General-Studies Quiz For FCI Phase I 2022- 17th December

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 of the following statements about gravitational force is NOT correct?
(a) It is experienced by all bodies in the universe
(b) It is a dominant force between celestial bodies
(c) It is a negligible force for atoms
(d) It is same for all pairs of bodies in our universe
(e) None of the above

Q7. Whether an object will float or sink in a liquid, depends on
(a) mass of the object only
(b) mass of the object and density of liquid only
(c) difference in the densities of the object and liquid
(d) mass and shape of the object only
(e) None of the above

Q8. A long jumper runs before jumping because he
(a) covers a greater distance
(b) maintains momentum conservation
(c) gains energy by running
(d) gains momentum
(e) None of the above

Q9. In plants, which one of the following tissues is dead?
(a) Parenchyma
(b) Collenchyma
(c) Sclerenchyma
(d) Phloem
(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. (d)
Sol. The gravitational force is a force that attracts any objects with mass. This is called Newton’s Universal Law of Gravitation. The gravitational force on Earth is equal to the force the Earth exerts on you. At rest, on or near the surface of the Earth, the gravitational force equals your weight.

S7.Ans. (c)
Sol. Whether an object will float or sink in a liquid, depends on difference in the densities of the object and liquid.

S8.Ans. (b)
Sol. A long jumper runs before jumping to maintain momentum. This helps in jumping higher and longer because of inertia of motion gained due to the motion.

S9.Ans. (c)
Sol. Sclerenchyma tissues are found in hard parts of plant body, in cortex, pith, hypodermis, in the pulp of fruits. Young cells are living and they have protoplasm. But matured cells becomes dead due to deposition of secondary walls. They give mechanical support, strength and rigidity to the plant body.

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.