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.
| 1601. |
_____________ is referred to as The Father of Regenerative Medicine. |
| A. | Arnie Caplan |
| B. | Gregor Mendel |
| C. | Aristotle |
| D. | Theophrastus |
| Answer» B. Gregor Mendel | |
| 1602. |
Gradual deterioration of the Immune system as age increases is termed as ___________________ |
| A. | immuno-senescence |
| B. | immuno-staining |
| C. | immuno-suppression |
| D. | immuno-surveillance |
| Answer» B. immuno-staining | |
| 1603. |
Quite like Tissue engineering _____________ is a branch of translational research trying to devise ways to fool the immune system in order to avoid immune attacks. |
| A. | cloning |
| B. | gene therapy |
| C. | regenerative medicine |
| D. | molecular medicine |
| Answer» D. molecular medicine | |
| 1604. |
Power to weight ratio for high performance cars can range up to _______ |
| A. | 150 |
| B. | 190 |
| C. | 230 |
| D. | 280 |
| Answer» D. 280 | |
| 1605. |
Gradient resistance for a vehicle depends on which of the following factors? |
| A. | Weight of the vehicle |
| B. | Size of the vehicle |
| C. | Width of tyres |
| D. | Speed of the vehicle |
| Answer» B. Size of the vehicle | |
| 1606. |
The value of coefficient of air resistance for average cars is approximately equal to __________ |
| A. | 0.32 |
| B. | 0.032 |
| C. | 0.0032 |
| D. | 1.32 |
| Answer» D. 1.32 | |
| 1607. |
If ‘k’ is coefficient of air resistance, ‘A’ is frontal area projected by the vehicle in square metres and ‘V’ is vehicle speed(in km/h) then the expession for air resistance ‘A.R’ on the vehicle is _________ |
| A. | A.R = k*A*V^2 |
| B. | A.R = k*A*V^3 |
| C. | A.R = 2k*A*V |
| D. | A.R = k*A*V |
| Answer» B. A.R = k*A*V^3 | |
| 1608. |
Wind or air resistance depends on which of the following factors? |
| A. | Shape and size of vehicle body |
| B. | Air velocity |
| C. | Speed of vehicle |
| D. | All of the mentioned |
| Answer» E. | |
| 1609. |
For an average type of road surface what percentage of vehicle’s weight constitutes rolling resistance? |
| A. | 5 to 10% |
| B. | 1 to 2% |
| C. | 2 to 5% |
| D. | 0 to 3% |
| Answer» C. 2 to 5% | |
| 1610. |
Rolling resistance doesnot depend on which of the following factors? |
| A. | Load on each road wheel |
| B. | Radius of driving wheel |
| C. | Wheel inflation pressure |
| D. | Nature of road surface |
| Answer» C. Wheel inflation pressure | |
| 1611. |
The force that opposes the motion of a vehicle is _______ |
| A. | Rolling resistance |
| B. | Gradient resistance |
| C. | Wind or air resistance |
| D. | All of the mentioned |
| Answer» E. | |
| 1612. |
Which of these is not a power loss which takes place between engine and driving wheel? |
| A. | Power loss due to friction of piston bearings and gears |
| B. | Power loss from clutch to drive wheel due to friction of various parts |
| C. | Transmission line loss |
| D. | None of the mentioned |
| Answer» E. | |
| 1613. |
If ‘V’ is vehicle speed(in metres/min) and ‘R’ is radius of driving wheel(in metres) then the rpm of the driving wheel is given by _______ |
| A. | rpm = V/2πR |
| B. | rpm = 2πV/R |
| C. | rpm = πR/V |
| D. | rpm = πV/R |
| Answer» B. rpm = 2πV/R | |
| 1614. |
The torque available at the contact between road and driving wheel is called _________ |
| A. | Brake power |
