General-Studies Quiz For FCI Phase I 2022- 28th November

Q1. Which one among the following fuels is used in gas welding?
(a) L P G
(b) Ethylene
(c) Methane
(d) Acetylene
(e) None of the above

Q2. Which one of the following is responsible for converting milk into curd?
(a) Fungi
(b) Bacteria
(c) Virus
(d) None of these
(e) None of the above

Q3. Sweating during exercise indicates operation of which one of the following processes in the human body?
(a) Enthalpy
(b) Phagocytosis
(c) Homeostasis
(d) Osmoregulation
(e) None of the above

Q4. The plant dye Henna imparts orange-red colour to skin and hairs due to its reaction with which of the following?
(a) Proteins and amino acids
(b) Lipids
(c) Carbohydrates
(d) Nucleic acids
(e) None of the above

Q5. Which one of the following is responsible for the stimulating effect of tea?
(a) Tannin
(b) Steroid
(c) Alkaloid
(d) Flavonoid
(e) None of the above

Q6. The gas used in the manufacture of Vanaspati Ghee from Vanasapati Oil is –
(a) Hydrogen
(b) Oxygen
(c) Nitrogen
(d) Carbon dioxide
(e) None of the above

Q7. LPG used as domestic fuel chiefly contains –
(a) Methane
(b) Propane
(c) Ethylene
(d) Butane
(e) More than one of the above

Q8. Which of the following parameters does not characterize the thermodynamic state of matter?
(a) Temperature
(b) Pressure
(c) Work
(d) Volume
(e) None of the above

Q9. One Nanometer is equal to –
(a) 10–9 m
(b) 10–6 m
(c) 10–10 m
(d) 10–3 m
(e) None of the above

Q10. What does airbag, used in safety of car driver, contain?
(a) Sodium bicarbonate
(b) Sodium azide
(c) Sodium nitrite
(d) Sodium peroxide
(e) None of the above

Solutions

S1.Ans. (d)
Sol. Acetylene is the only commercial fuel gas that can be used for both cutting and welding applications.

S2.Ans. (b)
Sol. Curd is made due to the chemical reaction between lactic acid bacteria and casein.

S3.Ans. (b)
Sol. Homeostatic regulation includes sweating. It is the main process through which the body gets coolness.

S4.Ans. (a)
Sol. Henna (Lawsonia intermis) is a flowering plant. It is used to dye skin, hair, fingernails, leather and wood. Colouring feature of henna is due to lawsone, an organic compound that shows affinity for proteins and amino acids in animals.

S5.Ans. (c)
Sol. The stimulating nature of tea is due to alkaloid caffeine found in tea. Caffeine is bitter due to white crystalline xanthine alkaloid.

S6.Ans. (a)
Sol. Vanaspati ghee is manufactured from vegetable oil by a process called ‘hydrogenation’. By passing hydrogen gas. Vegetable Oil contains unsaturated fatty acids; upon hydrogenation it is converted into saturated fatty acids to form vanaspati ghee.

S7.Ans. (e)
Sol. Liquefied Petroleum Gas or LPG consists mainly of propane, propylene, butane, and butylene in various combinations. It is produced as a by-product of natural gas processing and petroleum refining.

S8.Ans. (c)
Sol. The thermodynamic state of a system is defined by specifying values of a set of measurable properties sufficient to determine all other properties. The thermodynamic variables in case of a gas are pressure, temperature, and volume in addition to number of moles.

S9.Ans. (a)
Sol. One nanometre is 1 × 10–9 m. It is also defined as equal to 10 Ao.

S10.Ans. (b)
Sol. Airbag used for safety and protection of car driver possesses sodium azide.