General-Studies Quiz For FCI Phase I 2022- 9th December

Q1. Average life span of human R.B.C is
(a) 100 days
(b) 90 days
(c) 120 days
(d) None of these
(e) None of the above

Q2. 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

Q3. When light passes from one medium to another medium, which one of the following does not change?
(a) Intensity
(b) Velocity
(c) Wavelength
(d) Frequency
(e) None of the above

Q4. Night vision cameras do not use
(a) amplified light
(b) infrared sensors
(c) heat radiation from objects
(d) X-ray radiation from objects
(e) None of the above

Q5. The spread in colours in a rainbow on sky is primarily due to
(a) dispersion of sunlight
(b) reflection of sunlight
(c) refraction of sunlight
(d) total internal reflection of sunlight
(e) None of the above

Q6. The audible frequency range of a human ear is
(a) 20 Hz to 200 Hz
(b) 2 Hz to 20 Hz
(c) 200 Hz to 2000 Hz
(d) 20 Hz to 20000 Hz
(e) None of the above

Q7. Microwave oven consumes less power due to
(a) small frequency of radiation
(b) short wavelength of radiation
(c) large frequency as well as wavelength of radiation
(d) small frequency as well as wavelength of radiation
(e) None of the above

Q8. Bats can ascertain distance, directions, nature and size of the obstacles at night. This is possible by reflection of the emitted
(a) ultrasonic waves from the bat
(b) ultrasonic waves from the distant objects
(c) supersonic waves from the bat
(d) supersonic waves from the distant objects
(e) None of the above

Q9. The replication of DNA is a pre-requisite for a eukaryotic cell to undergo division. During the cell cycle, the DNA replicates in
(a) S-phase
(b) G1-phase
(c) G2-phase
(d) M-phase
(e) None of the above

Q10. The flavour of apple is mainly due to which one of the following?
(a) Formalin
(b) Benzene
(c) Ethanol
(d) Benzaldehyde
(e) None of the above

Solutions

S1.Ans. (c)
Sol. The average life span of human RBC is 120 days. It’s life span is much more than WBC and Platelets.

S2.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.

S3.Ans. (d)
Sol. When light passes from one medium to another medium frequency does not change.

S4.Ans. (d)
Sol. Night vision cameras have three important features namely amplified light, infrared sensors as well as heat radiation from objects. While, x-rays radiations from objects are not used by these cameras.

S5.Ans. (a)
Sol. Rainbow (a band of seven colours – VIBGYOR) is a natural spectrum. It is caused by dispersion (i.e. splitting of white light into seven constituent colours VIBGYOR) of sunlight by tiny droplets of water present in the atmosphere.

S6.Ans. (d)
Sol. The audible frequency range of a human ear is 20 Hz to 20000Hz.

S7.Ans. (b)
Sol. Microwave oven consumes less power due to short wavelength of radiation.

S8.Ans. (a)
Sol. Bat emitted ultrasonic sounds specifically to produce echoes. By comparing the outgoing pulse with the returining echoes the brain and auditory nervous system can produce detail image of surrounding.

S9.Ans. (a)
Sol. The replication of DNA is a pre-requisite for a eukaryotic cell to undergo division. During the cell cycle, the DNA replicates in S phase (synthesis phase).

S10.Ans. (c)
Sol. The flavour of apples is mainly due to the ethanol (C2H5OH).