HARD
Stage 1 & 2
IMPORTANT
Earn 100

Oxides of potassium are reduced by

50% studentsanswered this correctly
Important Questions on Metals and Non-Metals
MEDIUM
Stage 1 & 2
IMPORTANT
Cinnabar is an ore of

MEDIUM
Stage 1 & 2
IMPORTANT
Rusting can be prevented by

MEDIUM
Stage 1 & 2
IMPORTANT
Which among the following is a noble metal ?

MEDIUM
Stage 1 & 2
IMPORTANT
Match the column I and column II
Column I | Column II |
A. Calcination | 1. Froth floatation |
B. Roasting | 2. Smelting |
C. Reduction with carbon | 3. Absence of air |
D. Sulphide ores | 4. Presence of air |

MEDIUM
Stage 1 & 2
IMPORTANT
Which of the following is the correct reactivity series ?

EASY
Stage 1 & 2
IMPORTANT
Non-metal that exist in liquid state is

MEDIUM
Stage 1 & 2
IMPORTANT
Oxides of non metals turn

MEDIUM
Stage 1 & 2
IMPORTANT
Metals are malleable and ductile because
