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Multiple choice question for engineering

Set 1

1. A reaction for which heat must be added to the system to maintain isothermal condition is called
a) Endothermic Reaction
b) Exothermic Reaction
c) Neutral Reaction
d) None of the mentioned

View Answer

Answer: a [Reason:] A reaction for which heat must be added to the system to maintain isothermal condition is called Endothermic Reaction.

2. A reaction for which heat must be removed from the system to maintain isothermal condition is called
a) Endothermic Reaction
b) Exothermic Reaction
c) Neutral Reaction
d) None of the mentioned

View Answer

Answer: b [Reason:] A reaction for which heat must be removed from the system to maintain isothermal condition is called Exothermic Reaction.

3. Photosynthesis is _________
a) Exothermic
b) Endothermic
c) No heat transfer
d) None of the mentioned

View Answer

Answer: b [Reason:] Photosynthesis is an Endothermic Reaction as heat is absorbed.

4. Electrolysis of water is
a) Exothermic
b) Endothermic
c) No heat transfer
d) None of the mentioned

View Answer

Answer: b [Reason:] Photosynthesis is an Endothermic Reaction as heat is absorbed.

5. Burning Butane in a gas grill is
a) Exothermic
b) Endothermic
c) No heat transfer
d) None of the mentioned

View Answer

Answer: a [Reason:] Combustion is an Exothermic Reaction as heat is released.

6. Rusting of Fe is
a) Exothermic
b) Endothermic
c) No heat transfer
d) None of the mentioned

View Answer

Answer: a [Reason:] Combustion is an Exothermic Reaction as heat is released.

7. Burning is always an ______________ process.
a) Exothermic
b) Endothermic
c) No heat transfer
d) None of the mentioned

View Answer

Answer: a [Reason:] Burning is an Exothermic Reaction as heat is released.

8. _________________ is always endothermic.
a) Burning
b) Freezing
c) Condensing
d) Boiling

View Answer

Answer: d [Reason:] Boiling is an Endothermic Reaction as heat is absorbed.

9. Temperature for standard heat of formation is
a) 298 K
b) 300 K
c) 400 K
d) 528 K

View Answer

Answer: a [Reason:] Standard temperature = 25 degree Celsius = 25+273 = 298 K.

10. Pressure for standard heat of formation is
a) 1 atm
b) 1 psi
c) 1 Kg/m2
d) None of the mentioned

View Answer

Answer: a [Reason:] Standard pressure = 1 atm.

Set 2

1. Enthalpy change associated with the formation of 1 mole of a compound from its constituent elements and products in their standard state is called
a) Standard Heat of Formation
b) Heat of Reaction
c) Heat of Combustion
d) None of the mentioned

View Answer

Answer: a [Reason:] Enthalpy change associated with the formation of 1 mole of a compound from its constituent elements and products in their standard state is called Standard Heat of Formation.

2. The heat of formation as ______ in the standard state for each stable element.
a) Zero
b) Cannot be calculated
c) Negative
d) positive

View Answer

Answer: a [Reason:] The heat of formation as Zero in the standard state for each stable element.

3. Standard heats of formation are _________ for exothermic reaction.
a) Negative
b) Positive
c) Zero
d) None of the mentioned

View Answer

Answer: a [Reason:] Standard heats of formation are negative for exothermic reaction.

4. Standard heats of formation are _________ for endothermic reaction.
a) Negative
b) Positive
c) Zero
d) None of the mentioned

View Answer

Answer: b [Reason:] Standard heats of formation are negative for endothermic reaction.

5. _________________ is the enthalpy change that is associated with a reaction.
a) Standard Heat of Formation
b) Heat of Reaction
c) Heat of Combustion
d) None of the mentioned

View Answer

Answer: b [Reason:] Heat of Reaction is the enthalpy change that is associated with a reaction.

6. Heating value is the negative of the ______________
a) Standard Heat of Formation
b) Standard Heat of Reaction
c) Standard Heat of Combustion
d) None of the mentioned

View Answer

Answer: c [Reason:] Heating value is the negative of the Standard Heat of Combustion.

7. For enthalpy reference state is at which the enthalpy is
a) Zero
b) Positive
c) Negative
d) None of the mentioned

View Answer

Answer: a [Reason:] For enthalpy reference state is at which the enthalpy is Zero.

