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PPSC Chemistry Full Book Test MCQs With Answers
Question # 1
Which of the following is not a component of flame photometer.
Choose an answer
Pressure regulator and flow meter
The atomizer
The burner
Hallow cathode lamp
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Question # 2
pKa value of hyponitrous acid is.
Choose an answer
-7.0
8.9
4.1
6.6
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Question # 3
Metallic bond is treated essentially as in character
Choose an answer
Ionic
Covalent
Polar
Non polar
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Question # 4
_______ is heat treatment cycle that prevents glass from harmful stress.
Choose an answer
Forming
Annealing
Batching
None of these
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Question # 5
Carbides because of their hardness are
Choose an answer
Ionic carbides
Interstitial carbides
covalent carbides
Any of above
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Question # 6
The 'shape' of molecule ." Xe F6 is.
Choose an answer
Pentagonal bipyramidal
Regular octahedral
Distorted octahedral
Square planar
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Question # 7
Black and white photographic film contain small grains of.
Choose an answer
Silver bromide
Silver cholride
Silver iodide
Any of above
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Question # 8
Which two atoms of hydrogen combine to form a molecule of hydrogen gas. the energy of the hydrogen molecule is.
Choose an answer
Higher than that of separate H atoms
Equal to that of separate H atoms
Lower than that of separate H atoms
Sometimes lower and sometimes higher than that of separate H.
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Question # 9
Which is not an ore of aluminium.
Choose an answer
Baxuite
Cryolite
Monazite
Corundum
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Question # 10
[Ti(OH2)6]3+ gives colour
Choose an answer
Green
Red
Purple
Blue
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Question # 11
The maximum number of electrons in s,p,d and f sub shells are.
Choose an answer
2 in each
2, 6, 10, 18
2,6 ,10,14
5 in each
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Question # 12
What combination of elements has high electrical resistance high corrosion resistance, and high strength at red hear temperatures, making it useful in resistance heating.
Choose an answer
Aluminium bronze
Nichrome
Hastelloy
None of above
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Question # 13
Used in TV sets and sound movies to give ready response to electrical potential
Choose an answer
He
Ne
Ar
Kr
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Question # 14
Select the major product obtained from the addition HBr to 1-methyl cyclohexene.
Choose an answer
1- bromo -2- methyl cyclohexane
6- bromo-1- methyl cyclohex - 1- ene
3- bromo-1- methyl cyclohex -1- ene
1- bromo-1- methyl cyclohexane
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Question # 15
What % if nickel is present in the major ore Pentlandite.
Choose an answer
22%
18%
14%
10%
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Question # 16
What is considered as the general purpose oldest type and widely used case iron.
Choose an answer
Grey iron
Alloy iron
Black iron
Ductile iron
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Question # 17
The reagent which can be used to distinguish acetophenone from benzophenone is.
Choose an answer
2,4 -dinito phenyl hydrazine
Li AIH4
Benedict reagetn
I2 and Na2CO3
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Question # 18
Consider the coordination compound Na2[Pt(CN)4] the Lewis and is
Choose an answer
[Pr(CN)4]2
Na+
Pt
Pt2+
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Question # 19
Group IV A consist elements.
Choose an answer
3
4
5
6
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Question # 20
Which of the following is planar?
Choose an answer
CH2Cl2
CHCl3
CCl4
C2H2
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Question # 21
The most widely used method of extracting metal ions is the formation of a chelate molecule with an organic chelating agent The chelating agents are.
Choose an answer
Strong acids
Strong bases
Weak bases
Weak acids
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Question # 22
Not a Characteristic property of ceramic material
Choose an answer
High temperature stability
High mechanical strength
Low elongation
Low hardness
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Question # 23
Which of the following material is a constituent of crop residue.
Choose an answer
Cull
Fruit
vines
Bagasse
All above
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Question # 24
What exactly is quantum dot
Choose an answer
A semiconductor nanostructure that confines the motion of conduction band electrons, valence band holes or excitation in all three spatial directions
The sharpest possible tip of an atomic force microscope
A fictional term used in science fiction for the endpoints of wormholes
Unexplained spots that appear electron microscopy images of nanostructures smaller than 1 nanometer
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Question # 25
In B2H6 molecule
Choose an answer
There exists a direct B-B a -bond
All the atoms are in one plane
All the B-H bonds are normal covalent bonds
There exist two bonds between the boron atoms.
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Question # 26
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 # 27
Gravimetric method is based on which of the following property.
Choose an answer
Volume of a liquid
Volume of gas
Mass of substance
Viscosity
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Question # 28
Select an acidic amino acid
Choose an answer
Lysine
Cystine
Aspartic acid
Aminoacetic acid
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Question # 29
The central metal atom or ion and the ligands that are directly attached to it are enclosed in a square bracket called.
Choose an answer
Coordiantion complex
Coordination sphere
Coordination number
Coordination compounds
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Question # 30
Which of the following analytical technique is based on the refraction of radiation.
Choose an answer
Conductometry
Refractometry
Coulometry
Potentiaometry
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Question # 31
Which of the following type of polymerization is used for the preparation of synthetic rubber.
Choose an answer
Free radical
Zingler natta
Cationic
Anionic
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