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Which of the following is a property of a solid?

  • (A) Definite shape
  • (B) Takes the shape of its container
  • (C) No definite volume
  • (D) Can be compressed

Answer: Definite shape

Solids have a fixed shape and volume due to their particles being closely packed together.

What is the function of the small intestine in the digestive system?

  • (A) Absorption
  • (B) Digestion
  • (C) Filtration
  • (D) Secretion

Answer: Absorption

The small intestine is primarily responsible for the absorption of nutrients from digested food.

Which element has the chemical symbol Na?

  • (A) Nitrogen
  • (B) Sodium
  • (C) Nickel
  • (D) Neon

Answer: Sodium

Sodium, with the chemical symbol Na, is an alkali metal found in Group 1 of the periodic table.

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What is the unit of work in the SI system?

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

Answer: Joule

The SI unit of work is the Joule (J), which is the energy used when a force of one newton displaces an object by one meter.

Which gas is produced during the process of respiration?

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

Answer: Carbon dioxide

Carbon dioxide is produced as a byproduct of cellular respiration, where oxygen is used to break down glucose to release energy.

Which of the following is NOT a conductor of electricity?

  • (A) Copper
  • (B) Silver
  • (C) Rubber
  • (D) Gold

Answer: Rubber

Rubber is an insulator, meaning it does not conduct electricity, unlike copper, silver and gold, which are good conductors.

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Which of the following is an example of a chemical change?

  • (A) Boiling water
  • (B) Melting ice
  • (C) Burning wood
  • (D) Freezing water

Answer: Burning wood

Burning wood is a chemical change because it involves the combustion of wood, which produces new substances such as ash and gases.

Which part of the atom has a positive charge?

  • (A) Electron
  • (B) Proton
  • (C) Neutron
  • (D) Nucleus

Answer: Proton

Protons are positively charged subatomic particles located in the nucleus of an atom.

Which of the following is the unit of force in the SI system?

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

Answer: Newton

The SI unit of force is the Newton (N), named after Sir Isaac Newton. It measures the force required to accelerate a 1 kg mass by 1 m/s?.

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What is the main component of the Earths core?

  • (A) Oxygen
  • (B) Iron
  • (C) Nickel
  • (D) Sulfur

Answer: Iron

The Earths core is primarily composed of iron, with smaller amounts of nickel and other elements.

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