MCQOPTIONS
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MCQOPTIONS
This section includes 49 Mcqs, each offering curated multiple-choice questions to sharpen your UPSEE knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Four particles A, B, C, and D with masses mA = m, mB = 2m, mC = 3m and mD = 4m are at the corners of a square. They have accelerations of equal magnitude with directions as shown. The acceleration of the center of mass of the particles is: |
| A. | \(\frac{a}{5}\left( \hat{i}+\hat{j} \right)\) |
| B. | \(\text{a}\left( \hat{i}+\hat{j} \right)\) |
| C. | Zero |
| D. | \(\frac{\text{a}}{5}\left( \hat{i}-\hat{j} \right)\) |
| Answer» E. | |
| 2. |
Let \(\left| {\overrightarrow {{{\rm{A}}_1}} } \right| = 3,\;\left| {\overrightarrow {{{\rm{A}}_2}} } \right| = 5{\rm{\;and\;}}\left| {\overrightarrow {{{\rm{A}}_1}} + \overrightarrow {{{\rm{A}}_2}} } \right| = 5\). The value of \(\left( {2\overrightarrow {{{\rm{A}}_1}} + 3\overrightarrow {{{\rm{A}}_2}} } \right) \cdot \left( {3\overrightarrow {{{\rm{A}}_1}} - 2\overrightarrow {{{\rm{A}}_2}} } \right)\) is: |
| A. | -106.5 |
| B. | -99.5 |
| C. | -118.5 |
| D. | -112.5 |
| Answer» D. -112.5 | |
| 3. |
A particle moves from the point \(\left( {2.0\hat i + 4.0\hat j} \right)\) m at t = 0 with an initial velocity \(\left( {5.0\hat i + 4.0\;\hat j} \right)m{s^{ - 1}}\). It is acted upon by a constant force which produces a constant acceleration \(\left( {4.0\;\hat i + 4.0\;\hat j} \right)m{s^{ - 2}}\). What is the distance of the particle from the origin at time 2 s? |
| A. | 5 m |
| B. | \(20\sqrt 2 m\) |
| C. | \(10\sqrt 2 m\) |
| D. | 15 m |
| Answer» C. \(10\sqrt 2 m\) | |
| 4. |
In the cube of side 'a' shown in the figure, the vector from the central point of the face ABOD to the central point of the face BEFO will be |
| A. | \(\frac{1}{2}a\left( {\hat i - \hat k} \right)\) |
| B. | \(\frac{1}{2}a\left( {\hat j - \hat i} \right)\) |
| C. | \(\frac{1}{2}a\left( {\hat j - \hat k} \right)\) |
| D. | \(\frac{1}{2}a\left( {\hat k - \hat i} \right)\) |
| Answer» C. \(\frac{1}{2}a\left( {\hat j - \hat k} \right)\) | |
| 5. |
Find the unit vector perpendicular to the surface x2 + y2 – z2 = 11 at the point (4, 2, 3). |
| A. | 8î + 4ĵ -6k̂ |
| B. | \(\frac{{4\widehat i + 2\widehat j - 3\widehat k}}{{\sqrt {29} }}\) |
| C. | \(\frac{{8\widehat i +4\widehat j - 6\widehat k}}{{\sqrt {29} }}\) |
| D. | \(\frac{{4\widehat i - 2\widehat j - 3\widehat k-11}}{{\sqrt {116} }}\) |
| Answer» C. \(\frac{{8\widehat i +4\widehat j - 6\widehat k}}{{\sqrt {29} }}\) | |
| 6. |
Consider the following physical quantities:Energy, power, pressure, impulse, temperature, gravitational potential. Which of the above is/are the vector quantity/quantities? |
| A. | Impulse only |
| B. | Impulse and pressure only |
| C. | Impulse, temperature and pressure |
| D. | Gravitational potential |
| Answer» B. Impulse and pressure only | |
| 7. |
A particle is moving with a velocity \(v = K\left( {y\hat i + x\hat j} \right)\) where K is a constant. The general equation for its path is: |
| A. | y = x2 + constant |
| B. | y2 = x + constant |
| C. | y2 = x2 + constant |
| D. | xy = constant |
| Answer» D. xy = constant | |
| 8. |
If two forces of 5N each are acting along X and Y-axis then the magnitude and direction of resultant is |
| A. | \(5\sqrt{2}, \pi/3\) |
| B. | \(5\sqrt{2}, \pi/4\) |
| C. | \(-5\sqrt{2}, \pi/3\) |
| D. | \(-5\sqrt{2}, \pi/4\) |
| Answer» C. \(-5\sqrt{2}, \pi/3\) | |
| 9. |
If two vectors \(\vec{A}=6\hat{i}-8\hat{j}+4\hat{k}\) and \(\vec{B}=4\hat{i}-6\hat{j}+p\hat{k}\) are mutually perpendicular, then value of p is |
| A. | -9 |
| B. | -18 |
| C. | +4 |
| D. | 0 |
| Answer» C. +4 | |
| 10. |
Cos site of the cosmids |
| A. | consists of 12 bases |
| B. | helps whole genome in circularization and ligation |
| C. | both (a) and (b) |
| D. | contains cleavage site |
| Answer» D. contains cleavage site | |
| 11. |
Plasmids which are maintained as limited number of copies per cell are known as |
| A. | stringent plasmids |
| B. | relaxed plasmids |
| C. | cryptic plasmids |
| D. | all of these |
| Answer» B. relaxed plasmids | |
