MEDIUM
10th CBSE
IMPORTANT
Earn 100

A metal E is stored under kerosene. When a small piece of it is left open in air, it catches fire. When the product formed is dissolved in water, it turns red litmus to blue. Write the chemical equation for the reaction when it is exposed to air and when the product is dissolved in water.

Important Questions on Metals and Non-Metals

HARD
10th CBSE
IMPORTANT
SUPER SIMPLIFIED SCIENCE CHEMISTRY CLASS X>Chapter 3 - Metals and Non-Metals>Test Your Knowledge>Q 25
A metal E is stored under kerosene. When a small piece of it is left open in air, it catches fire. When the product formed is dissolved in water, it turns red litmus to blue. Explain the process by which the metal E is obtained from its molten chloride.
HARD
10th CBSE
IMPORTANT
SUPER SIMPLIFIED SCIENCE CHEMISTRY CLASS X>Chapter 3 - Metals and Non-Metals>Test Your Knowledge>Q 26
Write the names and symbols of two most reactive metals. Explain by drawing electronic structure how any one of the two metals reacts with a halogen. State any four physical properties of the compound formed.
HARD
10th CBSE
IMPORTANT
SUPER SIMPLIFIED SCIENCE CHEMISTRY CLASS X>Chapter 3 - Metals and Non-Metals>Test Your Knowledge>Q 27
Explain the steps for extraction of copper from its sulphide ore. Write the balanced equations involved in the process.
HARD
10th CBSE
IMPORTANT
SUPER SIMPLIFIED SCIENCE CHEMISTRY CLASS X>Chapter 3 - Metals and Non-Metals>Test Your Knowledge>Q 27
What is meant by refining of metals? Draw a diagram of electrolytic refining of copper and name the substances used as cathode, anode and the electrolyte.
MEDIUM
10th CBSE
IMPORTANT
SUPER SIMPLIFIED SCIENCE CHEMISTRY CLASS X>Chapter 3 - Metals and Non-Metals>Test Your Knowledge>Q 28
A metal 'X' acquires a green colour coating on its surface on exposure to air. Identify the metal 'X' and name the process responsible for this change.
HARD
10th CBSE
IMPORTANT
SUPER SIMPLIFIED SCIENCE CHEMISTRY CLASS X>Chapter 3 - Metals and Non-Metals>Test Your Knowledge>Q 28
A metal 'X' acquires a green colour coating on its surface on exposure to air.
Name and write chemical formula of the green coating formed on the metal.
MEDIUM
10th CBSE
IMPORTANT
SUPER SIMPLIFIED SCIENCE CHEMISTRY CLASS X>Chapter 3 - Metals and Non-Metals>Test Your Knowledge>Q 28
List two important methods to prevent corrosion.
MEDIUM
10th CBSE
IMPORTANT
SUPER SIMPLIFIED SCIENCE CHEMISTRY CLASS X>Chapter 3 - Metals and Non-Metals>Test Your Knowledge>Q 29
Give reason for the following:
Ionic compounds have high melting points and boiling points.