Explore topic-wise MCQs in Chemical Engineering.

This section includes 5314 Mcqs, each offering curated multiple-choice questions to sharpen your Chemical Engineering knowledge and support exam preparation. Choose a topic below to get started.

4151.

The pulp has tensile strength and burst strengths and brightness equal to Kraft pulp and a higher tear strength by ___________ What is the range for this in Organosolv pulping?

A. 10-11%
B. 6-7%
C. 15-20%
D. 20-25%
Answer» C. 15-20%
4152.

Mina notices various changes in proteins when they’re subjected to chemical physical change. Which of the following was wrongly understood by her?$

A. When egg-white is heated it is irreversibly denatured that is its spatial and molecular arrangement changes
B. When milk is coagulated by acid and heat, protein precipitates which is curd
C. When meat is cooked, protein chains shrink and hence it shrinks
D. Mina perfectly understood all the concepts
Answer» E.
4153.

Which of the following statement is correct for impedance?

A. Time domain ratio of voltage to current
B. Time domain ratio of current to voltage
C. Frequency domain ratio of voltage to current
D. Frequency domain ratio of current to voltage
Answer» D. Frequency domain ratio of current to voltage
4154.

In moisture content test, for how long should the sand in infrared heating bulb be heated?

A. 1 – 2 minutes
B. 2 – 3 minutes
C. 3 – 4 minutes
D. 4 – 5 minutes
Answer» C. 3 ‚Äö√Ñ√∂‚àö√ë‚àö¬® 4 minutes
4155.

To ensure that a given root definition is rigorous and comprehensive, The Lancaster team proposed several criteria that are summarized in the mnemonic CATWOE in Soft Systems Methodology (SSM).Which of the following alphabet is representing an entirely different meaning to SSM ?

A. C – Customer
B. A – Actor
C. T – Transformation
D. E – ER Model
Answer» E.
4156.

If energy available at inlet of turbine is only kinetic energy then it is classified based on

A. Type of energy at inlet
B. Direction of flow through runner
C. Head at inlet of turbine
D. Specific speed of turbine
Answer» B. Direction of flow through runner
4157.

If the field current and armature current are reversed, then

A. direction of rotation remains same
B. direction of rotation reverses
C. stops
D. none of the mentioned
Answer» B. direction of rotation reverses
4158.

A superheterodyne receiver receives signal within frequency range of 120 to 180 MHz. Then the required Intermediate frequency is _________

A. 30MHz
B. 60MHz
C. 90MHz
D. 50MHz
Answer» B. 60MHz
4159.

By aeration process, dissolved iron is oxidized into

A. Ferrous oxide
B. Ferric oxide
C. Ferrous hydroxide
D. Ferric hydroxide
Answer» C. Ferrous hydroxide
4160.

What is the magnitude of the vector, 12i – 8j – 24k?$

A. 18
B. 28
C. 38
D. 48
Answer» B. 28
4161.

Which gene does Yip5 carry?

A. LEU2
B. URA3
C. cI
D. Amp
Answer» C. cI
4162.

Which of the following trunking inefficiencies?

A. Cell splitting
B. Micro cell zone technique
C. Sectoring
D. Repeaters
Answer» D. Repeaters
4163.

Which heavy metal is found in cooling water treatment?

A. Zinc
B. Arsenic
C. Lead
D. Copper
Answer» B. Arsenic
4164.

A single-phase half wave rectifier with a FD is supplied by Vs = 240 V, AC with a load R = 10 Ω, L = 0.5 mH and a firing angle α = 30°. Find the average value of the load voltage.$

A. 50 V
B. 100 V
C. 150 V
D. 200 V
Answer» D. 200 V
4165.

Expand GPS

A. Global position satellite
B. Global perception satellite
C. Global position system
D. Geographical position system
Answer» D. Geographical position system
4166.

A 250 kW, 400 V, 6-pole dc generator has 720 lap wound conductors. Armature current is ____

A. 625A
B. 6.25A
C. 62.5A
D. 0.625A
Answer» B. 6.25A
4167.

Which formula is used to determine higher calorific value of fuel?

A. Rayleigh’s formula
B. Lamme’s equation
C. Dulongs’s formula
D. Cauchy’s formula
Answer» D. Cauchy‚Äö√Ñ√∂‚àö√ë‚àö¬•s formula
4168.

Calculate bearing strength of 20mm diameter bolt of grade 4.6 for joining main plates of 10mm thick using cover plate of 8mm thick using single cover butt joint.

A. 70.26 kN
B. 109.82 kN
C. 50.18 kN
D. 29.56 kN
Answer» D. 29.56 kN
4169.

Error due to ‘a’$

A. Error due to ‘…’
B. Error due to []
C. ‘a’
Answer» B. Error due to []
4170.

In 3-σ quality performance, the probability of producing a conforming product is _______$

A. 0.9973
B. 0.9500
C. 1
D. 0.9467
Answer» B. 0.9500
4171.

What is the relationship between the losses and the maximum efficiency on the current density?

A. current density increases, losses decrease, efficiency increases
B. current density increases, losses increase, efficiency increases
C. current density decreases, losses decrease, efficiency increases
D. current density decreases, losses increase, efficiency increases
Answer» D. current density decreases, losses increase, efficiency increases
4172.

Why do we connect a capacitor between the Vref and the Gnd pin?

A. to remove the leakage
B. to ensure more current at that place
C. to make more Vref
D. to make Vref stable and also to increase the precision of the ADC
Answer» E.
4173.

In which of the following detector is the eluent mixed with hydrogen and burned and then mixed with ozone and its intensity is measured?

