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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

5/75 MCQs for:

MATTER - PROPERTIES AND TRANSFORMATION: Chemistry Of Elements - Identification Of Ions

A solution produces a dirty green precipitate with sodium hydroxide solution, which turns reddish-brown upon exposure to air. Which ion is indicated?

Ammonium (NH₄⁺).

Copper(II) (Cu²⁺).

Iron(II) (Fe²⁺).

Iron(III) (Fe³⁺).

Which anion gives a gas that turns limewater milky when dilute hydrochloric acid is added?

Sulfate (SO₄²⁻).

Carbonate (CO₃²⁻).

Nitrate (NO₃⁻).

Chloride (Cl⁻).

What is the colour of the precipitate formed when sodium hydroxide solution is added dropwise to an aqueous solution containing Fe²⁺ ions?

Reddish-brown.

Blue.

White.

Dirty green.

Which anion, when treated with silver nitrate solution acidified with nitric acid, gives a yellow precipitate that is insoluble in concentrated ammonia?

Iodide (I⁻).

Bromide (Br⁻).

Sulfate (SO₄²⁻).

Chloride (Cl⁻).

Which anion, when tested with silver nitrate solution acidified with nitric acid, gives a cream precipitate that is soluble in concentrated ammonia but insoluble in dilute ammonia?

Sulfate (SO₄⁻).

Chloride (Cl⁻).

Bromide (Br⁻).

Iodide (I⁻).