General-Studies Quiz For FCI Phase I 2022- 18th October

Q1. Mesosome in a bacterial cell is
(a) plasmid
(b) connection between two cells
(c) plasma membrane infolded for respiration
(d) None of these
(e) None of the above

Q2. German silver is an alloy of
(a) gold and silver
(b) copper and silver
(c) copper, zinc and silver
(d) copper, zinc and nickel
(e) None of the above

Q3. Which one of the following is used as a mordant in dyeing and tanning industry?
(a) Magnesium oxide
(b) Magnesium carbonate
(c) Magnesium chloride
(d) Magnesium sulphate
(e) None of the above

Q4. Why hard water does not give lather with soap?
(a) Hard water contains calcium and magnesium ions which form precipitate with soap
(b) Hard water contains sulphate and chloride ions which form precipitate
(c) pH of hard water is high
(d) pH of hard water is less
(e) None of the above

Q5. Which of the following are the two main constituents of granite?
(a) Iron and silica
(b) Iron and silver
(c) Silica and aluminium
(d) Iron oxide and potassium
(e) None of the above

Q6. 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

Q7. Why is it difficult to measure the coefficient of expansion of a liquid than solid?
(a) Liquids tend to evaporate at all temperatures
(b) Liquids conduct more heat
(c) Liquids expand too much when heated
(d) Their containers also expand when heated
(e) None of the above

Q8. 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

Q9. The symbol of SI unit of inductance is H. It stands for
(a) Holm
(b) Halogen
(c) Henry
(d) Hertz
(e) None of the above

Q10. Which one of the following physical quantities does NOT affect the resistance of a cylindrical resistor?
(a) The current through it
(b) Its length
(c) The resistivity of the material used in the resistor
(d) The area of cross-section of the cylinder
(e) None of the above

Solutions

S1.Ans. (c)
Sol. In many bacteria (specially gram +ve) the plasma membrane gives rise to infoldings called mesosome. They have respiratory enzymes like succinic dehydrogenase, cytochrome oxidase for respiration.

S2.Ans. (d)
Sol. German silver is an alloy of copper (25-50%), zinc (25- 35%) and nickel (10-35%). It is used in utensils and resistance wire.

S3.Ans. (d)
Sol. Magnesium sulphate (MgSO4) is used as a mordant in dyeing and tanning industry.

S4.Ans. (a)
Sol. The main cause of hardness of water is presence of Ca or Mg ions. When hard water containing these ions is treated with soap solution it reacts to form white crudy ppt known as scum.

S5.Ans. (c)
Sol. Silica and aluminium are the two main constituents of granite. Granite contains 70-77% of silica and 11-13% of aluminium in the form of (Al2O3).

S6.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.

S7.Ans. (d)
Sol. Liquids expand for the same reason, but because the bonds between separate molecules are usually less tight they expand more than solids. This is the principle behind liquid-in-glass thermometers.

S8.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.

S9.Ans. (c)
Sol. The henry (H) is the Standard International (SI) unit of inductance. Reduced to base SI units, one henry is the equivalent of one kilogram meter squared per second squared per ampere squared (kg m 2 s -2 A -2).

S10.Ans. (a)
Sol. R = pL/A. Where p is the resistivity of the material, L is the length and A is the cross sectional area.