# Multiple choice question for engineering

## Set 1

1. The number of degrees of freedom is the number of variables in a set of independent equations to which values must be assigned so that the equations can be solved.

The above given statement is

a) True

b) False

c) Can`t say

d) None of the mentioned

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2-3. For degrees of freedom (Nd) expression, Nd = Nv – Ne

2. Nv represents

a) Number of variables

b) Number of equations

c) Number of free variables

d) None of the mentioned

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3. Ne represents

a) Number of variables

b) Number of equations

c) Number of free variables

d) None of the mentioned

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4. ______________variables are included in the analysis in contrast with the degrees of freedom.

a) Intensive

b) Extensive

c) Both Extensive and Intensive

d) None of the mentioned

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5. Gibbs phase rule for general system is

a) P+F=C-1

b) P+F=C+1

c) P+F=C-2

d) P+F=C+2

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6. The degree of freedom is zero for a single-component condensed system. What is the maximum number of phases that can co-exist?

a) 0

b) 1

c) 2

d) 3

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7. The degree of freedom at triple point in unary diagram for water zero.

The above give statement is

a) Correct

b) Incorrect

c) Partially correct

d) None of the mentioned

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8. A rigid body possesses ______________ degrees of freedom.

a) One

b) Two

c) Four

d) Six

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9. What is the degree of freedom for given sequence?

x = 3, 7, 4, 6, 9, 7, 2

a) One

b) Two

c) Four

d) Six

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10. What is the degree of freedom for given sequence?

x = 16,15,18,13, 14, 46, 82

y = 22,21,19,16

a) One

b) Two

c) Four

d) Six

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## Set 2

1. The number of degrees of freedom is the number of variables in a set of independent equations to which values must be assigned so that the equations can be solved.

The above given statement is

a) True

b) False

c) Can`t say

d) None of the mentioned

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2-3. For degrees of freedom (Nd) expression, Nd = Nv – Ne

2. Nv represents

a) Number of variables

b) Number of equations

c) Number of free variables

d) None of the mentioned

### View Answer

3. Ne represents

a) Number of variables

b) Number of equations

c) Number of free variables

d) None of the mentioned

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4. ______________variables are included in the analysis in contrast with the degrees of freedom.

a) Intensive

b) Extensive

c) Both Extensive and Intensive

d) None of the mentioned

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5. Gibbs phase rule for general system is

a) P+F=C-1

b) P+F=C+1

c) P+F=C-2

d) P+F=C+2

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6. The degree of freedom is zero for a single-component condensed system. What is the maximum number of phases that can co-exist?

a) 0

b) 1

c) 2

d) 3

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7. The degree of freedom at triple point in unary diagram for water zero.

The above give statement is

a) Correct

b) Incorrect

c) Partially correct

d) None of the mentioned

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8. A rigid body possesses ______________ degrees of freedom.

a) One

b) Two

c) Four

d) Six

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9. What is the degree of freedom for given sequence?

x = 3, 7, 4, 6, 9, 7, 2

a) One

b) Two

c) Four

d) Six

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10. What is the degree of freedom for given sequence?

x = 16,15,18,13, 14, 46, 82

y = 22,21,19,16

a) One

b) Two

c) Four

d) Six

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## Set 3

1. For a given system, number of variables is 6 and number of equations is 4. What is the number of degrees of freedom?

a) 2

b) 4

c) 6

d) 8

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2. For a given system, number of variables is x and number of equations is y. What is the number of degrees of freedom?

a) x + y

b) x – y

c) x * y

d) x / y

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3. Degrees of freedom calculation treat ____________ variables.

a) Intensive

b) Extensive

c) Both Intensive and Extensive

d) None of the mentioned

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4. Work cannot be treated as a variable for degrees of freedom calculation. The given statement is

a) Correct

b) Incorrect

c) Depends on the type of work

d) None of the mentioned

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5. Entropy cannot be treated as a variable for degrees of freedom calculation. The statement is

a) Correct

b) Incorrect

c) Depends on the type of work

d) None of the mentioned

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6. Number of variables associated with a process stream, if the number of species in the stream are 3?