8. Value of the negative of the heat of combustion when the product water is a vapour, is
a) Higher Heating value
b) Lower Heating value
c) Neither Higher nor Lower Heating value
d) None of the mentioned

View Answer

Answer: b [Reason:] Value of the negative of the heat of combustion when the product water is a vapour, is Lower Heating value.

9. Value of the negative of the heat of combustion when the product water is a liquid, is
a) Higher Heating value
b) Lower Heating value
c) Neither Higher nor Lower Heating value
d) None of the mentioned

View Answer

Answer: a [Reason:] Value of the negative of the heat of combustion when the product water is a liquid, is Higher Heating value.

10. Enthalpy change for the oxidation of 1 mole of a compound at standard condition is
a) Standard Heat of Formation
b) Standard Heat of Reaction
c) Standard Heat of Combustion
d) None of the mentioned

View Answer

Answer: c [Reason:] Enthalpy change for the oxidation of 1 mole of a compound at standard condition is Standard Heat of Combustion.

Set 3

1. Enthalpy change associated with the formation of 1 mole of a compound from its constituent elements and products in their standard state is called
a) Standard Heat of Formation
b) Heat of Reaction
c) Heat of Combustion
d) None of the mentioned

View Answer

Answer: a [Reason:] Enthalpy change associated with the formation of 1 mole of a compound from its constituent elements and products in their standard state is called Standard Heat of Formation.

2. The heat of formation as ______ in the standard state for each stable element.
a) Zero
b) Cannot be calculated
c) Negative
d) positive

View Answer

Answer: a [Reason:] The heat of formation as Zero in the standard state for each stable element.

3. Standard heats of formation are _________ for exothermic reaction.
a) Negative
b) Positive
c) Zero
d) None of the mentioned

View Answer

Answer: a [Reason:] Standard heats of formation are negative for exothermic reaction.

4. Standard heats of formation are _________ for endothermic reaction.
a) Negative
b) Positive
c) Zero
d) None of the mentioned

View Answer

Answer: b [Reason:] Standard heats of formation are negative for endothermic reaction.

5. _________________ is the enthalpy change that is associated with a reaction.
a) Standard Heat of Formation
b) Heat of Reaction
c) Heat of Combustion
d) None of the mentioned

View Answer

Answer: b [Reason:] Heat of Reaction is the enthalpy change that is associated with a reaction.

6. Heating value is the negative of the ______________
a) Standard Heat of Formation
b) Standard Heat of Reaction
c) Standard Heat of Combustion
d) None of the mentioned

View Answer

Answer: c [Reason:] Heating value is the negative of the Standard Heat of Combustion.

7. For enthalpy reference state is at which the enthalpy is
a) Zero
b) Positive
c) Negative
d) None of the mentioned

View Answer

Answer: a [Reason:] For enthalpy reference state is at which the enthalpy is Zero.

8. Value of the negative of the heat of combustion when the product water is a vapour, is
a) Higher Heating value
b) Lower Heating value
c) Neither Higher nor Lower Heating value
d) None of the mentioned

View Answer

Answer: b [Reason:] Value of the negative of the heat of combustion when the product water is a vapour, is Lower Heating value.

9. Value of the negative of the heat of combustion when the product water is a liquid, is
a) Higher Heating value
b) Lower Heating value
c) Neither Higher nor Lower Heating value
d) None of the mentioned

View Answer

Answer: a [Reason:] Value of the negative of the heat of combustion when the product water is a liquid, is Higher Heating value.

10. Enthalpy change for the oxidation of 1 mole of a compound at standard condition is
a) Standard Heat of Formation
b) Standard Heat of Reaction
c) Standard Heat of Combustion
d) None of the mentioned

View Answer

Answer: c [Reason:] Enthalpy change for the oxidation of 1 mole of a compound at standard condition is Standard Heat of Combustion.

Set 4

1. The surface that separates a system from the surrounding is called
a) Boundary
b) Surface
c) Surrounding
d) None of the mentioned

View Answer

Answer: a [Reason:] The surface that separates a system from the surrounding is called Boundary.

2. Boundary may be
a) Real
b) Imaginary
c) Rigid
d) All of the mentioned

View Answer

Answer: [Reason:] Boundary may be Real, imaginary, rigid.