| B. | Friction power |
| C. | Tractive effort |
| D. | Engine torque |
| Answer» D. Engine torque | |
| 1615. |
If ‘T’ is torque(in Nm) and ‘N’ is speed(in rpm) then the required expression for Brake power ‘B.P’ in kWs is _________ |
| A. | 2πNT/6000 |
| B. | 2πNT/60000 |
| C. | πNT/6000 |
| D. | πNT/60000 |
| Answer» C. πNT/6000 | |
| 1616. |
What is the power delivered by the engine to the crankshaft called? |
| A. | Shaft power |
| B. | Horse power |
| C. | Brake power |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 1617. |
Which of the following sorting algorithms can be used to sort a random linked list with minimum time complexity? |
| A. | Insertion Sort |
| B. | Quick Sort |
| C. | Heap Sort |
| D. | Merge Sort |
| Answer» E. | |
| 1618. |
What does the following function do for a given Linked List with first node as head? |
| A. | Prints all nodes of linked lists |
| B. | Prints all nodes of linked list in reverse order |
| C. | Prints alternate nodes of Linked List |
| D. | Prints alternate nodes in reverse orderView Answer |
| Answer» C. Prints alternate nodes of Linked List | |
| 1619. |
Which of the following points is/are not true about Linked List data structure when it is compared with an array? |
| A. | Arrays have better cache locality that can make them better in terms of performance |
| B. | It is easy to insert and delete elements in Linked List |
| C. | Random access is not allowed in a typical implementation of Linked Lists |
| D. | Access of elements in linked list takes less time than compared to arrays |
| Answer» E. | |
| 1620. |
Linked list data structure offers considerable saving in _____________ |
| A. | Computational Time |
| B. | Space Utilization |
| C. | Space Utilization and Computational Time |
| D. | Speed Utilization |
| Answer» D. Speed Utilization | |
| 1621. |
In Linked List implementation, a node carries information regarding ___________ |
| A. | Data |
| B. | Link |
| C. | Data and Link |
| D. | Node |
| Answer» D. Node | |
| 1622. |
Linked lists are not suitable for the implementation of ___________ |
| A. | Insertion sort |
| B. | Radix sort |
| C. | Polynomial manipulation |
| D. | Binary search |
| Answer» E. | |
| 1623. |
What kind of linked list is best to answer questions like “What is the item at position n?” |
| A. | Singly linked list |
| B. | Doubly linked list |
| C. | Circular linked list |
| D. | Array implementation of linked list |
| Answer» E. | |
| 1624. |
For an ideal DC machine, which phenomenon will reduce the terminal voltage? |
| A. | Armature reaction |
| B. | Commutation |
| C. | Armature ohmic losses |
| D. | All will contribute in reducing the terminal voltage |
| Answer» C. Armature ohmic losses | |
| 1625. |
For a constant emf, if field current is reduced then the speed of the DC motor will_____ |
| A. | Remains same |
| B. | Increases |
| C. | Decreases |
| D. | Can’t say |
| Answer» C. Decreases | |
| 1626. |
A 4-pole Dc wound machine is lap wound with 400 conductors. The pole shore is 20 cm long and average flux density over one-pole pitch is 0.4 T, the armature diameter being 30 cm. What is the value of flux/pole? |
| A. | 0.188 Wb |
| B. | 18.88 Wb |
| C. | 0.0188 Wb |
| D. | 1.888 Wb |
| Answer» D. 1.888 Wb | |
| 1627. |
When the surcharge angle reduces to zero, the coefficient of active earth pressure is given by |
