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PPSC Chemistry Full Book Test MCQs With Answers
Question # 1
They hydrolysis of methly acetate is a reaction of.
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First order
Second order
Third oirder
Fourth order
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Question # 2
Which of the following statement is not true regarding Open Hearth process.
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No iron is lost
The process is economical and simple
Steel obtained is of high quality
Scrap iron cannot be used in this process.
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Question # 3
The noble gases are found in the atmosphere to the extent of about some percent by volume.
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0.5%
1.0%
1.5%
2.0%
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Question # 4
Aluminum occurs in nature as.
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Native
Combined form
Both native and combined
Free
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Question # 5
The bonding of transition metal complex was not well understand until the pioneer work of.
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Ps JAISWAL
GS MANKU
BR thukral
Alfred Weriner
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Question # 6
The principal ores of copper are
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Copper sulphides
Copper oxides
Both sulphides and oxides
Copper carbonate
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Question # 7
Each fat or oil in made up of
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A distinctive mixture of several different triglycorides
A distinctive mixture of several aldehydes
Mixture of above both
None of above
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Question # 8
Among oxides of nitrogen all are gases except.
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N2O5
N2O
NO
N2O3
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Question # 9
Which of the following is not a ligand or complexing agent.
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NH3
CH3COOH
EDTA
CN-
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Question # 10
The electrode Pt/Fe2+ (C1) Fe 3+ (C2) belong to the type.
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Gas electrodes
Inert metal electrodes
Magam electrodes
Metal metal insoluble salt electrode
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Question # 11
Which of the following state is not true with respect to copper.
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it is malleable and ductile
It is a best conductor of heat and electricity
It forms alloys easily
Moltan copper absorbed carbon dioxide
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Question # 12
The size of iso electronic species - F- , Ne, and Na+ is affected by
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Nuclear charge (Z)
Valence principal quantum number (n)
Electron electron interaction in the outer orbital
None of the factors because their size to the same.
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Question # 13
Ozone layer of stratosphere requires protection from indiscriminate use of.
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Fungicides, insecticides, bactericides and medicines
Aerosols and high flying jets
Atomic explosions and industrial wastes
Weather ballons
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Question # 14
According to Usanovich concept a base is defined as any species.
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Capable of giving up anions
Combining with cations
Neutralizing an acid to give a salt
All of above
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Question # 15
Ozone is stratosphere is depleted by
Choose an answer
CF2Cl2
C7F16
C6H6Cl6
C6F6
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Question # 16
Which of the following cast irons is a high carbon silicon alloy.
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Gray iron
White iron
Malleable iron
Alloy iron
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Question # 17
Aluminothermy used for on the spot welding of large iron structures is based upon the fact that.
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As compared to iron, aluminium has greatest affinity for oxygen.
As compared to aluminium, iron has greater affinity for oxygen
Reaction between aluminim and oxygen endothermic
Reaction between iron and oxygen is endothermic
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Question # 18
A group that causes deepning of the colour is known as
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Bathchromic
Hypsochromic
Hypochromic
Hyperchromic
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Question # 19
Which of the following statements is not related to the decomposition phenomenon occurring in nature.
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Decomposition is due to autotrophic organisms
Decomposition involves bacteria and fungi
During decomposition organisms carry out specific reactions
Many species of decomposer are present in the biosphere
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Question # 20
Granulated sugar also known as.
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Brown sugar
Refined sugar
White sugar
None of these
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Question # 21
Which among the following elements has the highest value of IE.
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Mg
Na
Ca
Sr
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Question # 22
______ is used for Annealing
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Klin
Batch
Converter
Oven
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Question # 23
Ozone layer of upper atmosphere is being destroyed by
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chlorofluorocarbons
SO2
Photochemical oxidants O2 and CO2
Smog
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Question # 24
Which of the following technique is useful to remove metal ions from an interfering matrix.
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Solvent extraction
Electrophorests
Cataphorests
Gel permeation
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Question # 25
The pH Value 4.2 is of
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Vinegar
Lemons
Oranges
Tomatoes
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Question # 26
Which of the following statement is not related with the advantages of TLC.
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A variety of adsorbents can be used
The thickness of adsorbent can be varied
Fluorescence can be introduced
Different detectors can be used
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Question # 27
Commercial detergents contain mainly ___________
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RCOON
RONa
RSNa
All above
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Question # 28
BCl3 is an example of hybridization
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sp
sp2
sp3
None of above
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Question # 29
Which of the following metals is the most abundant in the earth's crust.
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Mg
Ca
K
Na
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Question # 30
The ions Sc3+ , Ca2+ and K+ have same electronic configuration as that of.
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Neon
Argon
Krypton
Xenon
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Question # 31
According to systematic nomenclature which hydrogen compound is sulphane.
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HF
Si H4
SF4
H2S
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