science

What is the atomic number of carbon?

• 12

• 6

• 8

• 14

Which of the following is an example of a noble gas?

• Oxygen

• Nitrogen

• Helium

• Chlorine

What is the chemical symbol for gold?

• Au

• Ag

• Fe

• Pb

Which type of reaction involves the loss of electrons?

• Reduction

• Oxidation

• Neutralization

• Precipitation

What is the common name of NaCl?

• Baking soda

• Table salt

• Limestone

• Bleach

acid is found in lemon juice?

• Hydrochloric acid

• Acetic acid

• Citric acid

• Sulfuric acid

What is the main component of natural gas?

• Propane

• Methane

• Butane

• Ethane

Which element is a liquid at room temperature?

• Mercury

• Lead

• Silver

• Aluminium

What is the SI unit of pressure?

• Pascal

• Joule

• Newton

• Watt

What is the process by which plants make their food?

• Fermentation

• Photosynthesis

• Respiration

• Electrolysis