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PPSC Chemistry Full Book Test MCQs With Answers
Question # 1
The isotonic nucleotide X and Y have mass numbers 35 and 37 respectively if the atomic number of X is 17 the atomic number of Y will be.
Choose an answer
15
17
19
18
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Question # 2
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 # 3
Which of the following is strongest reducing agent.
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Be
Mg
Ca
Sr
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Question # 4
Which of the following reacts with hemoglobin of blood and produce toxic effect.
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Carbon dioxide
Carbon monoxide
Oxygen
Carbon suboxide
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Question # 5
Which of the following water require zero hardness.
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Boiler feed water
Laundry water
Paper will water
Dyeing water
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Question # 6
Thermogravimetic analysis has application is which of the following fields
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Gravimetric analysis
Discovery of new methods ofseparation
Determination of purity and thermal stability
All above
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Question # 7
Which of the following bonds between carbon -carbon is teh strongest.
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Sigma bond
Pi bond
Double bond
Triple bond
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Question # 8
Which of the following is not a characteristic of phthalocyanine dyes.
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They are metal complex
the are insoluble in water
They have porphin nucleus
They are used in photographic plates
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Question # 9
The purification of Bauxite can be carried out.
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Baeyer's process
Hall's process
Serpek's process
Any of above
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Question # 10
H-Bond has more energy than the van der Waals forces i.e.
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1.0 kcal/mole
2.0 k cal/mole
10.0 kcal/mole
20. 0 kcal mole
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Question # 11
How much amount of NaOH is required to prepare 100 mL of 1 N solution.
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80 g
4 g
40 g
zero
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Question # 12
Which of the following substance is not weak electrolyte.
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CH3COOH
NH4OH
Oxalic Acid
NaCl
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Question # 13
Example of intra molecular hydrogen bonding.
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O-nitrophenol
O-hydroxy benzaldehyde
O- hydroxy benzoic acid
All of the above
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Question # 14
Permanent hard water is softened by addition of.
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Na2CO3
CaCO3
MgCO3
ZnCO3
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Question # 15
Which of the following is not a naturally occurring dye.
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Indogo
Indigotin
Alizarin
Malachite green
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Question # 16
The most electronegative element of the third period is.
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F
P
Br
Cl
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Question # 17
Who proved that all the six hydrogen atoms in benzen are equivalent.
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Kekule
Ladenburg
Faraday
Wohler
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Question # 18
Which of the following solutions of sulphuric acid will exactly neutralize 25 mL. of 0.2 M NaOH
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12.5 mL of 0.1 M solution
24 mL OF 0.1 m Solution
50 mL of 0.1 M solution
None of the above
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Question # 19
The most stable oxidation state shown by lead is.
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+2 , +4
+2 only
+3 , +4
+4 only
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Question # 20
The nutrients which are required in very small amount for the normal growth of plants are called.
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Nitrogenous fertilizers
Micronutrients
Phosphorus fertilizer
All of the above
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Question # 21
Among all halogens no oxyacid of the following is known
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F
Cl
Br
I
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Question # 22
Which one of the following has the highest boiling point.
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H2O
H2S
H2Se
H2Te
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Question # 23
If Steel is heated to a temperature well below red heat and to then cooled slowly the process is called.
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Annealing
Quenching
Tempering
Nitriding
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Question # 24
An auxochrome is a group which
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Absorbs in UV region
Absorbs in visible region
Absorbs in IR region
Increase absorption wavelength of chromophore
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Question # 25
Select an acidic amino acid
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Lysine
Cystine
Aspartic acid
Aminoacetic acid
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Question # 26
Phenol on reaction with ethanoic anhydrides in the presence of sodium ethanoate gives.
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Phenyl benzoate
Ethyl benzoate
Phenyl ethanoate
Phenyl methyl ether
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Question # 27
The second order rate constant can have units.
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dm-6 mol 2 s-1
dm3 mol s-1
dm
3
mol
-1
s
-1
dm6 mol-1 s-1
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Question # 28
In a system of designating wrought aluminum alloys. what does the second digit represents.
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The purity of aluminum
The identity of the alloy
The modification of the alloy group or impurity limits
None of above
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Question # 29
The width of a carbon nano tube is.________ nm
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1
1.3
2.5
10
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Question # 30
Elements in the same vertical group of the periodical have same
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Number of electron
Atomic number
Number of valence elections
Electronic configuration
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Question # 31
According to CFT the metal ligand bond is considered to be ionic to presentage.
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100%
90%
50%
70%
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