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Chemistry General Science Test Medium Mode MCQs With Answers
Question # 1
Which of the following is synthetic thermoplastic polymer
Choose an answer
PVC
Bakelite
Synthetic varnishes
Both b & c
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Question # 2
Cellulose is formed from
Choose an answer
D-galactose units
50% of D-glucose and 50% of L-glucose units
L-glucose units
D-glucose units
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Question # 3
Buffer solutions are used in except
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Clinical analysis
Nutrition
Soil science
Qualitative analysis
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Question # 4
Polysaccharides are
Choose an answer
Polyester
Polyamides
Poly ethers
Polynucleotide
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Question # 5
The temperature in the incineration of industrial and hazardons waster process had a range:
Choose an answer
950 to 1300°C
500 to 900°C
250 to 500°C
900 to 1000°C
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Question # 6
Boiling point of water is higher (100
°C) than that of ethanol (78.5
°C) although both have hydrogen bonding. This is because
Choose an answer
water molecules are closely packed
water is more acidic than ethanol
ethanol is an organic liquid
number of hydrogen bonds are more in H
2
O
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Question # 7
The specifie substance (metabolite) that fits on the enzyme surface and is converted to products is called
Choose an answer
Co-factor
Isoenzyme
Prosthetic group
Substrate
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Question # 8
lonic solids are characterized by which one of the following properties
Choose an answer
moderately low pressure
high vapour pressure
good conductivity in solid state
solubility in polar solvents
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Question # 9
An ideal gas, obeying Kinetic theory of gases cannot be liquified, because
Choose an answer
its critical temperature is above 0°C
its molecules are relatively small in size
It solidifies before becoming a liquid
Forces acting between its molecules are negligible
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Question # 10
The number paper industries in Pakistan are:
Choose an answer
30
25
35
20
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Question # 11
Which of the following is the unit for pressure of a gas in system international
Choose an answer
Nm
-2
mm of Hg
atmosphere
torrr
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Question # 12
A 4f orbital has
Choose an answer
one node
two node
three node
four nodes
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Question # 13
Which of the following metals is sometimes found in native state in nature?
Choose an answer
Al
Cu
Fe
Mg
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Question # 14
Heat absorbed by a system when its volume does not change is equal to
Choose an answer
Internal energy of system
Enthalpy of system
Increase in internal energy of system
Increase in enthalpy of system
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Question # 15
Energy can neither be created nor destroyed, although it can be transformed from one form to another. This is a statement of
Choose an answer
Law of conservation of matter
Law of definite proportions
Law of conservation of energy
None of these
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Question # 16
The equation for the first ionization energy of hydrogen is
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Question # 17
Ionization energies increase from left to right along the period due to
Choose an answer
Increase in nuclear charge
Repulsion of electron increases
Repulsion of protons increase
Atomic size increase along the period
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Question # 18
Rearrangement of an oxime to an amide in the presence of strong acid is called
Choose an answer
Curtius rearrangement
Fries rearrangement
Beckman rearrangement
Aldol condensation
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Question # 19
The fibre which is made from vinylidine chloride polymer is called
Choose an answer
Rayon fibre
Azlon fibre
Acetate fibre
Saran fibre
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Question # 20
Which of the following is responsible for depletion of the ozone layer in the upper strata of the atmosphere?
Choose an answer
Fullerences
Freons
Polyhalogens
Ferrocene
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Question # 21
Which of the following alcohols cannot be produced by treatment of aldehydes or ketones with NaBH
4
or LiAIH
4
?
Choose an answer
1-propanol
2-propanol
2-Methyl-2-propanol
Ethanol
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Question # 22
Addition of iron fillings to CuSO
4
solution caused precipitation of Cu owing to the
Choose an answer
Reduction of Cu
2+
Oxidation of Cu
2+
Reduction of Fe
Reduction of Fe
3+
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