MEDIUM
10th CBSE
IMPORTANT
Earn 100

Differentiate between roasting and calcination.

Important Questions on Metals and Non-Metals

MEDIUM
10th CBSE
IMPORTANT
New Millenium Science - Chemistry Class X>Chapter 3 - Metals and Non-Metals>SELF-EVALUATION TEST>Q 3
Elements 'Q' and 'S' react together to form an ionic compound under normal conditions. What will be the physical state of the compound 'QS'? Can both 'Q' and 'S' be metals? Justify your answer.
HARD
10th CBSE
IMPORTANT
New Millenium Science - Chemistry Class X>Chapter 3 - Metals and Non-Metals>SELF-EVALUATION TEST>Q 4
Show the formation of NaCl from sodium and chloride atoms by the transfer of electrons.
MEDIUM
10th CBSE
IMPORTANT
New Millenium Science - Chemistry Class X>Chapter 3 - Metals and Non-Metals>SELF-EVALUATION TEST>Q 4
Why does sodium chloride have a high melting point?
MEDIUM
10th CBSE
IMPORTANT
New Millenium Science - Chemistry Class X>Chapter 3 - Metals and Non-Metals>SELF-EVALUATION TEST>Q 5

Give reason for the following:

Zinc oxide is generally considered as an amphoteric oxide.

MEDIUM
10th CBSE
IMPORTANT
New Millenium Science - Chemistry Class X>Chapter 3 - Metals and Non-Metals>SELF-EVALUATION TEST>Q 5

Give reason for the following:

Zirconium is known as a strategic metal.

EASY
10th CBSE
IMPORTANT
New Millenium Science - Chemistry Class X>Chapter 3 - Metals and Non-Metals>SELF-EVALUATION TEST>Q 5

Give reason for the following:

Nitrogen is used to preserve food. 

EASY
10th CBSE
IMPORTANT
New Millenium Science - Chemistry Class X>Chapter 3 - Metals and Non-Metals>SELF-EVALUATION TEST>Q 6
Give one example of a most malleable and ductile metal.
MEDIUM
10th CBSE
IMPORTANT
New Millenium Science - Chemistry Class X>Chapter 3 - Metals and Non-Metals>SELF-EVALUATION TEST>Q 6
Give one example of a metal which is the best conductor of heat.