General Science MCQs and Answers: General Science are very important for OPSC, OSSC, OSSSC & Other State Exams. Aspirants who are willing to apply for the various Government exams in 2022 must go through the topics of General Science for competitive exams, as General Science is a key part of the syllabus.
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Q1. Which of the following plants is referred to as a living fossil?
(a) Ephedra
(b) Cycas
(c) Ginkgo
(d) Adiantum
S1. Ans.(c)
Sol. Ginkgo biloba also known as the maidenhair tree is often referred to as a “living fossil,” because it is the only remaining representative of a perished botanical family (the Ginkgoaceae) and is considered to be the oldest living tree species.
Q2. Which one of the following disease is caused by Protozoa?
(a) Malaria
(b) Cholera
(c) Jaundice
(d) None of these
S2. Ans.(a)
Sol.Malaria is caused by Protozoa.
Malaria is caused by a protozoan parasite called Plasmodium.
Q3. Rickets is caused by deficiency of which vitamin?
(a) Vitamin C
(b) Vitamin B
(c) Vitamin A
(d) Vitamin K
S3.Ans(c)
Sol.Ricketsis caused by deficiency of vitamin A
Q4. Which among the following glands in the human body stores iodine?
(a) Parathyroid
(b) Thyroid
(c) Pituitary
(d) Adrenal
S4. Ans.(b)
Sol. Iodine is mostly concentrated in thyroid gland.
A healthy adult body contains 15-20 mg of iodine, 70-80% of which is stored in the thyroid gland.
Q5. Which one of the following is not the part of excretory system?
(a) Undigested food
(b) Urine
(c) Sweat
(d) Uric acid
S5. Ans.(a)
Sol.Undigested food is not the product of excretory system.
It is a part of process known as egestion that includes removal of undigested food matter.
Q6. Which among the following are not conjugated proteins ?
(a) Glycoproteins
(b) Scleroproteins
(c) Phosphoproteins
(d) Haemoglobins
S6. Ans.(b)
Sol. A conjugatedprotein is a protein that functions in interaction with other (non-polypeptide) chemical groups attached by covalent bonding or weak interactions.
Some examples of conjugated proteins are lipoproteins, glycoproteins, Nucleoproteins, phosphoproteins, hemoproteins (Hemoglobin and myoglobin are examples of ), metalloproteins, phytochromes, cytochromes, opsins, and chromoproteins.
Q7. Which one of the following glands produces the growth hormone?
(a) Adrenal
(b) Pancreas
(c) Pituitary
(d) Thyroid
S7. Ans.(c)
Sol. Growth hormone is produced by the pituitary gland. It has many functions including maintaining normal body structure and metabolism.
Q8. The branch of botany dealing with heredity and variation is known as
(a) Geobotany
(b) Sericulture
(c) Genetics
(d) Evolution
S8. Ans.(c)
Sol. The branch of biology that deals with the study of heredity and variation are known as Genetics.
Q9. Which birds migrate to warmer regions during the winter and return during summer?
(a) Snow geese
(b) Arctic terns
(c) Plarmigans
(d) Both (a) & (b)
S9. Ans.(d)
Sol. Snow geese and Arctic terns migrate to warmer regions during the winter and return during summer.
Thus, both (a) & (b) options are correct.
Q10. The smallest filtering unit of kidney is
(a) Ureter
(b) Urethra
(c) Urinary bladder
(d) Nephron
S10. Ans.(d)
Sol.The smallest filtering unit of kidney is Nephron.
The nephron is the minute or microscopic structural and functional unit of the kidney.
It is composed of a renal corpuscle and a renal tubule.
Q11. Foot and Mouth disease in animals, a current epidemic in some parts of the world, is caused by
(a) Bacterium
(b) Fungus
(c) Protozoan
(d) Virus
S11. Ans.(d)
Sol. Foot-and-mouth disease (FMD) is a highly contagious virus disease of animals.
It is one of the most serious livestock diseases.
It affects cloven-hoofed animals, including domestic and wild bovids.
Q12. Which one ofthese is male reproductive organ in plants?
(a) Pistil
(b) Stamen
(c) Ovule
(d) Ovary
S12. Ans.(b)
Sol. The stamen is the male reproductive organ found in plants.
It consists of a pollen sac (anther) and a long supporting filament.
Q13.Which one of the following chemicals had been in use till now for making artificial clouds?
(a) Potassium Nitrate
(b) Heavy Water
(c) Sulphur Iodide
(d) Silver Iodide
S13. Ans.(d)
Sol. Cloud seeding is the process of spreading either dry ice or more commonly silver Iodide into the upper part of clouds to try to stimulate the precipitation process and form rain.
Q14. What is the common characteristic of the elements of the same group in the periodic table?
(a) Electrons in outer most shell
(b) Total number of electrons
(c) Total number of protons
(d) Atomic weight
S14.Ans.(a)
Sol. The elements in each group have the same number of electrons in the outer orbital. Those outer electrons are also called valence electrons. They are the electrons involved in chemical bonds with other elements.
Q15. Convex mirror is generally used in _____.
(a) Solar cookers
(b) Opthalmoscope
(c) Reflector for head light
(d) Rear view mirror
S15. Ans.(d)
Sol. A convex mirror provides for a larger field of view than a plane mirror. They are used whenever a mirror with a large field of view is needed. For example, the passenger-side rear view mirror on a car is convex.
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