General-Studies Quiz For FCI Phase I 2022- 6th October

Q1. The inert gas abundantly found in atmosphere is:
(a) Xe
(b) Kr
(c) He
(d) Ar
(e) None of the above

Q2. Which organelle in the cell, other than nucleus contains DNA?
(a) Centriole
(b) Golgi apparatus
(c) Lysosome
(d) Mitrochondrion
(e) None of the above

Q3. Which gas is used in filling electric bulbs?
(a) Neon
(b) Argon
(c) Radon
(d) Krypton
(e) None of the above

Q4. When one gene controls two or more different characters simultaneously, the phenomenon is called
(a) Apomixis
(b) Pleiotropy
(c) Polyploidy
(d) Polyteny
(e) None of the above

Q5. Which of the following is used as a preservative to protect processed food?
(a) Sodium sulphate
(b) Saccharin
(c) BHT
(d) Sodium metabisulphite
(e) None of the above

Q6. Which of the following does not have any enzymes in its cells?
(a) Algae
(b) Virus
(c) Lichen
(d) Bacteria
(e) None of the above

Q7. Which of the following has the largest number of chromosomes?
(a) Human beings
(b) Pteridophytes
(c) Elephants
(d) Bryophytes
(e) None of the above

Q8. China wares are wrapped in straw of paper before packing. This is the application of concept of
(a) impulse
(b) momentum
(c) acceleration
(d) force
(e) None of the above

Q9. When a body is stationary, then
(a) there is no force acting on it
(b) the body is in vacuum
(c) the force acting on it is not in contact with it
(d) the net forces acting on it balances each other
(e) None of the above

Q10. If the angular velocity of the Earth decreases, then
(a) the value of acceleration due to gravity also decreases
(b) the value of acceleration due to gravity increases
(c) the value of acceleration due to gravity remains same
(d) None of the above
(e) None of the above

Solutions

S1.Ans. (d)
Sol. Argon (Ar) is abundantly found in atmosphere. It makes up 0.9 percent of the atmosphere.

S2.Ans. (d)
Sol. Mitochondria contain DNA other than nucleus. Mitochondria are thought to be the parasites in the eukaryotic cells that got inside the latter as a result of the endo-symbiotic event that took place earlier in the evolution. Centriole is a small set of microtubules, Golgi apparatus is a complex of vesicles and folded membranes within the cytoplasm of most eukaryotic cells, involved in secretion and intracellular transport.

S3.Ans. (b)
Sol. Electric bulbs are generally filled with argon gas because this gas is able to burn very intensely and produce bright light.

S4.Ans. (b)
Sol. When multiple traits are controlled by one particular gene, that gene is known as pleiotropic gene and its effect is known as pleiotropic effect. Polyteny is a special nuclear differentiation reported in larval and adult Diptera, Collembola, Protista and angiosperm ovular nuclei. Apomixis is an asexual reproduction in plants, in particular agamospermy. Polyploid cells and organisms are those that contain more than two paired (homologous) sets of chromosomes.

S5.Ans. (d)
Sol. Sodium metabisulphite (Na2S2O5) inhibits growth of bacteria and fungi including mold. It is an artificial food additive.

S6.Ans. (b)
Sol. Virus is not a cell; it remains just in the form of a genetic material or encapsulated on outside with a protein capsid. It generally injects its genetic material into the host cells wherein the viral proteins get synthesised.

S7.Ans. (b)
Sol. Ferns, a group under pteridophytes have large number of chromosomes e.g. Ophioglossum reticulatum has 2n=1260, highest known in all life forms.

S8.Ans. (a)
Sol. As a certain impulse applied for a short time will give a large force so the chinaware breaks into pieces. Therefore, chinaware is wrapped in straw of paper while packing so that the event of fall (impact) will take a longer time to reach the chinaware through straw of paper and hence the average force exerted on the chinaware is small and chances of its breaking reduce.

S9.Ans. (d)
Sol. For both stationary and moving objects with unchanging speed and direction, all the forces acting on the objects are in balance with each other, i.e. they all cancel each other.

S10.Ans. (a)
Sol. If the angular velocity is decreasing, then the angular acceleration points in the opposite direction of the angular velocity. Likewise, if the angular velocity is pointing downward and is increasing, then the angular acceleration also points downward. The faster the change in angular velocity, the greater the angular acceleration. If rate of rotation of earth decreases, then acceleration due to gravity will decrease at points on the surface of earth.