☰ Menu

Place for ads

MCQs -for Competitive Exams & Improve Knowledge

Looking for MCQs? You're in the right place! Whether you're preparing for competitive exams, school boards or just aiming to improve your knowledge, we offer MCQs for all levels and subjects.

All AbbreviationsArt and CultureAwardsBooks and AuthorsCapitalsClimate / EnvironmentComputer AwarenessConstitutionCurrenciesDanceDefence and WarsDiscoveriesEminent PersonalitiesFreedom MovementGeographyHeritageHistoryLanguagesNational SymbolsScienceSports and Championships

What is the process by which plants absorb water from the soil?

  • (A) Transpiration
  • (B) Evaporation
  • (C) Osmosis
  • (D) Diffusion

Answer: Osmosis

Osmosis is the process by which water moves from an area of lower concentration to an area of higher concentration through a semi-permeable membrane.

What is the chemical formula for glucose?

  • (A) C6H12O6
  • (B) C6H10O6
  • (C) C5H10O5
  • (D) C5H12O6

Answer: C6H12O6

Glucose has the chemical formula C6H12O6, which represents its carbon, hydrogen and oxygen atoms.

What is the basic unit of life?

  • (A) Atom
  • (B) Cell
  • (C) Organ
  • (D) Molecule

Answer: Cell

The cell is the basic structural and functional unit of all living organisms.

Place for ads

Which of the following is a conductor of electricity?

  • (A) Rubber
  • (B) Wood
  • (C) Copper
  • (D) Glass

Answer: Copper

Copper is an excellent conductor of electricity due to its free-moving electrons.

What is the main function of the human respiratory system?

  • (A) To break down food
  • (B) To circulate blood
  • (C) To supply oxygen to the body
  • (D) To digest nutrients

Answer: To supply oxygen to the body

The respiratory system brings oxygen into the body and removes carbon dioxide.

What is the chemical symbol for potassium?

  • (A) K
  • (B) P
  • (C) Pt
  • (D) Po

Answer: K

Potassiums chemical symbol is K, derived from its Latin name kalium.

Place for ads

Which planet is known as the Morning Star or Evening Star?

  • (A) Mars
  • (B) Venus
  • (C) Jupiter
  • (D) Saturn

Answer: Venus

Venus is often called the Morning Star or Evening Star due to its brightness and its position relative to Earth.

What is the freezing point of water at sea level?

  • (A) 0?C
  • (B) -10?C
  • (C) 10?C
  • (D) -5?C

Answer: 0?C

Water freezes at 0?C at standard atmospheric pressure (1 atm) at sea level.

Which of the following is a feature of an enzyme?

  • (A) It increases activation energy
  • (B) It is a catalyst
  • (C) It is consumed in the reaction
  • (D) It works at high temperatures

Answer: It is a catalyst

Enzymes are biological catalysts that speed up chemical reactions without being consumed or altered in the process.

Place for ads

What is the unit of frequency?

  • (A) Watt
  • (B) Ampere
  • (C) Hertz
  • (D) Volt

Answer: Hertz

The unit of frequency is the Hertz (Hz), which represents one cycle per second.

Previous3334353637Next

Place for ads

Subscribe to Our Newsletter