General-Studies Quiz For FCI Phase I 2022- 15th December

Q1. A drop of blood contains.
(a) about 10,000 cells
(b) about 100,000 cells
(c) several million cells
(d) less than 25,000 cells
(e) None of the above

Q2. Which one of the following waves is used for detecting forgery in currency notes?
(a) Ultraviolet waves
(b) Infrared waves
(c) Radio waves
(d) Microwaves
(e) None of the above

Q3. Human blood contains what percentage of plasma?
(a) 35%
(b) 40%
(c) 50%
(d) 55%
(e) None of the above

Q4. Biologically, marriage should be avoided in between
(a) Rh+ male and Rh+ female
(b) Rh– female and Rh– male
(c) Rh+ female and Rh– male
(d) Rh+ male and Rh– female
(e) None of the above

Q5. A disorder which is linked to the Y chromosome in humans (holandric) will
(a) only be expressed in males whose mothers were a carrier of the gene
(b) never be passed from father to child
(c) show a pattern of skipping generations in a family
(d) be passed only from father to son
(e) None of the above

Q6. Which one of the following elements cannot be detected by “Lassaigne’s test”?
(a) I
(b) CI
(c) S
(d) F
(e) None of the above

Q7. Molecules of which of the following has cage like structure?
1. Diamond
2. Graphite
3. Fullerenes
Select the correct answer using the code given below:
(a) 1, 2 and 3
(b) 2 and 3 only
(c) 2 only
(d) 3 only
(e) None of the above

Q8. Which one of the following statements is not correct?
(a) Human eye is a refracting system containing a diverging lens.
(b) The retina of the human eye contains millions of light sensitive cells, called rods and cones, which convert the light into electrical messages.
(c) Every image that isfocused on the retina is upside down.
(d) We need both eyes to judge the relative positions of objects accurately.
(e) None of the above

Q9. Which one of the following statements is not correct?
(a) Ultrasonic waves cannot get reflected, refracted or absorbed.
(b) Ultrasonic waves are used to detect the presence of defects like cracks in the internal structure of common structure materials.
(c) Ultrasonic waves can be used for making holes in very hard materials like diamond.
(d) Ultrasonic waves cannot travel through vacuum.
(e) None of the above

Q10. In binary code, the number 7 is written as
(a) 110
(b) 111
(c) 101
(d) 100
(e) None of the above

Solutions

S1.Ans. (c)
Sol. Single drop of blood contains millions of RBCS.

S2.Ans. (a)
Sol. Ultraviolet waves are used for detecting fake and forged currency. The paper currency has a strip that is embedded in the note. This strip cannot be forged like that in the original currency. So, to check for detecting forgery in currency notes, Ultraviolet waves are used.

S3.Ans. (d)
Sol. Human blood contains 55% plasma and 45% blood cells.

S4.Ans. (d)
Sol. Rh factor is a protein found in blood. A person having Rh factor in blood is called Rh positive whereas that who does not carry this protein in the blood is called Rh negative. Marriage should be avoided in between Rh negative female & Rh positive male. This can be fatal for the mother as well as the baby of such parents.

S5.Ans. (d)
Sol. Human beings show two types of sex determining chromosomes–xx in females and xy–in males. In human beings, males are hemizygous; meaning any character present in either of the sex chromosomes will be reflected in the male individual. A boy inherits the y chromosomes from the father, which is why a disorder linked to the y chromosome will have to be transmitted from the father to the son.

S6.Ans. (d)
Sol. Fluorine does not give Lassaigne’s test because it does not form Precipitate like other halogens (chlorine,Bromine,Iodine).

S7.Ans. (d)
Sol. Fullerene C60 is a polyhedral CARBON structure composed of around 60-80 carbon atoms in pentagon and hexagon configuration. They are named after Buckminster Fuller because of structural resemblance to geodesic domes. Fullerenes can be made in high temperature such as arc discharge in an inert atmosphere.

S8.Ans. (a)
Sol. Human eye is a refracting system containing a diverging lens.

S9.Ans. (d)
Sol. Ultrasonic waves cannot get reflected, refracted or absorbed, Ultrasonic waves are used to detect the presence of defects like cracks, porosity, etc. in the internal structure of common structure materials, Ultrasonic waves can be used for making holes in very hard materials like diamond.

S10.Ans. (b)
Sol. Binary 111= (1× 22) + (1 × 21) + (1 × 20) = 4 + 2 + 1 = 7