Metals and Non-Metals revision quiz

What is the smallest unit of an element?

• Electron

• Neutron

• Atom

• Proton

The chemical symbol for 'Tin'.

• T

• Pb

• Tn

• Sn

Assertion (A): Copper is used for making electric wires.

Reason (R): Copper is malleable.

• Both (A) and (R) are true and (R) is the correct explanation of (A)

• Both (A) and (R) are true but (R) is not the correct explanation of (A)

• (A) is true but (R) is false

• (A) is false but (R) is true

• Both (A) and (R) are false

When a copper statue is exposed to moist air for a long time, it acquires a dull green coating. The green material is a mixture of__________ and __________.

• Copper Hydroxide and Calcium Carbonate

• Copper Hydroxide and Copper Sulphate.

• Copper Hydroxide and Copper Carbonate

• Copper hydroxide and Carbon Dioxide

Non-Metal + Oxygen -----> Non-Metallic oxide.

Sulphur + Oxygen ------> _______________

• Sulphur Oxide

• Sulphur Dioxide

• None of these

Define 'AMPHOTERIC OXIDES'.

• Metal Oxides which does not react with Acids or bases

• Oxides which react with both acids and bases

• Metal oxides Which react with both acids and bases

• Oxides which does not react with acids

• Oxides which are amphoteric

Magnesium + Steam ------>________+________.

• Magnesium Dioxide+Hydrogen Gas

• Magnesium Oxide+Hydrogen Gas

• Magnesium Hydroxide+

  Hydrogen Gas

• Magnesium Sulphate + Hydrogen Gas

Assertion(A): Potassium and Sodium are stored in Kerosine oil.

Reason(R): They react vigorously in both air and water.

• Both (A) and (R) are true and (R) is the correct explanation of (A).

• Both (A) and (R) are true but (R) is not the correct explanation of (A).

• (A) is true but (R) is false.

• (A) is false but (R) is true.

!! YOU CAN CHOOSE MULTIPLE CORRECT ANSWERS......!!

Reacts with cold water...

• Sodium

• Iron

• Calcium

• Potassium

Identification test for Hydrogen gas.

• Pop Sound

• Pale Blue Flame

• Both of these

• None of these