General-Studies Quiz For FCI Phase I 2022- 14th November

Q1. If an object moves with constant velocity then which one of the following statements is NOT correct?
(a) Its motion is along a straight line
(b) Its speed changes with time
(c) Its acceleration is zero
(d) its displacement increases linearly with time

Q2. Which one of the following has maximum inertia?
(a) An atom
(b) A molecule
(c) A one-rupee coin
(d) A cricket ball

Q3. Which one of the following liquids is very good conductor of heat?
(a) Mercury
(b) Water
(c) Ether
(d) Benzene

Q4. Which of the following is a correct statement about nitrogen fixation?
(a) Plants convert atmospheric nitrogen to ammonia.
(b) Ammonia is converted to N2, which is the form of nitrogen most easily absorbed by plants.
(c) Mutant strains of Rhizobium are able to secrete excess protein into the soil.
(d) The enzyme Nitrogenase reduces N2 to form ammonia.

Q5. Consider the following facts about plants.
1. Carbon dioxide and water vapour in plants are produced as wastes during respiration.
2. Oxygen is produced as a waste during photosynthesis.
3. The gaseous wastes of respiration and photosynthesis in plants are removed through the xylem vessels.
Choose the correct answer is:
(a) 1 and 2
(b) 2and 3
(c) 1 and 3
(d) 1, 2 and 3

Q6. Air is filled in vehicle tyres because
(a) it is non-conducting
(b) it is cheap
(c) it has low density
(d) it is highly compressible

Q7. During the change of state of matter the temperature of the substance
(a) increases
(b) decreases
(c) remains the same
(d) may increase or decrease

Q8. An egg when placed in ordinary water sinks but floats when placed in brine. This is because
(a) density of brine is less than that of ordinary water
(b) density of brine is equal to that of ordinary water
(c) density of brine is greater than that of ordinary water
(d) None of these

Q9. A man is sitting in a boat which is floating in pond. If the man drinks some water from the pond, the level of water in the pond will
(a) rise a little
(b) fall a little
(c) remain stationary
(d) None of these

Q10. A block of ice is floating in a beaker containing liquid of specific gravity greaterthan one.When ice melts completely what happens to the level of liquid in the beaker?
(a) It will remain the same as before
(b) It will go down
(c) It will rise up
(d) It may or may not change depending upon size of beaker

Solutions

S1.Ans. (a)
Sol. An object has constant velocity means that it is moving along a straight line, and as every second of time goes by, the object travels through the same number of meters.

S2.Ans. (d)
Sol. A cricket ball has maximum inertia.

S3.Ans. (a)
Sol. Mercury is very good conductor of heat as it is the only liquid metal. It is used in thermometer also.

S4.Ans. (d)
Sol. The enzyme nitrogenase reduces N2 to form ammonia. Mutant strains of Rhizobium are not able to secrete excess protein into the soil.

S5.Ans. (a)
Sol. Carbon dioxide and water vapour in plants are produced as wastes during respiration. Oxygen is produced as a waste during photosynthesis. All these gaseous wastes of photosynthesis and respiration are removed though stomata.

S6.Ans. (d)
Sol. Air is filled in vehicle tyres because it is highly compressible.

S7.Ans. (c)
Sol. Heat given/taken by the substance is equal to the latent heat of fusion or vaporization of the substance. That is why the temperature of the substance remains the same during the change of state.

S8.Ans. (c)
Sol. An egg when placed in ordinary water sinks to the bottom as the density of egg is higher than the density of ordinary water. Density is the mass of a material per unit volume, thus, adding salt to water (brine) increases the density of solution because salt increases the mass without changing the volume. That is why, an egg when placed in brine would float.

S9.Ans. (c)
Sol. The level of water in the pond remains unchanged.

S10.Ans. (c)
Sol. The specific gravity of liquid is greater than one and as the specific gravity of water is 1 hence the level of liquid in the beaker will rise up.