General-Studies Quiz For FCI Phase I 2022- 20th October

Q1. Consider the following respiratory pigments:
(1) Haemoglobin
(2) Haemocyanin
(3) Haemoerythrin
(4) Haemocynoglobin
Iron is contained in:
(a) 1, 2, 3 and 4
(b) 1 and 3
(c) 1 and 2
(d) 1, 2 and 4
(e) None of the above

Q2. 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

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 carbon compounds will not give a sooty flame?
(a) Benzene
(b) Hexane
(c) Naphthalene
(d) Anthracene
(e) None of the above

Q9. Ammonia (NH3) obtained from different sources always has same proportion of Nitrogen and Hydrogen. It proves the validity of law of:
(a) Reciprocal proportion
(b) Constant proportion
(c) Multiple proportions
(d) None of the above
(e) None of the above

Q10. A mixture of sulphur and carbon disulphide is:
(a) heterogeneous and shows Tyndall effect
(b) homogeneous and shows Tyndall effect
(c) heterogeneous and does not show Tyndall effect
(d) homogeneous and does not show Tyndall effect
(e) None of the above

Solutions

S1.Ans. (b)
Sol. Haemocyanin contains copper. Haemoglobin and Haemoerythrin contains Iron.

S2.Ans. (c)
Sol. Single drop of blood contains millions of RBCS.

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. (b)
Sol. Hexane do not give sooty flame as it is alkane and saturated compound where as Benzene, Naphthalene and Anthracene are aromatic and unsaturated so they give sooty flame.

S9.Ans. (b)
Sol. Ammonia (NH3) obtained from different sources always has same proportion of Nitrogen and Hydrogen and it proves the validity of law of constant proportion.

S10.Ans. (d)
Sol. Sulphur dissolves in carbon disulphide to form a solution which is homogeneous in nature. It does not show any Tyndall effect.