General-Studies Quiz For FCI Phase I 2022- 19th December

Q1. 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

Q2. Concave mirror is used in headlights of vehicles, because it
(a) focuses light from the bulb onto nearby vehicles
(b) sends parallel rays
(c) fits well into the shape of the headlight
(d) is cheaper than other mirrors
(e) None of the above

Q3. VIRUS stands for—
(a) Vital information Resource Under Seizure
(b) Vital Information Resource Under Siege
(c) Vital Information Reason Under Siege
(d) Vital Information Under System
(e) Virus Information Recourse Under Siege

Q4. Which one among the following waves carries the maximum enery per photon?
(a) X-rays
(b) Radio waves
(c) Light waves
(d) Microwaves
(e) None of the above

Q5. Which of the following is also used as a lubricant?
(a) Cuprite
(b) Graphite
(c) Haematite
(d) Cryolite
(e) None of the above

Q6. The laughing is –
(a) hydrogen peroxide
(b) nitrous oxide
(c) carbon monoxide
(d) sulphur dioxide
(e) None of the above

Q7. Lightning can even burn a tree because it contains tremendous amount of –
(a) heat energy
(b) electric energy
(c) chemical energy
(d) nuclear energy
(e) None of the above

Q8. An optical illusion which occurs mainly in deserts during hot summer is based on the principle of
(a) Reflection
(b) Interference
(c) Dispersion
(d) Total internal reflection
(e) None of the above

Q9. Which one of the following statements is correct about the magnification of an optical microscope?
(a) Magnification increases with the increase in focal length of eyepiece
(b) Magnification increases with the increase in focal length of objective
(c) Magnification does not depend upon the focal length of eyepiece
(d) Magnification decreases with the increase in focal length of eyepiece
(e) None of the above

Q10. Which one of the following particles has less than 0.002 mm diameter?
(a) Clay
(b) Silt
(c) Fine sand
(d) None of the above
(e) All of the above

Solutions

S1.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.

S2.Ans. (a)
Sol. Concave mirror is used in headlights of vehicles, because it focuses light from the bulb onto nearby vehicles.

S3.Ans. (b)
Sol. Vtiral Information Resources Under Siege.

S4.Ans. (a)
Sol. X-rays are types of electromagnetic radiation probably most well-known for their ability to see through a person’s skin and reveal images of the bones beneath it. X-rays carries the maximum energy per photon.

S5.Ans. (b)
Sol. Graphite is a mineral made of loosely bonded sheets of carbon atoms, giving it a slippery texture that makes it a very effective lubricant.

S6.Ans. (b)
Sol. Nitrous oxide, commonly known as laughing gas or nitrous, is a chemical compound, an oxide of nitrogen with the formula N2O. At room temperature it is colourless, odorless, non – inflammable gas, with a slightly sweet taste.

S7.Ans. (b)
Sol. Lightning can even burn a tree because it contains tremendous amount of electric energy.

S8.Ans. (d)
Sol. An optical illusion which occurs mainly in deserts about during hot summer is based on the principle of Total internal reflection. On a very hot day in desert, the air just in contact with sand is hotter than the air above it due to the high temperature of the sand. This causes the refractive index of the air in contact with the sand to be lower than that of the air above it.

S9.Ans. (d)
Sol. Magnification decreases with the increase in focal length of eyepiece.

S10.Ans. (a)
Sol. Clay particles are smaller than 0.002 mm in diameter, slit particles are from 0.002 to 0.05 mm in diameter and sand ranges from 0.05 to 2.0 mm. Particles larger than 0.2 mm are called gravel or stones.