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PPSC Chemistry Full Book Test MCQs With Answers
Question # 1
Which of the following statements is not true for both B and Al
Choose an answer
They burn in oxygen to give oxides at high temperature
Their halides are Lewis acids
They combine with nitrogen to form nitrides
They react with HCl to form chlroides.
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Question # 2
What types of bonding occurs in d-block elements.
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Ionic
Covalent
Metallic
Both B and C
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Question # 3
Which of the following elements has the highest value of IE.
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Na
K
Mg
Ca
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Question # 4
DTA is of great importance in which of the following field
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Ceramic
Metallurgy
Mineralogy
All
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Question # 5
During the last two centuries, the atmospheric CO2 contents are increased by
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15%
25%
35%
50%
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Question # 6
The width of a carbon nano tube is.________ nm
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1
1.3
2.5
10
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Question # 7
The gases that are responsible for green house effect are.
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CO2 & CH4
CFC
N2O
All above
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Question # 8
If Principal quantum number n = 4 the quantum number l can have calue.
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1,2,3 and 4
0,1,2 and 3
1,2 and 3 only
None of the abvoe
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Question # 9
In the Mendeleev's periodic table elements are arranged in the increasing order of their .
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Numbers of neutrone.
Atomic number
Atomic mass
Atomic volume
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Question # 10
When FeSO4 is added in the sodium extract the compound formed is.
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Only Na4[Fe (CN)6]
Only Fe (OH)2
Only Na2So4
Mixture of all these
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Question # 11
PCl5 is an example of hybridization
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d sp
3
d2 sp2
sp2
sp3
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Question # 12
Among the elements of second period the element with highest melting point belongs to group.
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1
14
17
18
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Question # 13
in monel metal copper is alloyed wiht which metal.
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Fe
Mn
Ni
All
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Question # 14
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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Question # 15
Stable metal ions strictures are.
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Noble gas structure
Is electron group structure
Transition metal in structure
All of the above
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Question # 16
What is abuckyball
Choose an answer
A carbon molecule
Nickname for Mercedes -Benz's futuristic concept car (CIII)
Plastic explosives nanoparticle (C4)
Concrete nanoparticle with a compressive strength of 20 nanonewtons(C20)
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Question # 17
The boiling point of water is unexpectedly high because.
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H2O molecule in linear
Sp3 hydrogen bonding is involved in the formation of water
There is hydrogen bonding and consequent association of H2O molecules.
Oxygen is the first member of the VI group
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Question # 18
CFT can very well explain
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Color
Magnetic properties
Spectra of transition metal
All
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Question # 19
Most electronegative element is.
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C
Si
Pb
Sn
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Question # 20
Which of the following is not a characteristics of terponoids.
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They are pleasant smelling liquids
They are steam volatile
They are nitrogenous bases
They are insoluble in water
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Question # 21
Chromium is found in nature in the the form of.
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Oxides
Silicates
Borates
Sulphides
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Question # 22
D(+) glyceraldebydes has the absolute configurtion.
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E-
S-
E-
Z-
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Question # 23
Concentration polarization arises because of the
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Different concentrations of solutions in the two half cells
Changes in the concentration of electrolyte around the electrode from bulk concentration
Reversible nature of the cell
Variation in temperature during measurements
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Question # 24
Glass was first made by about________
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40 BC
400 BC
4000 BC
100 BC
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Question # 25
Ionic reactions mainly take place in.
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Aqueous solutions and organic solvents of high polarity
Non aqueous solvents of low polarity
Gaseous state
Solid state
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Question # 26
Chlorine when attached to benzene has
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+1 and + R effect
-1 and - R effect
-1 and +R effect
None of the above
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Question # 27
Which one of the following has the highest boiling point.
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H2O
H2S
H2Se
H2Te
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Question # 28
A colloidal system in which both the dispersion phase and dispersed phase are liquid is.
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Smoke
Emulsion
Whipped cream
Mist
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Question # 29
1 nanometre =___________ cm
Choose an answer
10
-9
10
-8
10
-7
10
-6
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Question # 30
Which of the following statements is not true with respect to atomic spectroscopy.
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Atoms are simplest form of matter
Atoms cannot rotate or vibrate as molecules do
Only electronic transitions within atoms take place
Band spectra are observed
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Question # 31
Which of the following is the most abundant alkaline earth metal.
Choose an answer
Be
Mg
Ca
Sr
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