| 12. |
Size of the DNA that can be packaged into a λ phage is |
| A. | 50 kb |
| B. | 35-53 kb |
| C. | 40-50 kb |
| D. | any size |
| Answer» C. 40-50 kb | |
| 13. |
Which of the following is not true about phagemid? |
| A. | Contain functional origin of replication of the plasmid and λ phage |
| B. | May be propagated as a plasmid or as phage in appropriate strain |
| C. | Contain λ att site |
| D. | Can only be propagated as phage |
| Answer» E. | |
| 14. |
Stuffer is |
| A. | the right arm of the vector DNA |
| B. | the left arm of the vector DNA |
| C. | central fragment of the vector DNA |
| D. | none of the above |
| Answer» D. none of the above | |
| 15. |
pBR 322 has/have which of the following selection marker(s)? |
| A. | Ampr |
| B. | Tetr |
| C. | Both (a) and (b) |
| D. | Kanr |
| Answer» D. Kanr | |
| 16. |
Difference between λ gt 10 and λ gt 11 vectors is that |
| A. | λ gt 11 is an expression vector |
| B. | λ gt 10 is an expression vector |
| C. | λ gt 10 is a replacement vector |
| D. | λ gt 11 is a replacement vector |
| Answer» B. λ gt 10 is an expression vector | |
| 17. |
λ gt 10 and λ gt 11 vectors can propagate cloned fragments up to |
| A. | 6-7 kb |
| B. | 1-2 kb |
| C. | 40-44 kb |
| D. | 20-23 kb |
| Answer» B. 1-2 kb | |
| 18. |
EMBL 3 and EMBL 4 are replacement vectors, which can clone DNA up to |
| A. | 6-7 kb |
| B. | 15-25 kb |
| C. | 40-44 kb |
| D. | 1-2 kb |
| Answer» C. 40-44 kb | |
| 19. |
Phagemid consist of |
| A. | plasmid vector carrying λ phage's cos site |
| B. | plasmid vector carrying λ attachment (λ att) site |
| C. | plasmid vector carrying origin of replication of λ phage only |
| D. | plasmid vector carrying origin of replication of plasmid only |
| Answer» C. plasmid vector carrying origin of replication of λ phage only | |
| 20. |
Maximum size of foreign DNA that can be inserted into a replacement vector is |
| A. | 25-30 kb |
| B. | 18-20 kb |
| C. | 20-25 kb |
| D. | 40-50 kb |
| Answer» D. 40-50 kb | |
| 21. |
λ ZAP vector is an example of |
| A. | phage |
| B. | phagemid |
| C. | cosmid |
| D. | plasmid |
| Answer» C. cosmid | |
| 22. |
Cosmid vectors are used for |
| A. | cloning small fragments of DNA |
| B. | cloning large fragments of DNA |
| C. | cloning prokaryotic DNA only |
| D. | cloning eukaryotic DNA only |
| Answer» C. cloning prokaryotic DNA only | |
| 23. |
Conjugative plasmids |
| A. | exhibit antibiotic resistance |
| B. | do not exhibit antibiotic resistance |
| C. | carry transfer genes called the tra genes |
| D. | do not carry transfer genes |
| Answer» D. do not carry transfer genes | |
| 24. |
Cosmid vectors are |
| A. | plasmids that contain fragment of λ DNA including the cos site |
| B. | phages that lack cos site |
| C. | plasmids that have no selection marker |
| D. | cryptic plasmids |
| Answer» B. phages that lack cos site | |
| 25. |
Charon 34 and Charon 35 are the examples of |
| A. | plasmid vector |
| B. | cosmid vector |
| C. | phage vector |
| D. | phagemid vector |
| Answer» D. phagemid vector | |
| 26. |
Cryptic plasmids |
| A. | do not exhibit any phenotypic trait |
| B. | exhibit many phenotypic traits |
| C. | exhibit one phenotypic traits |
| D. | exhibit antibiotic resistance |
| Answer» B. exhibit many phenotypic traits | |
| 27. |
Single stranded vectors are useful |
| A. | for sequencing of cloned DNA |
| B. | for oligonucleotide directed mutagenesis |
| C. | for probe preparation |
| D. | all of the above |
| Answer» E. | |
| 28. |
Inserted DNA in λ gt 11 can be expressed as |
| A. | β-galactosidase fused protein |
| B. | free protein in the cytoplasm |
| C. | free protein that is secreted out |
| D. | all of the above |
| Answer» B. free protein in the cytoplasm | |
| 29. |
Phagemid vectors are |
| A. | combination of plasmid and phage λ |
| B. | combination of phages and cosmid |
| C. | phages carrying properties of plasmids |
| D. | all of the above |
| Answer» B. combination of phages and cosmid | |
| 30. |
A plasmid can be considered as a suitable cloning vector if |
| A. | it can be readily isolated from the cells |
