General-Studies Quiz For FCI Phase I 2022- 11th October

Q1. A jet engine works on the principle of conservation of
(a) linear momentum
(b) angular momentum
(c) energy
(d) mass
(e) None of the above

Q2. Which one among the following cell organelles is semipermeable?
(a) Cell membrane
(b) Plasma membrane
(c) Cell wall
(d) Nucleus
(e) None of the above

Q3. Which one of the following forms an irreversible complex with haemoglobin of the blood?
(a) Carbon dioxide
(b) Pure Nitrogen gas
(c) Carbonmonoxide
(d) a mixture of carbon dioxide and helium
(e) None of the above

Q4. The hypo solution used in photography is the aqueous solution of
(a) sodium thiosulphate
(b) sodium tetrathionate
(c) sodium sulphate
(d) ammonium per sulphate
(e) None of the above

Q5. Which one of the following compounds is used as a sedative?
(a) Potassium bromide
(b) Calcium chloride
(c) Ethyl alcohol
(d) Phosphorus trichloride
(e) None of the above

Q6. Indane gas is a mixture of
(a) butane and hydrogen
(b) butane and oxygen
(c) butane and propane
(d) methane and oxygen
(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. One feels heavier in a lift when the lift
(a) is going down steadily
(b) just begins to go up
(c) is moving up steadily
(d) descends freely
(e) None of the above

Q9. The lift of an air plane is based on
(a) Torricelli’s theorem
(b) Bernoulli’s theorem
(c) Law of gravitation
(d) Conservation of linear momentum
(e) None of the above

Q10. The working principle of a washing machine is
(a) centrifugation
(b) dialysis
(c) reverse osmosis
(d) diffusion
(e) None of the above

Solutions

S1.Ans. (a)
Sol. A jet engine works on the principle of conservation of linear momentum. In jet engines, a large volume of gases produced by the combustion of fuel is allowed to escape through a jet in the backward direction. Due to the very high speed or velocity, the backward rushing gases have a very large momentum.

S2.Ans. (d)
Sol. Among the given example only nucleus is a cell organelle. Which bears DNA the genetic material which carries the characteristics which are transported from the parent to offspring.

S3.Ans. (c)
Sol. Carbon monoxide gas forms an irreversible complex with the haemoglobin of the blood.

S4.Ans. (a)
Sol. Chemical formula of sodium thiosulphate is Na2S2O3 5H2O. It is also called as Hypo. It is used for fixing negative in photography. It leads to the removable of silver bromide.

S5.Ans. (a)
Sol. Potassium bromide is used as sedative.

S6.Ans. (c)
Sol. L.P.G. is a mixture of Propane and Butane and Iso butane of hydrocarbons. It is used for Cooking in Houses. These Gases are in liquid form at a Very high temperature. This mixture of liquid hydrocarbons is called as L.P.G.

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. (b)
Sol. One feels heavier in a lift when the lift just begins to go up because our body gains inertia from the position of rest and pushes up against the gravity so here the weight becomes zero and our mass makes us feel heavier.

S9.Ans. (b)
Sol. The lift of an air plane is based on Bernoulli’s theorem. Bernoulli’s theorem implies, therefore, that if the fluid flows horizontally so that no change in gravitational potential energy occurs, then a decrease in fluid pressure is associated with an increase in fluid velocity.

S10.Ans. (a)
Sol. Washing machine works on the principle of centrifugation. Centrifugation is a process that involves the use of the centrifugal force for the separation of mixtures with a centrifuge, used in industry and in laboratory settings. More-dense components of the mixture migrate away from the axis of the centrifuge, while less-dense components of the mixture migrate towards the axis.