General-Studies Quiz For FCI Phase I 2022- 2nd December

Q1. Raw mangoes shrivel when pickled in brine. The phenomenon is associated with
(a) osmosis
(b) reverse osmosis
(c) increase of surface tension of fluid
(d) decrease of surface tension of fluid

Q2. Half portion of a rectangular piece of ice is wrapped with a white piece of cloth while the other half with a black one. In this context, which one among the following statements is correct?
(a) Ice melts more easily under black wrap
(b) Ice melts more easily under white wrap
(c) No ice melts at all under the black wrap
(d) No ice melts at all under the white wrap

Q3. Before X-ray examination (coloured X-ray) of the stomach, patients are given suitable salt of barium because
(a) barium salts are white in colour and this helps stomach to appear clearly
(b) barium is a good absorber of X-rays and helps stomach to appear clearly
(c) barium salts are easily available
(d) barium allows X-rays to pass through the stomach

Q4. The best colours for a sun umbrella will be
(a) black on top and red on inside
(b) black on top and white on inside
(c) red on top and black on inside
(d) white on top and black on inside

Q5. When ice melts, its
(a) volume decreases
(b) volume increases
(c) volume and mass both decrease
(d) volume decreases while mass increases

Q6. Mr X was advised by an architect to make outer walls of his house with hollow bricks. The correct reason is that such walls
(a) make the building stronger
(b) help keeping inside cooler in summer and warmer in winter
(c) prevent seepage of moisture from outside
(d) protect the building from lightning

Q7. If a ship moves from freshwater into seawater, it will
(a) sink completely
(b) sink a little bit
(c) rise a little higher
(d) remain unaffected

Q8. The cat can survive fall from a height much more than human or any other animal. It is because the cat
(a) can immediately adjust itself to land on all four paws and bend the legs to absorb the impact of falling
(b) has elastic bones
(c) has thick and elastic skin
(d) also gets injury equally with other animals, but has tremendous endurance, resistance and speedy recovery

Q9. When deep sea fishes are brought to the surface of the sea, their bodies burst. This is because the blood in their bodies flows at very
(a) high speed
(b) high pressure
(c) low speed
(d) low pressure

Q10. By what mechanism does scent spread all over the room if the lid is opened?
(a) Pressure in the bottle
(b) Compression from the bottle
(c) Diffusion
(d) Osmosis

Solutions

S1.Ans. (a)
Sol. Raw mangoes shrivel when pickled in brine due to osmosis i.e. flow of water from higher concentration to lower concentration through a semi-permeable membrane.

S2.Ans. (a)
Sol. Ice under black wrap will melt easily because dark colour (black) absorbs the most of light energy falling on it.

S3.Ans. (b)
Sol. Barium is a good absorber of X-rays and helps stomach to appear clearly.

S4.Ans. (d)
Sol. As white colour reflects all the components of white light and black colour absorbs all the components of white light. So, the best colours for a sun umbrella, white on top and black on inside.

S5.Ans. (a)
Sol. When ice melts its density increases i.e. its volume decreases. Mass is a invariant quantity.

S6.Ans. (b)
Sol. The hollow bricks provide thermal insulations; the air in hollow bricks, does not allow outside heat or cold in the house to go out or come in the house. So, it keeps house cool in summer and warm in winter.

S7.Ans. (c)
Sol. When a body is immersed in a fluid, the fluid exerts an upward force on it, called buoyant force. and buoyant force ∝ density of fluid. As the density of sea water is higher than that of the fresh water. So extra buoyant force and ship will rise a little higher.

S8.Ans. (a)
Sol. As the cat falls from a height, it bends the legs to absorb the impact of falling and immediately adjust itself.

S9.Ans. (a)
Sol. When deep sea fishes are brought to the surface of the sea, their bodies burst, this is because the blood in their bodies flows at very high speed.

S10.Ans. (c)
Sol. Diffusion refers to the process by which molecules intermingle as a result of their kinetic energy of random motion.