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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: Chemistry of Elements - Nitrogen
MATTER - PROPERTIES AND TRANSFORMATION: Chemistry of Elements - Sulphur
MATTER - PROPERTIES AND TRANSFORMATION: Organic Chemistry - Hydrocarbons
MATTER - PROPERTIES AND TRANSFORMATION: Principles Of Chemistry - Formulae, Moles And Equations
MATTER - PROPERTIES AND TRANSFORMATION: Principles Of Chemistry - Gaseous State
MATTER: PROPERTIES AND TRANSFORMATION: Principles Of Chemistry - Solutions and acid-base titration
PRINCIPLES OF CHEMISTRY: Electrochemistry
5/50 MCQs for:
MATTER - PROPERTIES AND TRANSFORMATION: Chemistry of Elements - Nitrogen
The conversion of nitrates back into atmospheric nitrogen (N₂) is called:
Denitrification.
Nitrification.
Ammonification.
Nitrogen fixation.
Ammonia is commonly prepared in the laboratory by heating an ammonium salt with a:
Dilute acid.
Weak acid.
Neutral salt.
Strong alkali.
What type of reaction occurs when dilute nitric acid reacts with zinc?
Neutralization.
Precipitation.
Displacement.
Redox (oxidation-reduction).
What role do nitrifying bacteria play in the nitrogen cycle?
Convert ammonia to nitrites and then to nitrates.
Convert atmospheric nitrogen to ammonia.
Convert nitrates to atmospheric nitrogen.
Convert nitrates to ammonia.
When ammonia gas is passed over heated copper(II) oxide, what is observed?
A blue solution is formed.
A popping sound is heard.
The black solid turns white.
The black solid turns red-brown.
