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This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Wt what Celsius temperature is water the densest? |
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Answer» 4 DEGREES CELSIUS |
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| 2. |
Digestion of PROTEINS begins in which of the following human organs?a) small intestines b) colon c) mouth d) stomach |
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Answer» Digestion of PROTEINS begins in STOMACH. |
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| 3. |
What household heating fuel also powers jet planes? |
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Answer» KEROSENE household heating fuel also powers jet planes. |
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| 4. |
Bile has what function in digestion?a) emulsify lipidsb) digest proteins c) gluconeogenesisd) digest carbohydrates |
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Answer» Bile has EMULSIFY LIPIDS unction in digestion. |
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| 5. |
A botanist is most likely to study:a) Monerans b) Protistans c) Fungi d) Virions |
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Answer» A botanist is most likely to study FUNGI . |
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| 6. |
Name TWO sorbents which are used in conventional wet scrubbing processes to remove SO2 produced by combusting coal. |
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Answer» (1) LIME (2) LIMESTONE (3) SODIUM SULFITE OR NaCO3 OR NaOH |
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| 7. |
Name THREE TECHNIQUES for removing particulates from flue gas produced from the combustion of coal? |
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Answer» (1) ELECTROSTATIC PRECIPITATION (ESP) (2) FABRIC FILTER OR BAGHOUSE (3) WET SCRUBBERS (4) MECHANICAL COLLECTORS OR CYCLONES |
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| 8. |
Name THREE gaseous components produced when coal is combusted. |
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Answer» (1) CO2 (2) SO2 (3) NOX (4) H2O |
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| 9. |
Of the following, which is a basic need of all living things?a) oxygen gas b) light c) hydrogen gas d) water |
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Answer» WATER is a basic need of all living things. |
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| 10. |
Which continent has the largest KNOWN deposits of coal? |
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Answer» NORTH AMERICA |
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| 11. |
Which is false regarding freshwater fish?a) their blood is hypertonic to their environment b) they often actively take up salt c) they excrete urine hypotonic to the blood d) their gills actively excrete salts |
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Answer» THEIR GILLS ACTIVELY EXCRETE SALTS |
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| 12. |
Name three basic morphologies of bacteria. |
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Answer» (1) COCCI (COCCUS), (2) BACILLI (BACILLUS) or ROD, (3) SPIROCHETES or SPIRILLA or SPIRAL |
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| 13. |
The majority of the U.S. electricity generating plant use what thermodynamic cycle? |
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Answer» The majority of the U.S. electricity generating plant use RANKINE. |
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| 14. |
Neutral fats, oils and waxes may be classified as:a) lipids b) carbohydrates c) proteins d) none of the above |
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Answer» Neutral fats, oils and waxes may be classified as LIPIDS. |
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| 15. |
Name a component of gasoline that has been classified by the U.S. EPA as a "known human carcinogen". |
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Answer» XENZENE has been classified by the U.S. EPA as a "known human carcinogen". |
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| 16. |
What are the names of the cycles in a 4-stroke gasoline engine? |
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Answer» COMPRESSION; IGNITION; POWER; EXHAUST (take in any order) |
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| 17. |
What is the principal liquid used in automotive antifreeze? |
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Answer» ETHYLENE GLYCOL |
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| 18. |
"Fool's gold" is a common name for this mineral: w) halite x) cinnabar y) magnetite z) pyrite |
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Answer» "Fool's gold" is a common name for PYRITE. |
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| 19. |
A device used to measure the amount of moisture in the atmosphere is called a:w) hydrometer (pron: high-dro-me-ter) x) hygrometer (pron: high-gro-me-ter) y) anemometer z) barometer |
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Answer» HYGROMETER.. |
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| 20. |
What common flavoring comes from the long slender fruit of a climbing orchid? |
