Definitions and Basic Concepts MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Definitions and Basic Concepts, a fundamental topic in the field of Heat Transfer. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Definitions and Basic Concepts 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 Definitions and Basic Concepts mcq questions that explore various aspects of Definitions and Basic Concepts problems. Each MCQ is crafted to challenge your understanding of Definitions and Basic Concepts principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Heat Transfer tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Definitions and Basic Concepts MCQs are your pathway to success in mastering this essential Heat Transfer topic.

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Definitions and Basic Concepts MCQs | Page 1 of 3

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Q1.
During the unfolding reaction of a helix, breakage of each hydrogen bond requires about 2kJ/mol. This implies hydrogen bonds are

a.

much stronger in proteins than in water

b.

not reformed with water

c.

slightly weaker in proteins than in water

d.

slightly stronger in proteins than in water

Discuss
Answer: (d).slightly stronger in proteins than in water
Q2.
If the enthalpy change for a reaction is zero, ฮ”G° is equal to

a.

Tฮ”S°

b.

-Tฮ”S°

c.

-ฮ”H°

d.

lnKeq

Discuss
Answer: (b).-Tฮ”S°
Q3.
Reactions that have positive standard free energy changes (ฮ”Go> 0) can be made to occur in cells by

a.

coupling them with exergonic reactions via a common intermediate

b.

manipulating the concentrations of products and reactants such that G/<0

c.

coupling them to the hydrolysis of ATP

d.

all of the above

Discuss
Answer: (d).all of the above
Q4.
The Standard Gibb's free energy, ฮ”G°, is

a.

the residual energy present in the reactants at equilibrium

b.

the residual energy present in the products at equilibrium

c.

the difference in the residual energy of reactants and products at equilibrium

d.

the energy required to convert one mole of reactants to one mole of products

Discuss
Answer: (d).the energy required to convert one mole of reactants to one mole of products
Q5.
If the Standard Gibb's free energy, ฮ”G°, for a reaction is positive then

a.

the products will be favored

b.

the reactants will be favored

c.

the concentration of the reactants and products will be equal

d.

all of the reactant will be converted to product

Discuss
Answer: (b).the reactants will be favored
Q6.
The unfolding of regular secondary structure causes

a.

little increase in the entropy of protein

b.

large decrease in the entropy of the protein

c.

no change in the entropy of the protein

d.

large increase in the entropy of the protein

Discuss
Answer: (d).large increase in the entropy of the protein
Q7.
Consider system A at uniform temperature t and system B at another uniform temperature T (t > T). Let the two systems be brought into contact and be thermally insulated from their surroundings but not from each other. Energy will flow from system A to system B because of

a.

Temperature difference

b.

Energy difference

c.

Mass difference

d.

Volumetric difference

Discuss
Answer: (a).Temperature difference
Q8.
The literature of heat transfer generally recognizes distinct modes of heat transfer. How many modes are there?

a.

One

b.

Two

c.

Three

d.

Four

Discuss
Answer: (c).Three
Q9.
An oil cooler in a high performance engine has an outside surface area 0.12 m² and a surface temperature of 65 degree Celsius. At any intermediate time air moves over the surface of the cooler at a temperature of 30 degree Celsius and gives rise to a surface coefficient equal to 45.4 W/ m² K. Find out the heat transfer rate?

a.

238.43 W

b.

190.68 W

c.

543.67 W

d.

675.98 W

Discuss
Answer: (b).190.68 W
Q10.
Unit of rate of heat transfer is

a.

Joule

b.

Newton

c.

Pascal

d.

Watt

Discuss
Answer: (d).Watt
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