3. A boundary may be movable. The statement is
a) True
b) False
c) Imaginary
d) None of the mentioned

View Answer

Answer: a [Reason:] A boundary may be movable and rigid as well.

4. A system that does not interchange mass with the surrounding is a _____________
a) Open System
b) Closed System
c) Bounded System
d) None of the mentioned

View Answer

Answer: b [Reason:] A system that does not interchange mass with the surrounding is a Closed System.

5. A non-flow system is also known as
a) Open System
b) Closed System
c) Bounded System
d) None of the mentioned

View Answer

Answer: b [Reason:] A non-flow system is also known as Closed system.

6. The properties of a system remain invariant under a balance of potential, is
a) Equilibrium
b) Phase transition
c) Transient phase
d) None of the mentioned

View Answer

Answer: [Reason:] The properties of a system remain invariant under a balance of potential, is Equilibrium.

7. The following is not a type of equilibrium
a) Mechanical equilibrium
b) Thermal equilibrium
c) Chemical equilibrium
d) None of the mentioned

View Answer

Answer: a [Reason:] Mechanical, Chemical and Thermal all are the types of equilibrium.

8. A property is dependent on mass of the material is
a) Extensive property
b) Intensive property
c) Neither Intensive nor Extensive
d) None of the mentioned

View Answer

Answer: a [Reason:] A property is dependent on mass of the material is Extensive property.

9. A property that does not dependent on amount of material present in the system is
a) Extensive property
b) Intensive property
c) Neither Intensive nor Extensive
d) None of the mentioned

View Answer

Answer: b [Reason:] A property that does not dependent on amount of material present in the system is Intensive property.

10. Density of a material is an
a) Extensive property
b) Intensive property
c) Neither Intensive nor Extensive
d) None of the mentioned

View Answer

Answer: b [Reason:] Density of a material doesn`t depend on the mass. It is equal for each amount of a specific material.

Set 5

1. The surface that separates a system from the surrounding is called
a) Boundary
b) Surface
c) Surrounding
d) None of the mentioned

View Answer

Answer: a [Reason:] The surface that separates a system from the surrounding is called Boundary.

2. Boundary may be
a) Real
b) Imaginary
c) Rigid
d) All of the mentioned

View Answer

Answer: [Reason:] Boundary may be Real, imaginary, rigid.

3. A boundary may be movable. The statement is
a) True
b) False
c) Imaginary
d) None of the mentioned

View Answer

Answer: a [Reason:] A boundary may be movable and rigid as well.

4. A system that does not interchange mass with the surrounding is a _____________
a) Open System
b) Closed System
c) Bounded System
d) None of the mentioned

View Answer

Answer: b [Reason:] A system that does not interchange mass with the surrounding is a Closed System.

5. A non-flow system is also known as
a) Open System
b) Closed System
c) Bounded System
d) None of the mentioned

View Answer

Answer: b [Reason:] A non-flow system is also known as Closed system.

6. The properties of a system remain invariant under a balance of potential, is
a) Equilibrium
b) Phase transition
c) Transient phase
d) None of the mentioned

View Answer

Answer: [Reason:] The properties of a system remain invariant under a balance of potential, is Equilibrium.

7. The following is not a type of equilibrium
a) Mechanical equilibrium
b) Thermal equilibrium
c) Chemical equilibrium
d) None of the mentioned

View Answer

Answer: a [Reason:] Mechanical, Chemical and Thermal all are the types of equilibrium.

8. A property is dependent on mass of the material is
a) Extensive property
b) Intensive property
c) Neither Intensive nor Extensive
d) None of the mentioned

View Answer

Answer: a [Reason:] A property is dependent on mass of the material is Extensive property.

9. A property that does not dependent on amount of material present in the system is
a) Extensive property
b) Intensive property
c) Neither Intensive nor Extensive
d) None of the mentioned

View Answer

Answer: b [Reason:] A property that does not dependent on amount of material present in the system is Intensive property.

10. Density of a material is an
a) Extensive property
b) Intensive property
c) Neither Intensive nor Extensive
d) None of the mentioned

View Answer

Answer: b [Reason:] Density of a material doesn`t depend on the mass. It is equal for each amount of a specific material.