Revise smart, understand Better

0.000 s

Revise smart, understand Better

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

5/75 MCQs for:

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

When sodium hydroxide solution is added drop wise to a test solution, and then in excess, a dirty green gelatinous precipitate which is insoluble in excess sodium hydroxide indicates the presence of?

Fe²⁺.

Fe³⁺.

Cu²⁺.

Zn²⁺.

The flame coulour of Ba²⁺ is?

Brick-red.

Apple-green.

Bluish-green.

Golden yellow.

How do you test for nitrate ions (NO₃⁻) using the brown ring test?

Add dilute acid, then warm and test the gas.

Add barium nitrate solution and observe.

Add aqueous ammonia and observe.

Add concentrated sulfuric acid and freshly prepared iron(II) sulfate solution, then carefully layer the acid at the bottom.

A flame test produces a brick-red colour. Which cation is responsible for this observation?

Barium (Ba²⁺).

Copper(II) (Cu²⁺).

Lithium (Li⁺).

Calcium (Ca²⁺).

The flame coulour of Cu²⁺ is ?

Lilac.

Golden yellow.

Carmine or deep red.

Bluish-green.