MEDIUM
Earn 100

Write a word equation for the chemical reaction involved when sodium reacts with water.
Important Questions on Material : Metals and Non-Metals
EASY

EASY

MEDIUM
Which gas is usually liberated when an acid reacts with a metal? Illustrate with an example. How will you test for the presence of this gas?

EASY

EASY

MEDIUM
Write a chemical equation for the reaction taking place in the test tube. How does the colour of the solution change? What is the change in colour of iron nails?

HARD

EASY

MEDIUM

EASY

MEDIUM
Give reasons-
Why copper is used to make hot water tanks and not steel (an alloy of iron)?

MEDIUM

MEDIUM

EASY

MEDIUM

HARD

HARD

HARD

EASY

MEDIUM

