General Science forms an essential part of many competitive exams in India, including those conducted by the Odisha Sub-ordinate Staff Selection Commission (OSSSC) for various positions like Revenue Inspector (RI), Assistant Revenue Inspector (ARI), Amin, SFS, and ICDS Supervisor. To excel in these exams, candidates must have a strong grasp of fundamental scientific concepts. Here, we present the top 30 General Science multiple-choice questions (MCQs) to help candidates prepare effectively.
Top 30 General Science MCQS For OSSSC RI,ARI, Amin, SFS, ICDS Supervisor
- What is the main constituent of biogas?
(a) Carbon dioxide
(b) Methane
(c) Hydrogen
(d) Oxygen
Ans: (b) Methane - Which vitamin is essential for blood clotting?
(a) Vitamin A
(b) Vitamin B12
(c) Vitamin C
(d) Vitamin K
Ans: (d) Vitamin K - What is the process of converting solid directly into gas called?
(a) Condensation
(b) Evaporation
(c) Sublimation
(d) Deposition
Ans: (c) Sublimation - Which element is used as a moderator in nuclear reactors?
(a) Uranium
(b) Plutonium
(c) Graphite
(d) Thorium
Ans: (c) Graphite - What is the chemical formula of ammonium sulfate?
(a) (NH4)2SO4
(b) NH4SO4
(c) NH3SO4
(d) (NH3)2SO4
Ans: (a) (NH4)2SO4 - Which gas is produced when zinc reacts with hydrochloric acid?
(a) Oxygen
(b) Hydrogen
(c) Nitrogen
(d) Carbon dioxide
Ans: (b) Hydrogen - What is the SI unit of electric capacitance?
(a) Henry
(b) Farad
(c) Coulomb
(d) Ohm
Ans: (b) Farad - Which planet has the highest surface temperature in the solar system?
(a) Mars
(b) Venus
(c) Mercury
(d) Jupiter
Ans: (b) Venus - What is the primary component of natural gas?
(a) Ethane
(b) Propane
(c) Methane
(d) Butane
Ans: (c) Methane - What is the main function of ribosomes in a cell?
(a) Photosynthesis
(b) Protein synthesis
(c) Energy production
(d) Cell division
Ans: (b) Protein synthesis - Which disease is caused by the deficiency of vitamin C?
(a) Rickets
(b) Scurvy
(c) Beriberi
(d) Pellagra
Ans: (b) Scurvy - What is the hardest natural substance on Earth?
(a) Quartz
(b) Diamond
(c) Corundum
(d) Topaz
Ans: (b) Diamond - What is the term for animals that can live both on land and in water?
(a) Reptiles
(b) Amphibians
(c) Mammals
(d) Fishes
Ans: (b) Amphibians - Which process is responsible for the rusting of iron?
(a) Combustion
(b) Oxidation
(c) Reduction
(d) Hydrolysis
Ans: (b) Oxidation - What is the most abundant gas in the Earth’s atmosphere?
(a) Oxygen
(b) Carbon dioxide
(c) Nitrogen
(d) Argon
Ans: (c) Nitrogen - Which organ in the human body is primarily responsible for detoxifying chemicals and metabolizing drugs?
(a) Kidney
(b) Liver
(c) Pancreas
(d) Stomach
Ans: (b) Liver - Which type of electromagnetic radiation has the shortest wavelength?
(a) Radio waves
(b) Microwaves
(c) X-rays
(d) Gamma rays
Ans: (d) Gamma rays - What is the basic unit of heredity?
(a) Chromosome
(b) Gene
(c) DNA
(d) RNA
Ans: (b) Gene - Which element is most commonly used in the production of solar cells?
(a) Silver
(b) Copper
(c) Silicon
(d) Gold
Ans: (c) Silicon - What is the term for the study of fungi?
(a) Mycology
(b) Bacteriology
(c) Virology
(d) Botany
Ans: (a) Mycology - Which planet is known as the “Red Planet”?
(a) Mercury
(b) Mars
(c) Jupiter
(d) Saturn
Ans: (b) Mars - What is the chemical name for table salt?
(a) Sodium chloride
(b) Sodium carbonate
(c) Potassium chloride
(d) Magnesium sulfate
Ans: (a) Sodium chloride - Which organelle is known as the powerhouse of the cell?
(a) Nucleus
(b) Ribosome
(c) Mitochondrion
(d) Lysosome
Ans: (c) Mitochondrion - What is the process of cell division in prokaryotes called?
(a) Mitosis
(b) Meiosis
(c) Binary fission
(d) Budding
Ans: (c) Binary fission - Which element has the highest atomic number?
(a) Uranium
(b) Plutonium
(c) Francium
(d) Oganesson
Ans: (d) Oganesson - What is the most common type of star in the Milky Way galaxy?
(a) Red dwarf
(b) White dwarf
(c) Neutron star
(d) Supernova
Ans: (a) Red dwarf - Which hormone regulates the sleep-wake cycle in humans?
(a) Insulin
(b) Melatonin
(c) Adrenaline
(d) Thyroxine
Ans: (b) Melatonin - What is the main function of the large intestine in the human body?
(a) Digestion of proteins
(b) Absorption of nutrients
(c) Absorption of water
(d) Production of bile
Ans: (c) Absorption of water - Which type of chemical bond involves the sharing of electron pairs between atoms?
(a) Ionic bond
(b) Covalent bond
(c) Hydrogen bond
(d) Metallic bond
Ans: (b) Covalent bond - What is the most abundant element in the universe?
(a) Helium
(b) Oxygen
(c) Carbon
(d) Hydrogen
Ans: (d) Hydrogen