| A. | Ka=1 |
| B. | \(K_a=\frac{1-sinφ}{1+sinφ}\) |
| C. | \(K_a=\frac{1+sinφ}{1-sinφ}\) |
| D. | Ka=0 |
| Answer» C. \(K_a=\frac{1+sinφ}{1-sinφ}\) | |
| 1628. |
For backfill with sloping surface, the coefficient of active earth pressure is given by ______ |
| A. | \(K_a=\frac{\sqrt{cos^2 β-cos^2 φ}}{cosβ+\sqrt{cos^2 β-cos^2 φ}} \) |
| B. | \(K_a=\frac{cosβ+\sqrt{cos^2 β-cos^2 φ}}{cosβ-\sqrt{cos^2 β-cos^2 φ}} \) |
| C. | \(K_a=\frac{cosβ-\sqrt{cos^2 β-cos^2 φ}}{cosβ+\sqrt{cos^2 β-cos^2 φ}} \) |
| D. | \(K_a=cosβ\frac{cosβ-\sqrt{cos^2 β-cos^2 φ}}{cosβ+\sqrt{cos^2 β-cos^2 φ}} \) |
| Answer» E. | |
| 1629. |
The Rankine’s lateral pressure ratio is given by ________ |
| A. | \(K=\frac{\sqrt{cos^2 β-cos^2 φ}}{cosβ+\sqrt{cos^2 β-cos^2 φ}} \) |
| B. | \(K=\frac{cosβ+\sqrt{cos^2 β-cos^2 φ}}{cosβ-\sqrt{cos^2 β-cos^2 φ}} \) |
| C. | \(K=\frac{cosβ-\sqrt{cos^2 β-cos^2 φ}}{cosβ+\sqrt{cos^2 β-cos^2 φ}} \) |
| D. | \(K=cosβ\frac{cosβ-\sqrt{cos^2 β-cos^2 φ}}{cosβ+\sqrt{cos^2 β-cos^2 φ}} \) |
| Answer» D. \(K=cosβ\frac{cosβ-\sqrt{cos^2 β-cos^2 φ}}{cosβ+\sqrt{cos^2 β-cos^2 φ}} \) | |
| 1630. |
The vertical and the lateral pressures have the same angle of obliquity β. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 1631. |
For finding out the active earth pressure for a backfill with sloping surface, the Rankine’s theory makes as additional assumption of ________ |
| A. | vertical and lateral stresses are normal to surcharge |
| B. | vertical and lateral stresses are tangential to surcharge |
| C. | vertical and lateral stresses are conjugate |
| D. | vertical and lateral stresses are negligible |
| Answer» D. vertical and lateral stresses are negligible | |
| 1632. |
The height of fill Ze, equivalent to uniform surcharge intensity is __________ |
| A. | q/γ |
| B. | q-γ |
| C. | q+γ |
| D. | q*γ |
| Answer» B. q-γ | |
| 1633. |
If the backfill carries a uniform surcharge q, then the lateral pressure at the depth of wall H is ____________ |
| A. | pa=Ka γz+Ka q |
| B. | pa=Ka γz-Ka q |
| C. | pa=Ka γz*Ka q |
| D. | pa=Ka γz/Ka q |
| Answer» B. pa=Ka γz-Ka q | |
| 1634. |
For the different value of φ, the backfill is partly submerged to height H2 and the backfill is moist to a depth H1. Find the lateral pressure intensity at the base of wall for φ1>φ2. |
| A. | pa=Ka2 γH1-Ka2 γ’ H2+γw H2 |
| B. | pa=Ka2 γH1+Ka2 γ’ H2+γw H2 |
| C. | pa=Ka2 γH1+γw H2 |
| D. | pa=Ka2 γH1+Ka2 γ’ H2 |
| Answer» C. pa=Ka2 γH1+γw H2 | |
| 1635. |
For the same value of φ, the backfill is partly submerged to height H2 and the backfill is moist to a depth H1. Find the lateral pressure intensity at the base of wall. |
| A. | pa=Ka γH1-Ka γ’ H2+γw H2 |
| B. | pa=Ka γH1+Ka γ’ H2+γw H2 |
| C. | pa=Ka γH1+γw H2 |
| D. | pa=Ka γH1+Ka γ’ H2 |
| Answer» C. pa=Ka γH1+γw H2 | |
| 1636. |
If the angle of internal friction decreases, then Ka ___________ |
| A. | decreases |
| B. | increases |
| C. | equal to zero |
| D. | does not change |
| Answer» C. equal to zero | |
| 1637. |
If free water stands on both side of a retaining wall, the lateral earth pressure is given by ____ |
| A. | pa=Ka γ’ z |
| B. | pa=Ka γ’ z-γw z |
| C. | pa=Ka γ’ z+γw z |
| D. | pa=Ka γ’ z*γw z |
| Answer» B. pa=Ka γ’ z-γw z | |
| 1638. |
For a submerged backfill, the active earth pressure is given by _________ |
