Stoichiometry MCQ Questions & Answers

21

Avogadro's number is equal to

A) 6.023 × 10²³ molecules/kg.mole B) 6.023 × 10²³ molecules/gm.mole C) 6.023 × 10¹⁶ molecules/kg.mole D) 6.023 × 10²⁶ molecules/gm.mole

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Answer & Solution

Answer: Option B

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22

Enthalpy of a vapor gas mixture may be increased by increasing the

A) Temperature at constant humidity B) Humidity at constant temperature C) Temperature and the humidity D) All of the above

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Answer & Solution

Answer: Option D

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23

In osmosis through a semi-permeable membrane, diffusion of the

A) Solvent is from low concentration to high concentration region B) Solvent is from high concentration to low concentration region C) Solute takes place D) None of these

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Answer & Solution

Answer: Option A

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24

Isotonic solutions must have the same

A) Viscosity B) Molar concentration C) Normality D) Critical temperature

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Answer & Solution

Answer: Option B

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25

The unit of C_p in S.I. units is

A) W/m².°K B) J/kg.°K C) W/m.°K D) J/m³.°K

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Answer & Solution

Answer: Option B

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26

The rate of material __________ is zero in case of a steady state system.

A) Accumulation B) Production C) Input D) Generation

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Answer & Solution

Answer: Option A

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27

Volume percent for gases is equal to the

A) Weight percent B) Mole percent C) Weight percent only for ideal gases D) Mole percent only for ideal gases

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Answer & Solution

Answer: Option D

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28

Kopp's rule is concerned with the calculation of

A) Thermal conductivity B) Heat capacity C) Viscosity D) Surface tension

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Answer & Solution

Answer: Option B

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29

Pick out the wrong statement.

A) Ten times dilution of a normal solution (N) reduces its normality to $$\frac{{\text{N}}}{{10}}$$ B) When equal weights of oxygen and methane are mixed in an empty reactor at room temperature, then the fraction of total pressure exerted by the oxygen is $$\frac{1}{2}$$ C) Volume occupied by 9.034 × 10²³ atoms of oxygen in ozone (O₃) at N.T.P. will be 11200 c.c D) One kg mole of an ideal gas at N.T.P. occupies 22400 Nm³

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Answer & Solution

Answer: Option D

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30

Pick out the correct conversion.

A) 1 BTU =453.6 calories B) 1 BTU = 252 calories C) 1 calorie = 252 BTU D) 1 calorie = 453.6 BTU

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Answer & Solution

Answer: Option B

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Stoichiometry MCQ Questions & Answers | Chemical Engineering