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
- Which vitamin deficiency causes scurvy?
(a) Vitamin A
(b) Vitamin B1
(c) Vitamin C
(d) Vitamin D
Ans: (c) Vitamin C - What is the deficiency disease associated with Vitamin D?
(a) Beriberi
(b) Rickets
(c) Pellagra
(d) Scurvy
Ans: (b) Rickets - Which vitamin is also known as thiamine?
(a) Vitamin B1
(b) Vitamin B2
(c) Vitamin B3
(d) Vitamin B6
Ans: (a) Vitamin B1 - What deficiency disease is caused by a lack of Vitamin B1?
(a) Pellagra
(b) Beriberi
(c) Scurvy
(d) Rickets
Ans: (b) Beriberi - Which gas is responsible for the greenhouse effect?
(a) Oxygen
(b) Carbon dioxide
(c) Nitrogen
(d) Hydrogen
Ans: (b) Carbon dioxide - What is the basic unit of life?
(a) Cell
(b) Atom
(c) Molecule
(d) Organ
Ans: (a) Cell - What is the SI unit of force?
(a) Joule
(b) Newton
(c) Watt
(d) Ohm
Ans: (b) Newton - Which organelle is responsible for protein synthesis in a cell?
(a) Nucleus
(b) Golgi apparatus
(c) Mitochondrion
(d) Ribosome
Ans: (d) Ribosome - What is the process by which cells divide to form new cells?
(a) Respiration
(b) Digestion
(c) Replication
(d) Mitosis
Ans: (d) Mitosis - Which molecule carries genetic information in a cell?
(a) DNA
(b) RNA
(c) Protein
(d) Lipid
Ans: (a) DNA - What is the smallest unit of an element that retains its chemical properties?
(a) Molecule
(b) Atom
(c) Compound
(d) Ion
Ans: (b) Atom - Which acid is found in citrus fruits?
(a) Sulfuric acid
(b) Nitric acid
(c) Citric acid
(d) Hydrochloric acid
Ans: (c) Citric acid - What is the pH value of a neutral substance?
(a) 7
(b) 1
(c) 14
(d) 0
Ans: (a) 7 - What is the speed of light in a vacuum?
(a) 300,000 km/s
(b) 150,000 km/s
(c) 3,000 km/s
(d) 30,000 km/s
Ans: (a) 300,000 km/s - What is the phenomenon where a wave bends as it passes from one medium to another?
(a) Diffraction
(b) Dispersion
(c) Reflection
(d) Refraction
Ans: (d) Refraction - What is the energy of motion called?
(a) Potential energy
(b) Kinetic energy
(c) Thermal energy
(d) Mechanical energy
Ans: (b) Kinetic energy - Which molecule carries amino acids to the ribosome during protein synthesis?
(a) DNA
(b) RNA
(c) tRNA
(d) rRNA
Ans: (c) tRNA - What is the process by which DNA is copied into mRNA?
(a) Translation
(b) Transcription
(c) Replication
(d) Mutation
Ans: (b) Transcription - Which enzyme is responsible for unwinding the DNA double helix during replication?
(a) DNA polymerase
(b) Helicase
(c) Ligase
(d) RNA polymerase
Ans: (b) Helicase - What is the central dogma of molecular biology?
(a) DNA → RNA → Protein
(b) RNA → DNA → Protein
(c) Protein → RNA → DNA
(d) DNA → Protein → RNA
Ans: (a) DNA → RNA → Protein - What is the primary pigment involved in photosynthesis?
(a) Chlorophyll
(b) Carotene
(c) Xanthophyll
(d) Anthocyanin
Ans: (a) Chlorophyll - What is the main component of natural gas?
(a) Methane
(b) Ethane
(c) Propane
(d) Butane
Ans: (a) Methane - What is the boiling point of water at sea level?
(a) 90°C
(b) 100°C
(c) 110°C
(d) 120°C
Ans: (b) 100°C - Which planet is known as the Red Planet?
(a) Venus
(b) Mars
(c) Jupiter
(d) Saturn
Ans: (b) Mars - What is the chemical formula for table salt?
(a) NaCl
(b) KCl
(c) NaBr
(d) KBr
Ans: (a) NaCl - What is the hardest natural substance on Earth?
(a) Gold
(b) Iron
(c) Diamond
(d) Platinum
Ans: (c) Diamond - What is the main function of red blood cells?
(a) Transport oxygen
(b) Fight infections
(c) Clot blood
(d) Produce hormones
Ans: (a) Transport oxygen - What is the chemical symbol for iron?
(a) Fe
(b) Ir
(c) In
(d) I
Ans: (a) Fe - What is the powerhouse of the cell?
(a) Nucleus
(b) Ribosome
(c) Mitochondrion
(d) Golgi apparatus
Ans: (c) Mitochondrion - What is the study of fungi called?
(a) Mycology
(b) Bacteriology
(c) Virology
(d) Phycology
Ans: (a) Mycology - What is the unit of electrical resistance?
(a) Volt
b) Ampere
(c) Ohm
(d) Watt
Ans: (c) Ohm
