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PPSC Chemistry Full Book Test MCQs With Answers
Question # 1
The reverse of photo chemical reaction is called.
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Phosphorescence
Chemiluminescence
Fluorescence
Photscnaitization
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Question # 2
The pink colour of phenolphthalen in in basic medium is due to the
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Cationic form
Anionic form
Natural form
OH- ions of the base
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Question # 3
__________ are the extensions of bucky balls.
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Goodesic domes
Hexagons
Carbon nanotubes
AFM and STM
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Question # 4
Which of the following functional groups is not involved in ion exchange chromatography.
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Weak acids
Strong acids
Strong bases
Carbohydrates
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Question # 5
Which of the following process is used for the conversion of matte is to nickel.
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Orford process
Mond's process
Electrolytio process
All
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Question # 6
Which of the following is not an alum.
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KAI (SO4)3 12 H2O
NaAI (SO4)2 12 H2O
NH4Fe (SO4)2 12H2O
FeAl (SO4)2 . 12 H2O
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Question # 7
Monomer of neoprene rubber to
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1-chloro 1,3- butadiene
2- chlro, 1,3-butadiene
2-Bromo -1,3- butadiene
2-Methyl 1,3-butadiene
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Question # 8
The main active contaminants of nuclear reactors are.
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Co- 60
Mn -54
Sr-60
All above
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Question # 9
Which of the following is most soluble in water.
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BaSO4
Sr SO4
CaSO4
MgSO4
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Question # 10
The bond order for BO molecule is.
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2.5
3.0
2.0
3.5
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Question # 11
On the basic of CFT the bonding between the metal and ligand is totally
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Ionic
Covalent
Coordinate
Metallic
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Question # 12
The pH Value 4.2 is of
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Vinegar
Lemons
Oranges
Tomatoes
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Question # 13
Which of the following substance has been advocated as fuel of future.
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O2
N2
H2
H2O
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Question # 14
If there are only two components in a solution with mole fraction X
A
and X
B
then which of the following relation is correct.
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X
A
+ X
B
= 0
X
A
+ X
B
> 1
XA = XB < 1
XA = 1 - XB
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Question # 15
The alkaline hydrolysis of fat is know as
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Condensation
Esterification
Saponification
Emulsification
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Question # 16
What is the ASTM tension testing designation for standard method for steel products.
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A 370
E 345
E8
E 9
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Question # 17
Equivalent conductance is expressed in the units.
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S cm-1 eq -1
S cm eq-1
S cm2 eq-1
S cm2 eq
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Question # 18
The number 7.65 is rounded to.
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7.6
7.7
7.5
7.8
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Question # 19
Aluminium does not corrode as does iron because.
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AI does not react with O2
a-protective layer of Al2O3 forms on the metal surface
AI is harder to oxidize than is Fe
Fe gives chathodic protection to AI
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Question # 20
White Phosphorus is kept under
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Cold water
Ammonia liquor
Ethanol
Kerosene
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Question # 21
Which of the following elements does not impart any characteristic colour to the flame.
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Ca
Mg
Ba
Sr
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Question # 22
Strongest inter molecular hydrogen bond is formed in
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H2O
NH3
HF
H2S
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Question # 23
The common oxidation state of elements of group V A is.
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-3
+3
+5
Any above
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Question # 24
The change in the concentration of the reactant of product per units time is called.
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Order of the reaction
Melecularity of the reaction
Rate of reaction
None of the above
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Question # 25
Noble gases are used in discharge tubes to give different colours. Raddish orange glow is due to.
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Ar
Ne
Xe
Kr
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Question # 26
Which of the following test to used to find out whether the observed data differ significantly from the one obtained from theoretical distribution.
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Chi square test
F -Test
Student's test
Coefficient of variance
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Question # 27
Which of the following techniques is involved in purification of organic compound.
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Distillation
Sublimation
Solvent extraction
All above
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Question # 28
Which of the following is not an adsorption indicator.
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Eosin
Bromocrsol green
Fluorescein
Phenolphthalein
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Question # 29
A covalent bond which is formed between two atoms by the overlap of atomic orbitals along their axis is called.
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Pi bond
Sigma bond
Polar bond
Non polar bond
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Question # 30
Which of the following is not a polysaccharide
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Cellobiose
Cellulose
Insulin
Amylase
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Question # 31
Which of the following in not a characteristics of crystalline solids.
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Sharp melting point
Isotropic
Long range orderly arrangemnt
None of above
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