MCQOPTIONS
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MCQOPTIONS
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.
| 1. |
Which of the following amino acid is most commonly phosphorylated in prokaryotes and plants? |
| A. | Alanine |
| B. | Lysine |
| C. | Glycine |
| D. | Histidine |
| Answer» E. | |
| 2. |
Which of the following pathway targets lysosomal enzymes to lysosomes? |
| A. | CMP pathway |
| B. | EMP pathway |
| C. | G6P pathway |
| D. | M6P pathway |
| Answer» E. | |
| 3. |
What is the process in which glutamine is converted to glutamic acid or pyroglutamic acid? |
| A. | Acetylation |
| B. | Methylation |
| C. | Hydroxylation |
| D. | Deamidation |
| Answer» E. | |
| 4. |
Proteolysis is critical to all of the processes listed below except which? |
| A. | Apoptosis |
| B. | Antigen processing |
| C. | Cell signaling |
| D. | Cell growth |
| Answer» E. | |
| 5. |
Which of the following is a method to target proteins to membranes in organelles, vesicles, and plasma membrane? |
| A. | Methylation |
| B. | Glycosylation |
| C. | Phosphorylation |
| D. | Lipidation |
| Answer» E. | |
| 6. |
Which of the following is a donor of the methyl group in methylation of proteins? |
| A. | Methionine |
| B. | Methane |
| C. | O-adenosyl methionine |
| D. | S-adenosyl methionine |
| Answer» E. | |
| 7. |
Which of the following is a well-known mechanism of epigenetic regulation? |
| A. | S-nitrosylation |
| B. | Phosphorylation |
| C. | N-glycosylation |
| D. | Methylation |
| Answer» E. | |
| 8. |
Which of the following post-translational modification aids in converting hydrophobic or lipophilic compounds into hydrophilic compounds? |
| A. | Glycosylation |
| B. | Methylation |
| C. | Ubiquitination |
| D. | Hydroxylation |
| Answer» E. | |
| 9. |
S-adenosyl methionine (SAM) is suggested to be the most used substrate in enzymatic reactions. |
| A. | True |
| B. | False |
| Answer» C. | |
| 10. |
S-nitrosylation is an irreversible reaction. |
| A. | True |
| B. | False |
| Answer» C. | |
| 11. |
Ubiquitination plays a crucial role in the degradation of proteins. |
| A. | False |
| B. | True |
| Answer» C. | |
| 12. |
Ubiquitin is 8-kDa polypeptide consisting of how many amino acids? |
| A. | 77 amino acids |
| B. | 67 amino acids |
| C. | 66 amino acids |
| D. | 76 amino acids |
| Answer» E. | |
| 13. |
Which of the following post-translational modification is shown in the figure below? |
| A. | S-nitrosylation |
| B. | Ubiquitination |
| C. | Lipidation |
| D. | Phosphoglycosylation |
| Answer» E. | |
| 14. |
Load cells are used for the measurement of pressure. |
| A. | True |
| B. | False |
| Answer» C. | |
| 15. |
The pinch valve consists of a sleeve closed by pinch bar. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 16. |
Which of the following is used for measuring gas flow? |
| A. | Rotameter |
| B. | Spectrophotometer |
| C. | UV transilluminator |
| D. | Chromatography |
| Answer» B. Spectrophotometer | |
| 17. |
Which of the following is not an antifoam device? |
| A. | Discs |
| B. | Propellers |
| C. | Brushes |
| D. | Load cell |
| Answer» E. | |
| 18. |
Which of the following valve consists of a horizontal plug or disc is raised or lowered to control flow rate? |
| A. | Plug valves |
| B. | Globe valves |
| C. | Butterfly valve |
| D. | Needle valves |
| Answer» C. Butterfly valve | |
| 19. |
Which of the following valve is the most widely used in the design of the fermenter? |