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Answer» VANILLA flavoring comes from the long slender fruit of a climbing orchid. |
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| 21. |
What is the approximate weight in pounds of the atmosphere on a 1sq. ft. surface at sea level? w) 15 lbs. x) 1500 lbs. y) 2100 lbs. z) 20,000 lbs. |
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Answer» 2100 LBS weight in pounds of the atmosphere on a 1sq. ft. surface at sea level. |
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| 22. |
यदि 5 व्यक्ति मिलकर 5 घंटे में 5 चटाईयाँ बना सकते है। तो 10 व्यक्ति 10 घंटे में कितनी चटाईयाँ बनायेगे ?A. 20 mats (चटाईयाँ)B. 10 mats (चटाईयाँ)C. 15 mats (चटाईयाँ)D. 5 mats (चटाईयाँ) |
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Answer» Correct Answer - A `(m_(1)xxh_(1))/(w_(1))=(m_(2)xxh_(2))/(w_(2))` `(5xx5)/(5)=(10xx10)/(w_(2))` `w_(2)=20` |
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| 23. |
A line may not be __________(a) parallel to both the planes(b) parallel to one plane and perpendicular to the other(c) parallel to one plane and inclined to the other(d) perpendicular to both the planes |
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Answer» The correct answer is (d) perpendicular to both the planes The explanation: The question is asking about a single line and if a line is perpendicular to both the planes it will never be resembled as a line i.e. it can’t be a single line. If it becomes perpendicular to the planes it will become perpendicular to itself thus forming two lines, as the single to will itself make 90 angle it can’t be further called as a single line. |
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| 24. |
In which of the following projection depth is not shown?(a) Oblique projection(b) Isometric projection(c) Perspective projection(d) Orthographic projection |
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Answer» The correct answer is (d) Orthographic projection To explain: In the above starting 3 methods, these represents the object by a pictorial view as eyes see it. In these methods of projection a 3-d object is represented on a projection plane by one view only. While in the orthographic projection an object is represented by 2 or 3 views on the mutual perpendicular projection plane. Each projection view represents 2-D of an object. |
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| 25. |
The ____________ is the plane upon which the side view is projected.(a) Horizontal plane(b) Profile plane(c) Vertical plane(d) Inclined plane |
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Answer» Correct option is (b) Profile plane To elaborate: A third plane perpendicular to both coordinate planes, and hence to the ground line, is called a profile plane. This plane is vertical in position, and may be used as a plane of projection. A projection on the profile plane is called a profile view, or end view, or sometimes edge view, and is often required in machine or other drawing when the plan and elevation do not sufficiently give the shape and dimensions. |
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| 26. |
On projection of a cylinder on a plane, the shape appeared by front view will be _____________(a) line(b) square(c) point(d) rectangle |
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Answer» Correct answer is (d) rectangle The explanation is: When the solid is placed with the base on HP position, in the top view, the base will be projected in its true shape. Hence, when the base of the solid is on HP, the top view is drawn first and then the front view and the side views are projected from it. Figure 10 shows a cylinder with its axis perpendicular to HP. There is only one position in which a cylinder or a cone may be placed with its base on HP. |
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| 27. |
When a plane surface is inclined to any plane of projection, the view of the plane surface projected on it will be its ____________(a) point shape(b) true shape(c) straight line(d) apparent shape |
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Answer» Correct choice is (d) apparent shape To explain I would say: An inclined surface is a surface that is perpendicular to one of the principal planes, and is at some angle to the remaining two principal planes. As such, an inclined surface will always appear as a line in one of the principal views and as a foreshortened area in the other two views. An inclined surface will not appear true size in a principal view. |
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| 28. |
A particle straight line passes through origin and a point whose abscissa is double of ordinate of the point. The equation of such straight line is :A. `y= (x)/(2)`B. `y = 2x`C. `y = -4x`D. `y= -(x)/(4)` |
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Answer» Correct Answer - A Abscissa (x) = 2 [ordinate (y)] `rArr x= 2y rArr y = (x)/(2)` |
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| 29. |
A point moves in such a manner that three times of its abscissa is greater by 5 than two times of its ordinate; find the equation of its locus.(a) 3y-2y=5(b) 3x-2y=5(c) 2x+3y=5(d) 2x-3y=5 |
