ethylene glycol
glycol
terylene
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Question # 3
Volcanoes produce SO
2
:
Choose an answer
47%
57%
67%
77%
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Question # 4
Which factor is helping to reduce the environmental pollution:
Choose an answer
urbanization
industrialization
increases of plantation
rapid growth of population
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Question # 5
The question vapour cause by heating a liquid is due to:
Choose an answer
increase of intermolecular interactions
increase of K.E of molecules
decrease of surface tension
increase in potential energy of molecules
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Question # 6
Acidification of soil can leach metal:
Choose an answer
Al
Hg
Pb
Ca
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Question # 7
H2O and HF are the hydrides of the second period. Fluorine is more electronegative than oxygen. Anyhow, the boiling point of water is greater than that of HF. This is due to:
Choose an answer
water is more polar than HF
water has a bent structure
HF has a zig zag structure after making hydrogen bonding
the number of hydrogen bonds produced by water are greater than that of HF
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Question # 8
Which of the following is not a property of enzymes?
Choose an answer
extraordinary speciffcity
reversibility of reactions
high efficiency
minimum activity at optimum T
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Question # 9
Velaric acid is obtained from a herb velarian, its IUPAC name is
Choose an answer
Propionic acid
Pentanoic acid
Butyric acid
Caporic acid
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Question # 10
Elements of group IV-A are
Choose an answer
neither strongly electropositive nor strongly electronegative
strongly electropositive
strongly electronegative
none of these
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Question # 11
What will be the ratio of volume of equal masses of O
2
, H
2
and CH
4
kept in same container under same conditions
Choose an answer
2 : 16 : 2
1 : 16 : 2
2 : 16 : 1
1 : 2 : 1
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Question # 12
German silver does not contain
Choose an answer
Cu
Zn
Ni
Mn
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Question # 13
K,Ca and Li metals may be arranged in decreasing order of their reduction potential as :
Choose an answer
Li, k, Ca
Ca, K, Li
Li, Ca, K
K, Ca, Li
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Question # 14
Condensation of aldeydes with
α-hydrogen gives:
Choose an answer
Acetal
Ketal
Aldol
Cannizzaro product
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Question # 15
Choose an answer
8 g
16 g
32 g
24 g
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Question # 16
Rate law of an equation is obtained :
Choose an answer
From a balance equation.
Can be calculated theoretically as well as determined experimentally.
It is only calculated theoretically.
Experimentally.
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Question # 17
The number of elements in the 4th periods of periodic table is
Choose an answer
8
10
18
32
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Question # 18
Bohr model of atom is contradicted by:
Choose an answer
Planck's quantum theory
Pauli's exclusion theory
Heisenberg's uncertainty principle.
All of above.
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Question # 19
What is the name of the comlex [Ni(CO)
4
]
Choose an answer
Tetracarbonylnickel (o)
Tetracabonylnickel
Tetracabonylnickel (II)
Tetracabonylnickel (IV)
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Question # 20
Acetone is prepared by
Choose an answer
Oxidation of n-propyl alcohol
Oxidation of acetaldehyde
Pyrolysis of calcium acetate
Pyrolysis of calcium acetate as well as acetic acid
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Question # 21
Two different hydrocarbon each contain the same percentage by mass of hydrogen. It follows that they have the same
Choose an answer
Empirical formula
Number of atoms in a molecules
Number of isomers
Relative molecular mass
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Question # 22
Acetone reacts with HCN to form a cyanohydrin. It is an example of
Choose an answer
Electrophilic addition
Electrophilic substitution
Nucleophilic addition
Nucleophilic substitution
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