| A. | Diaphragm valve |
| B. | Needle valve |
| C. | Butterfly valve |
| D. | Plug valve |
| Answer» B. Needle valve | |
| 20. |
Which of the following valves is the most suitable for aseptic operation? |
| A. | Butterfly valves |
| B. | Ball valves |
| C. | Needle valves |
| D. | Globe valves |
| Answer» C. Needle valves | |
| 21. |
What is the function of check valves? |
| A. | To prevent the reversal of flow of liquid |
| B. | To reduce the pressure |
| C. | To reduce the flow rate |
| D. | To increase the flow rate |
| Answer» B. To reduce the pressure | |
| 22. |
Which of the following valve is used for pressure control? |
| A. | Gate valves |
| B. | Globe valves |
| C. | Needle valves |
| D. | Safety valves |
| Answer» E. | |
| 23. |
Which of the following valve consists of a disc which rotates about a shaft in a housing? |
| A. | Butterfly valves |
| B. | Piston valve |
| C. | Ball valves |
| D. | Pinch valves |
| Answer» B. Piston valve | |
| 24. |
Which of the following valve consists of a tapered plug? |
| A. | Piston valve |
| B. | Globe valve |
| C. | Needle valve |
| D. | Plug valve |
| Answer» D. Plug valve | |
| 25. |
In which of the following valve a sliding disc is moved in or out of flow path? |
| A. | Gate valve |
| B. | Globe valve |
| C. | Needle valve |
| D. | Piston valve |
| Answer» B. Globe valve | |
| 26. |
Who gave the treatment of strain gauge measurements? |
| A. | Brodgesell |
| B. | Aiba |
| C. | Bourdon |
| D. | Hall |
| Answer» C. Bourdon | |
| 27. |
Which of the following is used to control the agitation speed? |
| A. | Dynamometer |
| B. | Tachometer |
| C. | Strain gauge |
| D. | Bourdon tube |
| Answer» B. Tachometer | |
| 28. |
Which of the following is used in agitation measurement? |
| A. | Torsion dynamometer |
| B. | Bourdon tube |
| C. | Diaphragm gauge |
| D. | Strain gauge |
| Answer» B. Bourdon tube | |
| 29. |
For a compressible fluid the kinematic viscosity is affected by temperature and pressure variation. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 30. |
In liquids in order to measure the viscosity of fluid experimentally we consider the variation of shear stress with respect to what property? |
| A. | strain |
| B. | shear strain |
| C. | rate of shear strain |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 31. |
If a fluid, which has a constant specific gravity, is taken to a planet where acceleration due to gravity is 3 times compared to its value on earth, what will happen to its kinematic viscosity. |
| A. | It increases |
| B. | It decreases |
| C. | It remains constant |
| D. | None of the above |
| Answer» D. None of the above | |
| 32. |
Find the kinematic viscosity of oil having density 1962 g/m3. the force experienced for area of 20 m2 is 4.904 kN and velocity of gradient at that point is 0.2/s. |
| A. | 0.625 |
| B. | 1.25 |
| C. | 2.5 |
| D. | None of the mentioned |
| Answer» B. 1.25 | |
| 33. |
Two horizontal plates placed 250mm have an oil of viscosity 20 poises. Calculate the shear stress in oil if upper plate is moved with velocity of 1250mm/s. |
| A. | 20 N/m2 |
| B. | 2 N/m2 |
| C. | 10 N/m2 |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 34. |
Broca’s area of speech is present in ___________ |
| A. | Two optic lobes |
| B. | Frontal lobe |
| C. | Parietal lobe |
| D. | Temporal lobe |
| Answer» C. Parietal lobe | |
| 35. |
In human brain corpus callosum connects ____________ |
