☰ 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 water moves from the roots to the leaves of a plant?

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

Answer: Transpiration

Transpiration is the process where water is absorbed by plant roots, transported through the plant and released as vapor through the leaves.

What is the function of chlorophyll in plants?

  • (A) Absorb sunlight
  • (B) Store water
  • (C) Produce oxygen
  • (D) Absorb carbon dioxide

Answer: Absorb sunlight

Chlorophyll is the green pigment in plants that absorbs sunlight, which is crucial for photosynthesis.

Which organ in the human body is responsible for producing insulin?

  • (A) Stomach
  • (B) Liver
  • (C) Pancreas
  • (D) Kidneys

Answer: Pancreas

The pancreas produces insulin, which helps regulate blood sugar levels.

Place for ads

What is the smallest unit of an element?

  • (A) Molecule
  • (B) Proton
  • (C) Atom
  • (D) Neutron

Answer: Atom

The atom is the smallest unit of an element, consisting of protons, neutrons and electrons.

Which of the following is NOT a part of the human digestive system?

  • (A) Stomach
  • (B) Heart
  • (C) Large intestine
  • (D) Esophagus

Answer: Heart

The heart is part of the circulatory system, not the digestive system, which includes the stomach, large intestine and esophagus.

Which gas is most abundant in natural gas?

  • (A) Methane
  • (B) Propane
  • (C) Butane
  • (D) Ethane

Answer: Methane

Methane is the main component of natural gas, accounting for about 70-90% of its content.

Place for ads

Which of the following elements is essential for photosynthesis?

  • (A) Calcium
  • (B) Iodine
  • (C) Iron
  • (D) Magnesium

Answer: Magnesium

Magnesium is the central atom in the chlorophyll molecule, which is essential for photosynthesis in plants.

What is the unit of electrical resistance?

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

Answer: Ohm

The unit of electrical resistance is the Ohm (?), which measures the opposition to the flow of electric current.

Which of the following elements is a halogen?

  • (A) Oxygen
  • (B) Fluorine
  • (C) Nitrogen
  • (D) Carbon

Answer: Fluorine

Fluorine is a halogen, a group of reactive elements in Group 17 of the periodic table.

Place for ads

What is the primary function of the kidneys in the human body?

  • (A) Produce hormones
  • (B) Detoxify blood
  • (C) Pump blood
  • (D) Absorb nutrients

Answer: Detoxify blood

The kidneys filter blood, remove waste and help regulate fluid balance, electrolytes and blood pressure.

Previous37383940Next

Place for ads

Subscribe to Our Newsletter