| A. | pa=Kaγ’z |
| B. | pa=Kaγ’z-γwz |
| C. | pa=Kaγ’z+γwz |
| D. | pa=Kaγ’z*γwz |
| Answer» D. pa=Kaγ’z*γwz | |
| 1639. |
The resultant active pressure per unit length of wall for dry backfill with no surcharge acting at _________ above the base of wall. |
| A. | H/2 |
| B. | H |
| C. | H/6 |
| D. | H/3 |
| Answer» E. | |
| 1640. |
The resultant active pressure per unit length of wall for dry backfill with no surcharge is _______ |
| A. | \(P_a=\frac{1}{2}K_aγH^2\) |
| B. | Pa=γH2 |
| C. | Pa=Ka γH2 |
| D. | Pa=Ka H2 |
| Answer» B. Pa=γH2 | |
| 1641. |
For a dry backfill with no surcharge, the active earth pressure intensity is _________ |
| A. | pa=Ka γH |
| B. | pa=γH |
| C. | pa=Ka H |
| D. | pa=Ka γ |
| Answer» B. pa=γH | |
| 1642. |
Which of these is the most frequently used channel of communication? |
| A. | Horizontal communication |
| B. | Diagonal communication |
| C. | Downward communication |
| D. | Upward communication |
| Answer» B. Diagonal communication | |
| 1643. |
Which of these is not a method for upward communication? |
| A. | Open-door policy |
| B. | Complaints |
| C. | Suggestion boxes |
| D. | Scolding |
| Answer» E. | |
| 1644. |
Which of these moves from the grass root level? |
| A. | Downward communication |
| B. | Diagonal communication |
| C. | Upward communication |
| D. | Lateral communication |
| Answer» D. Lateral communication | |
| 1645. |
On the basis of mutual participation, communication is of how many types? |
| A. | Two |
| B. | Three |
| C. | Four |
| D. | Five |
| Answer» B. Three | |
| 1646. |
Buffer capacity is maximum when __________ |
| A. | One mole of NH4Cl is added to two moles of NH4OH |
| B. | One mole of NH4Cl is added to one moles of NH4OH |
| C. | One mole of NH4Cl is added to one mole of NaOH |
| D. | One mole of NaCl is added to one mole of NaOH |
| Answer» C. One mole of NH4Cl is added to one mole of NaOH | |
| 1647. |
The buffer capacity is equal to __________ |
| A. | Δn / ΔpH |
| B. | pH / Δn |
| C. | ± 1pKa |
| D. | ± 2pKa |
| Answer» B. pH / Δn | |
| 1648. |
For an acid buffer solution the pH is 3. The pH can be increased by ____________ |
| A. | Increasing the concentration of salt |
| B. | Increasing the concentration of acid |
| C. | Decreasing the concentration of salt |
| D. | Independent of concentration of acid & salt |
| Answer» B. Increasing the concentration of acid | |
| 1649. |
1M NaCl and 1M HCl are present in an aqueous solution. The solution is ____________ |
| A. | Not a buffer solution with pH < 7 |
| B. | Not a buffer solution with pH > 7 |
| C. | A buffer solution with pH < 7 |
| D. | A buffer solution with pH > 7 |
| Answer» B. Not a buffer solution with pH > 7 | |
| 1650. |
Assertion A: pH of a buffer solution solution does not change on dilution. Reason R: On dilution the ration of concentration of salt and acid (or base) remains unchanged. |
| A. | A and R are true, R is the correct explanation of A |
| B. | A and R are true, R is not correct explanation of A |
| C. | A is true but R is false |
| D. | A is false but R is true |
| E. | remains unchanged.a) A and R are true, R is the correct explanation of Ab) A and R are true, R is not correct explanation of Ac) A is true but R is falsed) A is false but R is true |
| Answer» B. A and R are true, R is not correct explanation of A | |