Chemical Properties of Metals & Non - metals

Potassium + Oxygen gives

• 2K₂O

• 2CaO

• 2mgO

• 2N₂O

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

MgO +H₂O =

• MgOH

• Mg₂O

• Mg(OH)₂

• Mg(O)₂

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which one of the following gas burns with the "pop" sound?

• Oxygen

• Hydrogen

• Chlorine

• Hydrogen Sulphide

Which one of the following metal reacts vigorously with oxygen and water?

• Sodium

• Potassium

• Calcium

• Magnesium

When MgO is dissolved in water, Mg(OH)2 is obtained. The solution thus obtained is _______________ in nature.

• Amphoteric

• Alkaline

• Neutral

• Acidic

Identify the non-metal which exists in a liquid state in room temperature 25∘C.

• Aluminium

• Mercury

• Iodine

• Bromine

What is the chemical formula of copper sulphate?

• CuSO₄

• CuCO₃

• CuCI₂

• CuO

When magnesium reacts with water and oxygen, what can we observe?

• Coated with black layer

• Does not burn

• Burns with a yellow flame

• Burns with a brilliant white flame.

Tags

NGSS.MS-PS1-2

Which of the following pairs of compounds undergo displacement reaction when they react with each other?

• Cu and AgNO3 solution

• Ag and FeSO4 solution

• Cu and NaCl solution

• Mg and NaCl solution

When zinc reacts with dilute sulphuric acid, a salt is formed with the release of a gas. The gas produced during this puts off a burning candle with a pop sound. The gas evolved during this reaction is:

• sulphur dioxide

• oxygen

• hydrogen

• hydrogen sulphide

Tags

NGSS.MS-PS1-2