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CHEMISTRY IN SOCIETY: Fertilizers
ENVIRONMENTAL EDUCATION: Chemistry In Society - Extraction Of Metals
MATTER - PROPERTIES AND TRANSFORMATION: Chemistry Of Elements - Alkali metals and alkaline earth metals
MATTER - PROPERTIES AND TRANSFORMATION: Chemistry Of Elements - Identification Of Ions
MATTER - PROPERTIES AND TRANSFORMATION: Chemistry Of Elements - Salts
MATTER - PROPERTIES AND TRANSFORMATION: Chemistry Of Elements - Transition metals
MATTER - PROPERTIES AND TRANSFORMATION: Principles Of Chemistry - Formulae, Moles And Equations
MATTER: PROPERTIES AND TRANSFORMATION: Rates Of Reaction
MATTER: PROPERTIES AND TRANSFORMATION: Reversible Reactions
PRINCIPLES OF CHEMISTRY: Electrochemistry
PRINCIPLES OF CHEMISTRY: Gaseous State

5/76 MCQs for:

MATTER - PROPERTIES AND TRANSFORMATION: Chemistry Of Elements - Alkali metals and alkaline earth metals

To remove temporary hardness by precipitation, a controlled amount of which substance can be added (Clark's method)?

Calcium chloride.

Calcium hydroxide (slaked lime).

Sulphuric acid.

Sodium chloride.

Give the formula of an oxide that reacts with both acid and base.

NO₂.

SO₃.

Na₂O.

Al₂O₃.

Alkaline solutions turn:

Litmus paper blue.

Red litmus paper blue.

No effect on litmus paper.

Blue litmus paper red.

What happens when dilute hydrochloric acid is added to magnesium metal?

Oxygen gas is produced slowly.

Hydrogen gas is produced rapidly.

Magnesium oxide is formed.

No reaction occurs.

A pair of strong alkali is:

LiOH and Sr(OH)₂.

NaOH and KOH.

NaOH and Ca(OH)₂.

Ca(OH)₂ and Mg(OH)₂.