General-Studies Quiz For FCI Phase I 2022- 16th October

Q1. Conservation of momentum in a collision between particles can be understood on the basis of:
(a) Newton ‘s first law of motion
(b) Newton ‘s second law of motion only
(c) Both Newton’s second law of motion and Newton’s third law of motion
(d) Conservation of energy
(e) None of the above

Q2. Which one of the following is the SI unit of the thermal conductivity of a material?
(a) Wm-1K-1
(b) Wm/K
(c) Wm-1/K-1
(d) Js-1m-1K
(e) None of the above

Q3. Conservation of momentum in a collision between particles can be understood on the basis of:
(a) Newton ‘s first law of motion
(b) Newton ‘s second law of motion only
(c) Both Newton’s second law of motion and Newton’s third law of motion
(d) Conservation of energy
(e) None of the above

Q4. Which one among the following happens when a swing rises to a certain height from its rest position?
(a) Its potential energy decreases while kinetic energy increases
(b) Its kinetic energy decreases while potential energy increases
(c) Both potential and kinetic energy decrease
(d) Both potential and kinetic energy increase
(e) None of the above

Q5. If the distance S covered by a moving car in rectilinear motion with a speed v in time t is given by S = vt, then the car undergoes
(a) a uniform acceleration
(b) a non-uniform acceleration
(c) a uniform velocity
(d) a non-uniform velocity
(e) None of the above

Q6. An object moves in a circular path with a constant speed. Which one of the following statements is correct?
(a) The centripetal acceleration of the object is smaller for a gentle curve (i.e., curve of large radius) than that for a sharp curve (i.e., curve of smaller radius).
(b) The centripetal acceleration is greater for a gentle curve than that for a sharp curve.
(c) The centripetal acceleration is the same for both, the gentle and sharp curves.
(d) The centripetal acceleration causes the object to slow down.
(e) None of the above

Q7. Which one of the following is not an explosive matter?
(a) Trinitro toluene
(b) Dinitro glycerine
(c) Cyclo Trimethylene trinitramine
(d) Nitrochloroform
(e) None of the above

Q8. Which one of the following polymers is used for making bullet proof windows?
(a) Polycarbonates
(b) Polyurethanes
(c) Polystyrene
(d) Polyamides
(e) None of the above

Q9. Collar cells occur in
(a) sponges
(b) hydra
(c) sandworm
(d) starfish
(e) None of the above

Q10. Which one of the following statement is not correct?
(a) Water starts boiling when its vapour pressure becomes equal to atmospheric pressure.
(b) Water is known as universal solvent.
(c) Permanent hardness of water is due to presence of MgCl2, CaCl2, MgSO4 and CaSO4.
(d) Density of ice is greater than that of water.
(e) None of the above

Solutions

S1.Ans. (c)
Sol. Conservation of momentum in a collision between particles is dependent on both Newton’s second law of motion and Newton’s third law of motion.

S2.Ans. (a)
Sol. In SI units, thermal conductivity is measured in watts per meter kelvin (W/(m. K)).

S3.Ans. (c)
Sol. Conservation of momentum in a collision between particles is dependent on both Newton’s second law of motion and Newton’s third law of motion.

S4.Ans. (b)
Sol. As the swing rises, its kinetic energy changes to potential energy; as with height potential energy P.E. = mgh increases. And according to law of conservation of energy total energy E = K.E + P. E constant.

S5.Ans. (c)
Sol. As the body moves with a constant speed v along a straight line or rectilinear path hence body undergoes a uniform velocity. Here direction of the moving body is unchanged.

S6.Ans. (a)
Sol. The centripetal acceleration of the object is smaller for a gentle curve (i.e., curve of larger radius) than that for a sharp curve (i.e., curve of smaller radius). The centripetal acceleration is greater for the sharp curve than for the gentle curve. Centripetal Acceleration, ac = v2/r.

S7.Ans. (d)
Sol. Nitrochloroform is a broad-spectrum antimicrobial which is used as a fungicide, herbicide, insecticide and nematicide. It is also known as Chloropicrin.

S8.Ans. (a)
Sol. Bullet-proof windows are constructed using several layers of polycarbonate and/or laminated glass.

S9.Ans. (a)
Sol. Collar cells occurs in sponges and located at the anterior end of each choanocyte.

S10.Ans. (d)
Sol. Ice is less dense in comparison to liquid water. Actually when water freezes, water (H2O) molecules form a crystalline structure by Hydrogen bonds. These bonds cause molecules to push apart lowering the density of water (H2O).