HARD
Stage 1 & 2
IMPORTANT
Earn 100

Oxides of potassium are reduced by

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Important Questions on Metals and Non-Metals

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