Stoichiometry MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Stoichiometry, a fundamental topic in the field of Basic Chemical Engineering. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Stoichiometry MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Stoichiometry mcq questions that explore various aspects of Stoichiometry problems. Each MCQ is crafted to challenge your understanding of Stoichiometry principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Basic Chemical Engineering tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Stoichiometry MCQs are your pathway to success in mastering this essential Basic Chemical Engineering topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Stoichiometry. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

So, are you ready to put your Stoichiometry knowledge to the test? Let's get started with our carefully curated MCQs!

Stoichiometry MCQs | Page 6 of 42

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Q51.
The weight fraction of methanol in an aqueous solution is 0.64. The mole fraction of methanol Xแด satisfies

a.

Xแด < 0.5

b.

Xแด = 0.5

c.

0.5 < Xแด < 0.64

d.

Xแด โ‰ฅ 0.64

Discuss
Answer: (d).Xแด โ‰ฅ 0.64
Q52.
Pick out the wrong statement.

a.

The effect of pressure on heat capacity of gases at pressure above one atmosphere and above the critical temperature is negligible.

b.

The value of Cแตจ of gases increases with increase in pressure, above atmospheric pressure.

c.

The value of Cแตจ at critical temperature and pressure reaches infinity.

d.

all (a), (b), and (c).

Discuss
Answer: (a).The effect of pressure on heat capacity of gases at pressure above one atmosphere and above the critical temperature is negligible.
Q53.
In case of a ternery system involving two liquid components and a solute, the ratio of the concentration of the solute in the two phases at equilibrium is called the distribution co-efficient. The distribution co-efficient depends upon the

a.

solute concentration

b.

temperature

c.

both(a) & (b)

d.

neither (a) nor (b)

Discuss
Answer: (c).both(a) & (b)
Q54.
At standard conditions,

Nโ‚‚ + 2Oโ‚‚ โ†” 2NOโ‚‚; ฮ”G° = 100 kJ/mole
NO + 1/2Oโ‚‚ โ†” 2NOโ‚‚; ฮ”G° = -35 kJ/mole

The standard free energy of formation of NO in kJ/mole is

a.

15

b.

30

c.

85

d.

170

Discuss
Answer: (c).85
Q55.
For a reaction, X โ†’ Y, if the concentration of 'X' is tripled; the rate becomes nine times. The order of reaction is

a.

0

b.

1

c.

2

d.

3

Discuss
Answer: (c).2
Q56.
The vapor pressure of liquids of similar chemical nature at any particular temperature __________ with increase in the molecular weight.

a.

increases

b.

decreases

c.

remains unchanged

d.

either (a) or (b); depends on the liquid

Discuss
Answer: (b).decreases
Q57.
The vapor pressure of liquids (having similar chemical nature) at any specified temperature __________ with increasing molecular weight.

a.

increases

b.

decreases

c.

remains unchanged

d.

increases linearly

Discuss
Answer: (b).decreases
Q58.
Mass number of an atom is the sum of the numbers of

a.

neutrons and protons

b.

protons and electrons

c.

neutrons and electrons

d.

both(a)&(b)

Discuss
Answer: (d).both(a)&(b)
Q59.
Under conditions of equal reduced pressure and equal reduced temperature, substances are said to be in the 'corresponding states'. At equal reduced conditions i.e., at the corresponding state, the __________ of different gases are nearly the same.

a.

compressibility

b.

molecular weight

c.

humidity

d.

none of these

Discuss
Answer: (a).compressibility
Q60.
A long cylinder and a sphere both of 5 cms diameter are made from the same porous material. The flat ends of cylinder are sealed. Both the cylinder and sphere are saturated with the same solution of sodium chloride. Later both the objects are immersed for a short and equal interval of time in a large tank of water which is well agitated. The fraction of salt remaining in the cylinder and the sphere are Xc and Xs respectively. Which of the following statement is correct ?

a.

Xc > Xs

b.

Xc = Xs .

c.

Xc < Xs

d.

Xc greater/less than Xs depending on the length of the cylinder

Discuss
Answer: (c).Xc < Xs
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