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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
The reaction of potassium with oxygen primarily forms:
Potassium hydroxide (KOH).
Potassium oxide (K₂O).
Potassium peroxide (K₂O₂).
Potassium superoxide (KO₂).
Which of the following statements about Group 1 elements is generally false?
They are good reducing agents.
They have low melting points.
They are soft metals.
They form coloured ions in solution.
When calcium chloride (CaCl₂) is present in water, it causes:
Permanent hardness.
Alkaline water.
Temporary hardness.
No hardness.
What happens when dilute hydrochloric acid is added to magnesium metal?
Magnesium oxide is formed.
Hydrogen gas is produced rapidly.
No reaction occurs.
Oxygen gas is produced slowly.
Which of the following is true about the densities of Group 1 metals?
Lithium is denser than water, but sodium and potassium are less dense.
They are all less dense than water.
Lithium, sodium, and potassium are all less dense than water.
They are all denser than water.