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Answer» Right option is (b) 3x-2y=5 Explanation: Here the terms abscissa and ordinate are the coordinates of a point in a two- dimensional rectangular Cartesian coordinate system where abscissa represents x-axis and ordinate as y-axis. So according to the given question the equation is as follows: 3x-2y=5. |
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| 30. |
the abscissa and ordinate of the origin are |
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Answer» Coordinates of origin is (0,0). X- coordinate of a point is abscissa and Y- coordinate is ordinate. |
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| 31. |
If `x^(2) - x+ 1 =0, sum_(n=1)^(5) (x^(n) +(1)/(x^(n)))` equals -A. 8B. 10C. 12D. 14 |
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Answer» Correct Answer - 1 `x = - omega,- omega^(2) rArr x + (1)/(x) = 1, x^(2) +(1)/(x^(2)) = -1`, `x^(3) + (1)/(x^(3)) = - 2 ,x+(1)/(x^(4)) = -1, x^(5) +(1)/(x^(5))=1` `underset(n=1)overset(5)sum (x^(n)+(1)/(x^(n)))^(2)` `=(1)^(2) +(-1)^(2) +(-2)^(2)+(-1)^(2)+(1)^(2)` `= 1+1+ 4+ 1+1` =8 |
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| 32. |
A speaks truth in 605 cases and `B`speaks truth in 70% cases. The probability that they will say the samething while describing a single event is`2//19`b. `3//29`c. `17//19`d. `4//29`A. 0.56B. 0.54C. 0.38D. 0.94 |
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Answer» Correct Answer - B Consider the following events : `A_(1):a` speaks truth `A_(2):B` speaks truth then ,`P(A_(1))=60//100=3//5,P(A_(2))=70//100=7//10` for the required event either both of then should Speck the truth or both of them should tell a lie thus , the required probaility is `P((A_(1)nnA_(2))cup(barA_(1)nnbarA_(2)))` `=p(barA_(1)nnA_(2))+P(barA_(1)nnbarA_(2))` `=P(A_(1))P(A_(2))+P(barA_(1)nn barA_(2))` ` =P(A_(1))P(A_(2))+P(barA_(1))P(barA_(2))` `(3)/(5)xx(7)/(10)+(1-(3)/(5))(1-(7)/(10))` `=0.54` |
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| 33. |
A uniform rod of length 200 cm and mass 500 g is balanced on a wedge placed at 40 cm mark. A mass of 2 kg is suspended from the rod at 20 cm and another unknown mass 'm' is suspended from the rod at 160 cm mark as shown in the figure. Find the value of 'm' such that the rod is in equilibrium. (g = 10 m/s2) |
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Answer» By balancing torque 2g × 20 = 0.5g × 60 + mg × 120 m = \(\frac{0.5}{6}\) kg = \(\frac{1}{2}\) kg |
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| 34. |
Evaluate ∫∫s(axi + byj + czk).n d S where S is the surface of the sphere x2 + y2 + z2 = 1. |
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Answer» \(\int\int_S\) (ax\(\hat i\) + by \(\hat j\) + c z\(\hat k\)) . \(\hat n\) ds = \(\int\int\int_V\) (\(\vec\bigtriangledown.\vec F\)) dV, where \(\vec F\) = ax\(\hat i\) + by \(\hat j\) + c z\(\hat k\) = \(\int\int\int_V\) (a + b + c) dx dy dz (\(\because\) dV = dx dv dz and \(\vec\bigtriangledown\) = \(\hat i\) \(\cfrac{\partial}{\partial x}\) + \(\hat j\) \(\cfrac{\partial}{\partial y}\) + \(\hat k\) \(\cfrac{\partial}{\partial z}\)) = (a + b + c) \(\int\int\int_V\) dx dy dz ( V is volume enclosed by sphere x2 + y2 + z2 = 1) = (a + b + c) \(\cfrac43\) \(\pi\) x 13 ( \(\because\) Radius of sphere x2 + y2 + z2 = 1 is r = 1) (\(\therefore\) volume = \(\cfrac43\) \(\pi\) . 13) = \(\cfrac43\) (a + b + c) \(\pi\) |
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| 35. |
C2h5cho and (ch3)2 co can be distinguished by testing with A) phenylhydrazine B) hydroxylamine C ) fehling solutionD) sodium bisulphitePlease sir answer me soon |
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Answer» Optio C Explanation As C2H5CHO contains reducing carbonyl group -CHO. It will reduce Fehling's sollution .But other substance does not contain any reducing group . So it does not respond to this test. |
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| 36. |
If y = tan-1√(1 + x2 - 1)/x then dy/dx(D) None of these |
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Answer» (A) 1/2(1 + x2) |
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| 37. |
|(sin 30º,cos 30º),(-sin 60º, cos 60º)| = ?(a) 1 (b) 0(c) 3/2(d) 1/2 |
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Answer» Correct option: (a) 1 |
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| 38. |
If y = tan-1√ (1 - cos x)/(1 + cos x) then dy/dx = ?(a) -1/2(b) 1/2(c) 1/(1 + x2)(d) None of these |
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Answer» Correct option: (b) 1/2 |
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| 39. |
If x + y = sin (x + y) then dy/dx = ?(a) –1 (b) 1(c) 1 - cos(x + y)/sin2(x + y)(d) None of these |
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Answer» Correct option: (a) –1 |
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| 40. |
If P (A) = 0·8, P(B) = 0·5 and P(B/A) = 0.4 then P(A/B) = ?(a) 0·32 (b) 0·64 (c) 0·16 (d) 0·25 |
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Answer» Correct option: (b) 0·64 |
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| 41. |
Solve: 5.4/109.9×100 |
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Answer» \(\frac{5.4}{109.9} \times 100\) = \(\frac{540}{109.9}\) = 4.91 |
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| 42. |
Which Word is Different?shirt, bag, pants, tie, hat |
