FSC Physics MCQs Part 2 Physics Part 1 HSSC Pre Medical Pre Engineering text Book Questions first year and second-year Physics mcqs

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Octane number can be improved by
A. Isomerization B. Adding (C2H5)4 Pb
C. Adding (CH3)4 Pb D. All
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[explanation]D[/explanation]
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[question]
Propene can exhibit
A. cis-trans isomerism B. geometric isomerism
C. both a & b D. none of the above
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[explanation]D[/explanation]
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[question]
Pentane and 2-methyl butance have the same
A. Boiling point B. Melting point
C. Percentage composition D. Structural formula
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[explanation]C[/explanation]
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According to vital force theory
A. Oorganic compounds can be synthesized from inorganic compounds
B. organic compounds cannot be synthesized from inorganic compounds
C. organic compounds can be synthesized by animals
D. organic compounds can be synthesized by plants
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[explanation]B[/explanation]
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[question]
A double bond consists of
A. Two sigma bonds B. Two Pi bonds
C. One sigma and one Pi bonds D. One sigma and two Pi bonds
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[explanation]C[/explanation]
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[question]
Chemical properties of first member of homologous series with respect to other members are
A. same
B. different
C. depends upon number of C atoms
D. depends upon number of H atoms
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[explanation]A[/explanation]
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[question]
Rate of reactions of most organic compounds are
A. very slow B. very fast
C. slow D. no regular character present
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[explanation]C[/explanation]
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[question]
Methane is used in power generation in chemical industries being a
A. natural gas B. good caloric value
C. cheaper D. All
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[explanation]C[/explanation]
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[question]
First organic compound synthesized in laboratory was
A. tartaric acid B. ethyl alcohol
C. methanol D. urea
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[explanation]D[/explanation]
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The precess in which larger molecule with higher molecular weight breaks down into smaller moleucles with lower molecular weight
A. polymerization B. pyrolysis
C. isomerism D. no such process occurs
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[explanation]B[/explanation]
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