Chemical Process Calculation Questions and Answers – Mole and Molecular Weight-V

This set of Chemical Process Calculation Multiple Choice Questions & Answers (MCQs) focuses on “Mole and Molecular Weight-V”.

1. What is the percent by weight of C in CO2?
Molecular weight of C and Oxygen are 12 and 16 respectively?
a) 25
b) 50
c) 75
d) None of the mentioned
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2. How many moles of Hydrogen are there in 1 mole of (NH4)2HPO4?
a) 1
b) 4
c) 5
d) 9
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3. Relative molecular masses can be calculated
a) By the relative atomic mass
b) By the relative mass of a covalent compound
c) if individual relative atomic masses are added
d) By adding relative compound masses
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4. What is the percentage by weight of Nitrogen in NH3?
a) 82.35
b) 83.40
c) 88.12
d) 94.56
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5. Relative molecular mass of CO2 is _________
a) 22
b) 44
c) 66
d) 88
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6. How many gms of NaOH is there in 0.002 lb mole NaOH?
a) 32.36
b) 36.32
c) 24.28
d) 28.24
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7. The quantity of matter present in an object is
a) Mass
b) Molecular weight
c) Mole
c) Molar mass
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8. The smallest particle of a substance that is capable of independent existence is _________
a) Atom
b) Molecule
c) Electron
d) Proton
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9. One mole of H2O equals
a) 22.4 litre at 1 atm and 250C
b) 6.02 x 10²³ atoms of hydrogen and 6.02 x 10²³ atoms of oxygen
c) 18 g
d) 1 gal
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10. What is the percent by weight of P in the compound in P4S3?
a) 28.3
b) 56.4
c) 25.3
d) 58.3
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Sanfoundry Global Education & Learning Series – Chemical Process Calculation.
To practice all areas of Chemical Process Calculation, here is complete set of 1000+ Multiple Choice Questions and Answers.