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PPSC Chemistry Full Book Test MCQs With Answers
Question # 1
Which of the following species have undistributed octahedral structure.
Choose an answer
SF6
PF6
Si F
6
2-
XeF6
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Question # 2
Which of the following is not a component of a gas chromatography system.
Choose an answer
Carrier gas
Capillary column
Packed column
Cathode lamp
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Question # 3
Amorphous boron on burning in air form
Choose an answer
B(OH)3
Only B2O3
Only BN
Mixture of B2O3 and BN
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Question # 4
Which of the following gas is lightest.
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Dihydrogen
Helium
Dinitrogen
Dioxygen
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Question # 5
The steroid which plays an important role in carbohydrate metabolism is.
Choose an answer
Oestrone
Progestrrone.
Androsterone
Cortisone
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Question # 6
Glass industry requires soda ash with
Choose an answer
Solids density 1.91 and bulk density 1.0
Solids density 1.86 and bulk density 0.6
Solid density 1.80 and bulk density 0.58
All of above
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Question # 7
Which of the following statement is not true with respect to photo chemical reactions.
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These take place in the presence of light
Free energy of these reactions may be positive or negative
Light intensity affect these reactions
Temperature has significant affect n rate of these reactions
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Question # 8
During the last two centuries, the atmospheric CO2 contents are increased by
Choose an answer
15%
25%
35%
50%
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Question # 9
Alkaline hydrolysis of chloroform produces.
Choose an answer
HCCO
HCOO - + CO
H3COH
CHCL2 OH
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Question # 10
Who coined the word nanotechnology.
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Eric Drexler
Richard Feynamann
Sumio tijma
Richard smalley
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Question # 11
Which is the following is not a buffer.
Choose an answer
H2CO3/HCO3
NH4Cl/NH4OH
CH3COOH/CH3COONa
NH3OH/CH3COOH
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Question # 12
Which of the following play significant role in depletion of ozone layer.
Choose an answer
Oxides of nitrogen
Oxides of carbon
Oxides of sulphur
None of above
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Question # 13
The alternate feasible fuel for existence of mankind to
Choose an answer
Uranium
Wood
Bontonite
Cloth residues
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Question # 14
Which of the following is not an extensive property.
Choose an answer
Work
Entropy
Free energy
Volume
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Question # 15
Which of the following compound will be optically active.
Choose an answer
Suceinic acid
Meso tartaric acid
Acetic acid
Lactic acid
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Question # 16
Pick out the incorrect statement for Xe F6
Choose an answer
XeF6 is hydrolyzed practically to form XeOF4
It reacts with SiO2 to form Xe F4
On complete hydrolysis, it forms XeO3
It acts as F acceptor when treated with alkali metal fluoride, but cannot act as F donor to form complexes.
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Question # 17
Which of the following is not a characteristics of terpenoids.
Choose an answer
They are pleasant smelling liquids
They are steam volatile
They are nitrogenous bases
they are insoluble in water
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Question # 18
Which of the following technique is used for separation of volatile components.
Choose an answer
GC
HPLC
FPLC
TLC
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Question # 19
Bitumen is used in
Choose an answer
Electric generators
Road surfacing
Coal tar
All of above
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Question # 20
Which of the following is not an organic precipitating agent.
Choose an answer
Diemethglyoxime
Cuperon
Oxime
Acetate
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Question # 21
Which metal burns in air at high temperature with the evolution of much heat.
Choose an answer
Cu
Hg
Pb
Al
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Question # 22
The atomic and ionic radii value on moving from left to right in the sereis.
Choose an answer
Increase
Decrease
Does not change
None of above
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Question # 23
On the basic of CFT the bonding between the metal and ligand is totally
Choose an answer
Ionic
Covalent
Coordinate
Metallic
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Question # 24
Which of the following compounds does not show dipole moment.
Choose an answer
CH3OH
HBr
CCl4
CHCl3
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Question # 25
Which substance has the greatest lattice energy.
Choose an answer
CuBr
MgO
KI
NaF
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Question # 26
Commercial incinerators produce.
Choose an answer
Smoke
CO
NOx
All above
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Question # 27
Earth is protected from U.V. radiations by
Choose an answer
Carbon dioxide layer
Oxygen layer
Ozone layer
Troposphere
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Question # 28
The aluminium salt commonly used to stop bleeding is
Choose an answer
Aluminium sulphate
Potash Alum
Aluminium chloride
Aluminium fluroide
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Question # 29
Molecular weight of proteins may be determined by
Choose an answer
Osmotic pressure measurements
Sedimentation methods
Light scattering methods
All of these
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Question # 30
A diameter of human hair is approximately ________________ m
Choose an answer
75000
75
7.5 x 10
-5
7.5 x 10
-9
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Question # 31
Which of the following hydroxide is getatinous in nature.
Choose an answer
Fe(OH)3
Al(OH)3
Ca(OH)3
Cr (OH)3
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