| B. | it possesses a single restriction site for one or more restriction enzymes |
| C. | insertion of foreign DNA does not alter its replication properties |
| D. | All of the above |
| Answer» E. | |
| 31. |
M 13 is an example of |
| A. | filamentous phage |
| B. | single stranded DNA vector |
| C. | both (a) and (b) |
| D. | plasmid |
| Answer» D. plasmid | |
| 32. |
Select the wrong statement about plasmids? |
| A. | It is extrachromosomal |
| B. | It is double stranded |
| C. | Its replication depends upon host cell |
| D. | It is closed and circular DNA |
| Answer» D. It is closed and circular DNA | |
| 33. |
Cosmids lack |
| A. | genes coding for viral proteins |
| B. | origin of replication |
| C. | marker genes coding for replication |
| D. | cleavage site for the insertion of foreign DNA |
| Answer» B. origin of replication | |
| 34. |
Plasmids which are maintained as multiple copy number per cell are known as |
| A. | stringent plasmids |
| B. | relaxed plasmids |
| C. | cryptic plasmids |
| D. | none of these |
| Answer» C. cryptic plasmids | |
| 35. |
Maximum size of foreign DNA that can be inserted into an insertion vector is |
| A. | 35 kb |
| B. | 18 kb |
| C. | 50 kb |
| D. | 27 kb |
| Answer» C. 50 kb | |
| 36. |
Charon vectors are different from EMBL vectors because |
| A. | they have more extensive range of restriction targets with in their polylinkers. |
| B. | physical separation of lambda arm from central fragment is required |
| C. | both (a) and (b) |
| D. | physical separation of lambda arm from central fragment is not required |
| Answer» D. physical separation of lambda arm from central fragment is not required | |
| 37. |
Charon 34 and Charon 35 can clone DNA upto |
| A. | 1-2 kb |
| B. | 6-7 kb |
| C. | 9-20 kb |
| D. | 30-35 kb |
| Answer» D. 30-35 kb | |
| 38. |
P1 cloning vector allow cloning of DNA of the length of |
| A. | 100 kbp |
| B. | 50 kbp |
| C. | 20 kbp |
| D. | 10 kbp |
| Answer» B. 50 kbp | |
| 39. |
Plasmid incompatibility is |
| A. | inability of a plasmid to grow in the host |
| B. | inability of two different plasmids to coexist in the same host cell in the absence of selection pressure. |
| C. | both (a) and (b) |
| D. | none of the above |
| Answer» C. both (a) and (b) | |
| 40. |
P1 cloning vector is the example of |
| A. | plasmid |
| B. | cosmid |
| C. | bacteriophage |
| D. | phagemid |
| Answer» D. phagemid | |
| 41. |
Walking off a man is an example of |
| A. | Resolution of forces |
| B. | Addition of vectors |
| C. | Subtraction of vectors |
| D. | Multiplication of vectors |
| Answer» B. Addition of vectors | |
| 42. |
Two forces whose magnitudes are in ratio of 3:5 give a resultant of 35N. If the angle of inclination is 60°, calculate the magnitude of each force. |
| A. | 15N and35N |
| B. | 15N and 25N |
| C. | 10N and 15N |
| D. | 20N and 5N |
| Answer» C. 10N and 15N | |
| 43. |
Flying a bird is an example of |
| A. | Collinear vector |
| B. | Multiplication of vector |
| C. | Addition of vector |
| D. | Composition of vector |
| Answer» E. | |
| 44. |
Which have the following has zero magnitude? |
| A. | Fixed vector |
| B. | Zero vector |
| C. | Modulus of a vector |
| D. | Unit vector |
| Answer» C. Modulus of a vector | |
| 45. |
What is the magnitude of a unit vector? |
| A. | It has no magnitude |
| B. | Zero |
| C. | Constant but not zero |
| D. | Unity |
| Answer» E. | |
| 46. |
Which of the following acts in accordance with right hand screw rule? |
| A. | Polar vector |
| B. | Axial vector |
| C. | Displacement vector |
| D. | Position vector |
| Answer» C. Displacement vector | |
| 47. |
A polar vector is one which |
| A. | Gives the position of an object |
| B. | Tells how much and in which direction an object has changed its position |
| C. | Represents rotational effect |
| D. | Has a starting point of application |
| Answer» E. | |
| 48. |
Force is a vector quantity. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 49. |
The quantity which has the only magnitude is called |
| A. | A scalar quantity |
| B. | A vector quantity |
| C. | A chemical quantity |
| D. | A magnitude quantity |
| Answer» B. A vector quantity | |