| A. | Two optic lobes |
| B. | Bone and muscle |
| C. | Two cerebral hemisphere |
| D. | Two lobes of pituitary gland |
| Answer» D. Two lobes of pituitary gland | |
| 36. |
________ layer of meninges that is thin and contains many blood vessels and nerves. |
| A. | Ependymal |
| B. | Dura mater |
| C. | Monosynaptic |
| D. | Pia mater |
| Answer» E. | |
| 37. |
_______ is protected by bony vertebrate, adipose tissue, and spinal meninges and cerebrospinal. |
| A. | Spinal reflexes |
| B. | Central canal |
| C. | Spinal cord |
| D. | Epidural space |
| Answer» D. Epidural space | |
| 38. |
The brain and spinal cord together make up ________ |
| A. | CNS |
| B. | ANS |
| C. | PNS |
| D. | Reflux actions |
| Answer» B. ANS | |
| 39. |
If the elements “A”, “B”, “C” and “D” are placed in a stack and are deleted one at a time, what is the order of removal? |
| A. | ABCD |
| B. | DCBA |
| C. | DCAB |
| D. | ABDC |
| Answer» C. DCAB | |
| 40. |
Assume that the operators +,-, X are left associative and ^ is right associative. The order of precedence (from highest to lowest) is ^, X, +, -. The postfix expression for the infix expression a + b X c – d ^ e ^ f is? |
| A. | abc X+ def ^^ – |
| B. | abc X+ de^f^ – |
| C. | ab+c Xd – e ^f^ |
| D. | -+aXbc^ ^def |
| Answer» C. ab+c Xd – e ^f^ | |
| 41. |
Consider the following operation performed on a stack of size 5. After the completion of all operation, the number of elements present in stack is? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4View Answer |
| Answer» B. 2 | |
| 42. |
Convert the following Infix expression to Postfix form using a stack.x + y * z + (p * q + r) * s, Follow usual precedence rule and assume that the expression is legal. |
| A. | xyz*+pq*r+s*+ |
| B. | xyz*+pq*r+s+* |
| C. | xyz+*pq*r+s*+ |
| D. | xyzp+**qr+s*+ |
| Answer» B. xyz*+pq*r+s+* | |
| 43. |
Convert the following infix expressions into its equivalent postfix expressions.(A + B ⋀D)/(E – F)+G |
| A. | (A B D ⋀ + E F – / G +) |
| B. | (A B D +⋀ E F – / G +) |
| C. | (A B D ⋀ + E F/- G +) |
| D. | (A B D E F + ⋀ / – G +) |
| Answer» B. (A B D +⋀ E F – / G +) | |
| 44. |
The result of evaluating the postfix expression 5, 4, 6, +, *, 4, 9, 3, /, +, * is? |
| A. | 600 |
| B. | 350 |
| C. | 650 |
| D. | 588 |
| Answer» C. 650 | |
| 45. |
The given pair x (t) and y (t) is related by _______ |
| A. | Y (t) = d/dt (x (t)) |
| B. | Y (t) = x (t) + 1 |
| C. | Y (t) = ∫x (t) .dt |
| D. | Not related |
| Answer» D. Not related | |
| 46. |
The given pair x (t) and y (t) is _______ |
| A. | Y (t) = d/dt (x (t)) |
| B. | Y (t) = ∫x (t).dt |
| C. | Y (t) = x (t) -1 |
| D. | Y (t) = x (t) /2 |
| Answer» B. Y (t) = ∫x (t).dt | |
| 47. |
Consider figure 4, is the given y (t) an integration of x (t)? |
| A. | Y (t) = ∫x (t).dt |
| B. | Y (t) = ∫x2 (t).dt |
| C. | Y (t) = 3* ∫x (t).dt |
| D. | Y (t) = 3* ∫x2 (t).dt |
| Answer» B. Y (t) = ∫x2 (t).dt | |
| 48. |
Considering figure 3 above, is the following figure true for y [n] = x [n/2]? |
| A. | True |
| B. | False |
| Answer» C. | |
| 49. |
Considering figure 3 above, is the following figure true for y [n] = x [2n]? |
| A. | True |
| B. | False |
| Answer» B. False | |
| 50. |
X [n] and y [n] is as shown below, the relationship between x [n] and y [n] is given by ______ |
| A. | X [n] = y [n]/3 |
| B. | X [n] = 3* y [n] |
| C. | Y [n] = x [n]/3 |
| D. | Y [n] = 3*x [n] |
| Answer» D. Y [n] = 3*x [n] | |