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Chemical Engineering Basics Online Exam Quiz

Important questions about Chemical Engineering Basics. Chemical Engineering Basics MCQ questions with answers. Chemical Engineering Basics exam questions and answers for students and interviews.

Work done by a/an __________ process is determined by following equation.

Options

A : a. adiabatic

B : b. quasi-static

C : c. isothermal

D : d. isentropic

Which of the following is the correct nature of shear stress distribution along the cross section in a horizontal circular pipe under steady state fluid flow condition ?

Options

A : a. A

B : b. B

C : c. C

D : d. D

Temperature profile along the length of a gas-gas counter flow heat exchanger is correctly represented by

Options

A : a. A

B : b. B

C : c. C

D : d. D

Internal energy of a gas obeying Vanderwall's equation of state given below, depends upon its

Options

A : a. pressure & temperature.

B : b. pressure & specific volume.

C : c. temperature & specific volume.

D : d. temperature only.

Which of the following represents the correct time-temperature curve when a block of metal is heated above room temperature & then left to cool in the room following Newton's law of cooling in which the rate of temperature drop will go on decreasing with the passage of time.

Options

A : a. A

B : b. B

C : c. C

D : d. D

Consider the equilibrium A(g) + B(g) = AB(g). When the partial pressure of A is 10?² atm, the partial pressure of B is 10?³ atm and the partial pressure of AB is 1 atm, the equilibrium constant 'K' is

Options

A : a. 10 atm?¹

B : b. 10? atm?¹

C : c. 10 (dimensionless)

D : d. 10? (dimensionless)

M?? index of coke indicates its

Options

A : a. compressive strength.

B : b. hardness.

C : c. abrasion resistance.

D : d. impact strength.

The concentration of (H?) ions is 4 x 10?? in a solution. Then pH of the solution will be (Given log 4 = 0.6 )

Options

A : a. 4.4

B : b. 5.6

C : c. 8.4

D : d. 2.4

Austempering of steel requires.it to be heated to 875°C followed by sudden cooling to 250-525°C, thereby changing austenite to

Options

A : a. sorbite

B : b. bainite

C : c. martensite

D : d. troostite

In a furnace with heating element temperature at 1700°C, the dominant machanism of heat transfer will be

Options

A : a. conduction

B : b. radiation

C : c. natural convection

D : d. forced convection

Electrolytic reduction cell used for conversion of calcined Al?O? to Al is a carbon lined furnace operating at 800-900 °C. The purpose of electric current supplied to the furnace is to

Options

A : a. achieve very high purity of aluminium (99.9%).

B : b. keep the electrolyte in liquid condition by the generation of heat.

C : c. electrolytically dissociate alumina.

D : d. both(b) & (c).

For the irreversible reaction, Ca+ 2C = CaC? , ? H°298 = - 60000 J . mole?¹ . If a system initially containing 2 moles of calcium, 3 moles of carbon and 1 mole of calcium carbide is allowed to react to completion, the heat evolved at 298 K will be

Options

A : a. 30000 J

B : b. 60000 J

C : c. 90000 J

D : d. 240000 J

Volumetric composition of flue gas analysed with the Orsat apparatus is : CO? = 12%, O? = 8%, CO = nil, N? = 80%. This flue gas composition indicates that

Options

A : a. pure oxygen has been used for combustion.

B : b. nitrogen percentage in the fuel is very high.

C : c. excess air has been used for combustion.

D : d. hydrogen is not present in the fuel.

The approximate height of a blast furnace having a useful volume of 2000 m³ is about __________ metres

Options

A : a. 25

B : b. 35

C : c. 55

D : d. 75

FeO (s) + CO (g) = Fe (s) + CO? (g), k = 0. 435 at 1173E; At equilibrium, what will be the number of moles of CO gas required to reduce one mole of FeO at 1173 K?

Options

A : a. 1.0

B : b. 1.3

C : c. 2.3

D : d. 3.3

The Al?O? content of cryolite in Hall-Heroult's cell is maintained between __________ percent.

Options

A : a. 2-5

B : b. 18-20

C : c. 12-15

D : d. 6-12

Scaling occurs in boiler tubes due to the fact that, the solubility of Ca(OH)? __________ with increasing temperature.

Options

A : a. increases

B : b. decreases

C : c. shows inversion of solubility

D : d. none of these

In fluid flow, and heat and mass transfer, one encounters (i) kinematic velocity (?), (ii) molecular diffusivity (?) and thermal diffusivity (?). The units of these quantities are.

Options

A : a. ? , ? and ? all have units of m/s.

B : b. ? , ? and ? all have units of m²/s.

C : c. ? and ? have units of m²/s, while ? has unit of m/s.

D : d. ? and ? have units of m/s, while ? has unit of m²/s.

The diffusion co-efficient of Ni in Cu at 1000 K is 1.93 x 10?¹? m² . S?¹ and it is 1.94 x 10?¹? m² S?¹ at 1200 K. The activation energy (in k. J.mole?¹ ) for the diffusion of Ni in Cu is

Options

A : a. 130

B : b. 180

C : c. 230

D : d. 250

Saturated steam at a pressure of 25 kg/cm² is throttled to attain 5 kg/cm² . Then the outcoming steam will be

Options

A : a. wet

B : b. saturated

C : c. superheated

D : d. none of these

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