E-PolyLearning

26. Number of isotopes occupied by carbon is
a. three
b. seven
c. five
d. six
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Answer: (a).three

27. Mass of one molecule of sulphuric acid is
a. 98
b. 95
c. 97
d. 92
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Answer: (a).98

28. Law of definite proportion is obeyed in
a. Stoichiometry
b. electrometry
c. spectrometer
d. photometry
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Answer: (a).Stoichiometry

29. Mass spectrometer use to determine isotopes in solid state is
a. Bohr's
b. Aston's
c. dempester's
d. Alison's
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Answer: (c).dempester's

30. Amount of oxygen in combustion analysis is determined by method of
a. product
b. difference
c. addition
d. division
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Answer: (b).difference

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