☰ 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 unit of energy in the International System of Units (SI)?

  • (A) Joule
  • (B) Watt
  • (C) Ampere
  • (D) Newton

Answer: Joule

The SI unit of energy is the Joule (J), which measures the amount of energy transferred when an object is moved by a force.

Which gas is most commonly used in the process of photosynthesis?

  • (A) Oxygen
  • (B) Nitrogen
  • (C) Carbon dioxide
  • (D) Hydrogen

Answer: Carbon dioxide

Carbon dioxide is absorbed by plants during photosynthesis to produce glucose and oxygen.

Which of the following is not a part of the cell theory?

  • (A) All cells have a nucleus
  • (B) All living organisms are made of cells
  • (C) Cells are the basic unit of life
  • (D) All cells come from pre-existing cells

Answer: All cells have a nucleus

Not all cells have a nucleus. Prokaryotic cells, like bacteria, lack a nucleus.

Place for ads

What is the study of heredity called?

  • (A) Genetics
  • (B) Evolution
  • (C) Physiology
  • (D) Cytology

Answer: Genetics

Genetics is the branch of biology that deals with the study of heredity and variation in organisms.

Which of the following is the main component of the Earths atmosphere?

  • (A) Nitrogen
  • (B) Oxygen
  • (C) Carbon dioxide
  • (D) Hydrogen

Answer: Nitrogen

Nitrogen makes up about 78% of Earths atmosphere, while oxygen makes up around 21%.

Which part of the cell is responsible for producing energy?

  • (A) Mitochondria
  • (B) Nucleus
  • (C) Endoplasmic reticulum
  • (D) Ribosome

Answer: Mitochondria

Mitochondria are known as the powerhouses of the cell because they generate ATP, the cells main energy source.

Place for ads

What is the unit of measurement for force in the metric system?

  • (A) Watt
  • (B) Joule
  • (C) Newton
  • (D) Ampere

Answer: Newton

The unit of force in the metric system is the Newton (N), used to measure how much force is applied to an object.

What is the pH of a solution that is strongly acidic?

  • (A) 7
  • (B) 3
  • (C) 0
  • (D) 14

Answer: 0

A solution with a pH near 0 is strongly acidic, indicating a high concentration of hydrogen ions.

What is the chemical symbol for silver?

  • (A) Ag
  • (B) Au
  • (C) Pb
  • (D) Fe

Answer: Ag

Silver is represented by the symbol Ag, derived from the Latin word argentum.

Place for ads

Which of the following is a fossil fuel?

  • (A) Solar energy
  • (B) Natural gas
  • (C) Wind energy
  • (D) Geothermal energy

Answer: Natural gas

Natural gas is a fossil fuel, formed from the remains of ancient plants and animals and is used for energy production.

Previous678910Next

Place for ads

Subscribe to Our Newsletter