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PPSC Chemistry Full Book Test MCQs With Answers

Question # 1

Which of the following pollutant results from combustion of fossil fuels.

Choose an answer

SO2

NO2

All above

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Question # 2

The different types of glass are.

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A- glass, C-Glass, E-Glass and S-Glass

A-Glass, B-Glass, E-Glass, S-Glass

AR -Glass, C-Glass, E-Glass and S -Glass

A-B Glass

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Question # 3

The formula of sulphur sesquioxide

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SO4

S2O7

S2O3

SO3

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Question # 4

In a system , when the chemical potential of each component is the same for all phases. the equilibrium is said to be in

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Metastable equilibrium

Thermal equilibrium

Composition equilibrium

Mechanical equilibrium

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Question # 5

Which of the following has the highest melting poing.

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NaCl

Li Cl

KCl

Rb Cl

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Question # 6

Which metal can produce dihydrogen gas by reaction with dil H2SO4

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Question # 7

In average composition of a good sample of cement the percentage of silica is.

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18.5%

20.5%

22.5%

24.5%

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Question # 8

Primary structure of protein refers to

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Amino acid sequence

Arrangement of peptide chains

Orientation of amino acids

Whether is has a or b helix in space structure.

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Question # 9

Which of the following substance is released into environment in the nuclear power plants.

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Iodine -131

Argon - 41

Sr-90

Cs- 137

All above

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Question # 10

Which of the following statements is not related with flame photometric analysis.

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Vaporization of the solvent leaving back the residue

Conversion of solid slat to the gaseous state

Dissociation of gaseous molecules into free atoms

Measurement of the intensity of absorbed tradition

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