a) 1

b) 3

c) 5

d) 7

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7. Number of compositions associated with a process stream, if the number of species in the stream are 5?

a) 1

b) 2

c) 3

d) 4

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8. Number of variables associated with a process stream if the number of species in the stream are 10?

a) 10

b) 12

c) 15

d) 17

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9. What are the number of equations associated with 2 process stream, if the number of species in the stream are 5?

a) 7

b) 14

c) 21

d) 28

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10. Number of equations associated with 6 process stream, if the number of species in the stream are 4?

a) 6

b) 24

c) 36

d) 72

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## Set 4

1. For a given system, number of variables is 6 and number of equations is 4. What is the number of degrees of freedom?

a) 2

b) 4

c) 6

d) 8

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2. For a given system, number of variables is x and number of equations is y. What is the number of degrees of freedom?

a) x + y

b) x – y

c) x * y

d) x / y

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3. Degrees of freedom calculation treat ____________ variables.

a) Intensive

b) Extensive

c) Both Intensive and Extensive

d) None of the mentioned

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4. Work cannot be treated as a variable for degrees of freedom calculation. The given statement is

a) Correct

b) Incorrect

c) Depends on the type of work

d) None of the mentioned

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5. Entropy cannot be treated as a variable for degrees of freedom calculation. The statement is

a) Correct

b) Incorrect

c) Depends on the type of work

d) None of the mentioned

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6. Number of variables associated with a process stream, if the number of species in the stream are 3?

a) 1

b) 3

c) 5

d) 7

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7. Number of compositions associated with a process stream, if the number of species in the stream are 5?

a) 1

b) 2

c) 3

d) 4

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8. Number of variables associated with a process stream if the number of species in the stream are 10?

a) 10

b) 12

c) 15

d) 17

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9. What are the number of equations associated with 2 process stream, if the number of species in the stream are 5?

a) 7

b) 14

c) 21

d) 28

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10. Number of equations associated with 6 process stream, if the number of species in the stream are 4?

a) 6

b) 24

c) 36

d) 72

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## Set 5

1. Mass per unit volume is called

a) Density

b) Molecular weight

c) Molar mass

d) Mole fraction

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2. Densities for ________ and ________do not change significantly at ordinary conditions with pressure.

a) Gas, liquids

b) Liquids, solids

c) Solids, gas

d) None of the mentioned

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3. Specific volume is the inverse of

a) Volume

b) Pressure

c) Density

d) Flow rate

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4. Specific gravity is the ratio of density of a substance to the density of a reference material.

The above given statement is

a) True

b) False

c) Only for some specific materials

d) None of the mentioned

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5. Density of water is

a) 1 gm/cm^{3}

b) 1000 Kg/m^{3}

c) 62.43 lb/ft^{3}

d) All of the mentioned

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^{3}= 1000 Kg/m

^{3}= 62.43 lb/ft

^{3}.

6. Specific gravity = 0.80 26˚/4˚ notation represents

a) Specific gravity when the solution is at 26˚C and the reference substance is at 4˚C is 0.80

b) Specific gravity when the solution is at 4˚C and the reference substance is at 26˚C is 0.80

c) Both a and b

d) Neither a nor b

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7-8. Specific gravity of a liquid is 2.39.

7. What is the density of the liquid in g/cm^{3}?

a) 2.39

b) 2.3910^{2}

c) 2.39×10^{3}

d) None of the mentioned

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8. What is the density of the liquid in kg/m3?

a) 2.39×10^{3}

b) 2.39

c) 2.39×10^{2}

d) None of the mentioned

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9. Specific gravity of a substance is 2.42. What is the density of the substance in lb/ft^{3}?

a) 151

b) 252

c) 302

d) 402

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10. Mass that a cube contains is 40 gm and having side length of 1 cm. What is the density of the material inside the cube?

a) 40 gm/cm^{3}

b) 20 gm/cm^{3}

c) 10 gm/cm^{3}

d) None of the mentioned