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Answer» Correct answer is bag |
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| 43. |
To double the covering range of a TV transmission tower, its height should be multiplied by :(1) 2(2) 1/√2(3) 4(4) √2 |
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Answer» Correct option: (3) 4 Explanation: Range = √2gh If h become 4h then range become double. |
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| 44. |
The metal d-orbitals that are directly facing the ligands in K3[Co(CN)6] are : (1) dxy and dx2–y2 (2) dxy, dxz and dyz (3) dxz, dyz and dz2 (4) dx2–y2 and dz2 |
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Answer» The correct option (4) dx2–y2 and dz2 Explanation: In octahedron complex, ligand approach axially. So energy of axial d-orbitals is raised. dx2y2; dz2. |
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| 45. |
Which of the following does not comes under the product of Recombinant mammalian cells?(a) Bovine somatotropin(b) Erythropoietin(c) Growth hormone(d) Tissue plasminogen activator |
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Answer» The correct answer is (a) Bovine somatotropin Explanation: Bovine somatotropin is the peptide hormone produced by cows pituitary gland and is used in regulating metabolic processes and mainly comes under the animal recombinants. |
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| 46. |
According to the small size of the particle, which type of chromatographic separation is applicable?(a) High- performance liquid chromatography (HPLC)(b) Fast protein liquid chromatography (FPLC)(c) Gel chromatography(d) Paper chromatography |
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Answer» Correct choice is (a) High- performance liquid chromatography (HPLC) To explain I would say: In order to achieve the high resolutions characteristic of HPLC, stationary-phase particles 2-5 μm in diameter are commonly used. Because the particles are so small, HPLC systems are operated under high pressure (5-10 MPa) to achieve flow rates of 1-5 ml min -1. FPLC instruments are not able to develop such high pressures (1-2 MPa) and are therefore operated with column packings of larger size. |
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| 47. |
Which of the following comes under the Downstream Process?(a) Inoculum preparation(b) Equipment sterilization(c) Media Formulation(d) Separation |
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Answer» The correct answer is (d) Separation Easy explanation: Separation is the first step in product recovery in downstream processing as it involves the separation of desired cells from the culture medium and which is mechanically done by Rotary Drum Filter. |
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| 48. |
In 500 × g, what does g represent in accordance to centrifugation?(a) Gravitational force(b) Centrifugal force is 500 times greater than earthly gravitational force(c) Centrifugal force is 500 times less than earthly gravitational force(d) Centrifugal force is 500 times same as that of earthly gravitational force |
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Answer» Right answer is (b) Centrifugal force is 500 times greater than earthly gravitational force The best explanation: Centrifuge is any device that applies a sustained centrifugal force; that is, a force due to rotation. Effectively, the centrifuge substitutes a similar, stronger, force for that of gravity. When a suspension is rotated at a certain speed or revolutions per minute (RPM), centrifugal force causes the particles to move radially away from the axis of rotation. The force on the particles (compared to gravity) is called Relative Centrifugal Force (RCF). For example, an RCF of 500 x g indicates that the centrifugal force is 500 times greater than earthly gravitational force. |
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| 49. |
A wedge (inclination `theta = 30^(@)` from horizontal) is moving with an acceleration `a = 4 m//s^(2)` vertically up as shown in figure. What is acceleration of block of mass 1 kg w.r.t & reaction by wedge on block respectively. All surface are smooth. Choose correct pair : `(g = 10 m//s^(2))` A. `7m//s^(2), 7sqrt(3) N`B. `5 m//s^(2), 5sqrt(3) N`C. `4.9 m//s^(2), 4.9sqrt(3) N`D. `10 m//s^(2), 10sqrt(3) N` |
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Answer» Correct Answer - A In the frame of wedge acceleration `= (g+a) sin theta = 7 m//s_(2)` Normal reaction `m(g +a) cos theta = 7 sqrt(3) N`. |
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| 50. |
A wedge (inclination `theta = 30^(@)` from horizontal) is moving with an acceleration `a = 4 m//s^(2)` vertically up as shown in figure. What is acceleration of block of mass 1 kg w.r.t & reaction by wedge on block respectively. All surface are smooth. Choose correct pair : `(g = 10 m//s^(2))` A. `7 m//s^(2),7 sqrt(3)N`B. `5 m//s^(2),5 sqrt(3)N`C. `4.9 m//s^(2),4.9 sqrt(3)N`D. `10 m//s^(2),10 sqrt(3)N` |
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Answer» Correct Answer - A In the frame of wedge acceleration `= (g+a) sin theta = 7 m//s_(2)` Normal reaction `m(g +a) cos theta = 7 sqrt(3) N`. |
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