General Science MCQ Quiz 1

Concept Booster – General Science MCQ Quiz 1

This General Science MCQ Quiz concept booster covers important topics from Physics, Chemistry, and Biology that are frequently asked in SSC, RRB, and TNPSC exams. Understanding these general science concepts will help you answer general science MCQ questions accurately and improve your overall score. Use this section as a quick revision guide before attempting more general science quizzes for competitive exams.

Chemistry Concepts

• Most abundant gas in Earth’s atmosphere → Nitrogen (78%)
  Nitrogen is essential for plant growth and forms part of proteins and DNA.
• Chemical formula of water → H₂O
  Water consists of two hydrogen atoms and one oxygen atom.
• pH and basic reactions (Important concept)
  Acids have pH less than 7, bases have pH more than 7.
• Liquid metal at room temperature → Mercury
  Mercury is the only metal that remains liquid under normal conditions.

Biology Concepts

• Photosynthesis occurs in leaves
  Leaves contain chlorophyll which helps plants prepare food using sunlight.
• Plants absorb Carbon Dioxide (CO₂)
  CO₂ is used in photosynthesis to produce glucose and oxygen.
• Vitamin for blood clotting → Vitamin K
  It helps in wound healing and prevents excessive bleeding.
• Organ that purifies blood → Kidney
  Kidneys filter waste and maintain water balance.
• Human heart has 4 chambers
  Two atria and two ventricles ensure proper blood circulation.
• Cell structure → Nucleus contains genetic material (DNA)
  It controls cell activities and heredity.

Physics Concepts

• Unit of electric current → Ampere (A)
  It measures the flow of electric charge.
• SI unit of work → Joule (J)
  Work is done when force is applied over a distance.
• Force pulling objects → Gravity
  Earth’s gravitational force pulls objects towards its center.
• Sound travels fastest in solids
  Because particles are closely packed.
• Boiling point of water → 100°C (at sea level)
  Standard value used in many scientific calculations.

General Science & Space Concepts

• Red Planet → Mars
  Due to presence of iron oxide (rust).
• Largest planet → Jupiter
  It is a gas giant with a strong gravitational field.
• Main source of energy → Sun
  Almost all energy on Earth comes from the Sun.
• Instrument to measure pressure → Barometer
  Used to measure atmospheric pressure.
• Hardest natural substance → Diamond
  Known for its strong atomic structure.

Quick Q&A Revision

• Most abundant gas in atmosphere? → Nitrogen
• Chemical formula of water? → H₂O
• Photosynthesis occurs in which part? → Leaves
• Unit of electric current? → Ampere
• Red planet? → Mars
• Vitamin for blood clotting? → Vitamin K
• Hardest natural substance? → Diamond
• Sound travels fastest in? → Solids
• Organ that purifies blood? → Kidney
• Boiling point of water? → 100°C
• Liquid metal at room temperature? → Mercury
• Force pulling objects to Earth? → Gravity
• Gas absorbed by plants? → Carbon Dioxide (CO₂)
• Number of chambers in heart? → 4
• Largest planet? → Jupiter
• SI unit of work? → Joule
• Universal donor blood group? → O negative (O⁻)
• Main source of energy for Earth? → Sun
• Instrument measuring atmospheric pressure? → Barometer
• Genetic material found in? → Nucleus

Final Revision Tips

• Revise important general science concepts from Physics, Chemistry, and Biology regularly
• Focus on units, formulas, and definitions (Ampere, Joule, etc.)
• Practice general science MCQ questions daily for better speed and accuracy
• Pay attention to frequently asked topics like planets, human body, and basic chemistry
• Use this General Science MCQ Quiz for quick revision before exams
• Strengthen basics using NCERT textbooks and previous year questions