A. Sulphur chemiluminescense detector
B. Thermal conductivity detector
C. Flame ionization detector
D. Electron capture detector
Answer» B. Thermal conductivity detector
4174.

Which of the following is not the function of client?

A. Compile queries
B. Query optimization
C. Receive queries
D. Result formatting and presentation
Answer» C. Receive queries
4175.

The rate of creep rapidly ___________ with time.

A. Increase
B. Decrease
C. Doesn’t affect
D. Depends on the temperature
Answer» C. Doesn‚Äö√Ñ√∂‚àö√ë‚àö¬•t affect
4176.

The number of proper subsets of the set {1, 2, and 3} is.

A. 8
B. 6
C. 7
D. 5
Answer» C. 7
4177.

Annotation which represents cookie values of requests.

A. HttpServletRequest or HttpServleResponse
B. @RequestParam
C. @Cookie
D. None of the mentioned
Answer» E.
4178.

The secondary winding of a C.T.

A. can be shorted
B. can’t be shorted
C. can be opened
D. can’t be opened
Answer» B. can‚Äö√Ñ√∂‚àö√ë‚àö¬•t be shorted
4179.

What is the main objective beyond treating feed water?

A. To remove solid particle
B. To prevent damage by scaling
C. To speed up the steaming process
D. To control conductivity
Answer» C. To speed up the steaming process
4180.

A 40 ml K no. of 10 corresponds to a kappa no. of 14.5, 20 corresponds to 30.4 kappa number, and 30 corresponds to __________ kappa number.

A. 64.1
B. 32.1
C. 85.1
D. 95.1
Answer» B. 32.1
4181.

The compressive state of stress in the shell membrane results in which construction:

A. Airtight construction
B. Water tight construction
C. Lever construction
D. Soffit construction
Answer» C. Lever construction
4182.

The first M-1 values of the output sequence in every step of Overlap save method of filtering of long sequence are discarded.

A. True
B. False
Answer» B. False
4183.

If E,G and K have their usual meanings , for an elastic material , then which one of the following be possibly true?

A. G =2K
B. G = K
C. K = E
D. G = E = K
Answer» D. G = E = K
4184.

Navigational functions are no longer available if the INS shuts down in an FMS.

A. True
B. False
Answer» B. False
4185.

The conductivity of germanium at 20°C is 2/ohm m. What is its conductivity at 40°C? Eg=0.72eV$

A. 1.38√ó10<sup>-23</sup>/Ohm m
B. 1.0002/ Ohm m
C. 293/ Ohm m
D. 313/ Ohm m
Answer» C. 293/ Ohm m
4186.

Let f(x) = (x2 + x + 1)sinh(x) the (1097)th derivative at x = 0 is

A. 1097
B. 1096
C. 0
D. 1202313
Answer» E.
4187.

A piston-cylinder contains 0.1 kg air at 400 K, 100 kPa which goes through a polytropic compression process (n = 1.3) to a pressure of 300 kPa. How much work has been done by air in the process?

A. -277 kJ
B. -377 kJ
C. -477 kJ
D. -577 kJ
Answer» D. -577 kJ
4188.

How much of a stabilizing oxide is present in partially stabilized zirconium?

A. 5%
B. 10%
C. 18%
D. 24%
Answer» B. 10%
4189.

What will happen if the first argument of open() is omitted?

A. Error Page
B. Remains in the same page
C. about:blank
D. Reloads the page
Answer» C. about:blank
4190.

_________________ sands are best molding sands.

A. Refractory Sand
B. Loam Sand
C. Natural Sand
D. Synthetic Sand
Answer» B. Loam Sand
4191.

Degree of accuracy for Invar tape, spring balance is _____

A. 1 in 100
B. 1 in 1000
C. 1 in 10,000
D. 1 in 10
Answer» D. 1 in 10
4192.

Optical fibers suffer radiation losses at bends or curves on their paths. State true or false

A. True
B. False
Answer» B. False
4193.

The various dimensioning methods include ____________

A. Parallel dimensioning
B. Vertical dimensioning
C. Inclined dimensioning
D. Horizontal dimensioning
Answer» B. Vertical dimensioning
4194.

Multiply 00100110 by 10011110 in GF(2^8) with modulus 100011011.The result is

A. 00101111
B. 00101100
C. 01110011
D. 11101111
Answer» B. 00101100
4195.

Expression for ϴ means phase angle of the reflection co efficient r=|r|-e^jθ, the phase of the reflection co-efficient is:$

A. θ=2π+2βL<sub>min</sub>
B. θ=π+2βL<sub>min</sub>
C. θ=π/2+2βL<sub>min</sub>
D. θ=π+βL<sub>min</sub>
Answer» C. ‚âà√≠‚Äö√†√®=‚âà√¨‚àö√ë/2+2‚âà√≠‚Äö√¢¬ßL<sub>min</sub>
4196.

The most important objective of the USB is to provide ______

A. Isochronous transmission
B. Plug and play
C. Easy device connection
D. All of the mentioned
Answer» E.
4197.

What is the inclination of the leader in a drawing?

A. Vertical
B. Horizontal
C. Less than 30Àö
D. Greater than 30Àö
Answer» E.
4198.

Core boxes to be used on the core blowing machines are made up of ______________

A. Iron
B. Brass
C. Aluminum
D. Carbon
Answer» D. Carbon
4199.

Which of the following enzymes of transcription commonly contains a bromodomain?

A. TFIID
B. CDK
C. Pre – RC
D. DNA polymerase
Answer» B. CDK
4200.

At distribution level transformer with which connection is used?

A. Star/star
B. Delta/delta
C. Delta/star
D. Star/delta
Answer» D. Star/delta