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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
When calcium chloride (CaCl₂) is present in water, it causes:
No hardness.
Temporary hardness.
Alkaline water.
Permanent hardness.
How would you distinguish between hard and soft water using soap?
Measure the boiling point.
Shake with soap solution; hard water will produce less lather and more scum.
Add universal indicator.
Check the pH of the water.
When lithium metal burns in oxygen, what is the primary product formed?
Lithium oxide (Li₂O).
Lithium peroxide (Li₂O₂).
Lithium hydroxide (LiOH).
Lithium superoxide (LiO₂).
A student observes that a piece of unknown metal floats on water and reacts vigorously with it, producing bubbles and a solution that turns red litmus blue. The metal is most likely a member of:
Transition metals.
Group 2.
Group 1.
Group 13.
Which element does not react with cold water to form the corresponding hydroxide?
Magnesium.
Potassium.
Sodium.
Calcium.
