MEDIUM
8th CBSE
IMPORTANT
Earn 100

What is the nature (acidic/basic) of sulphur dioxide
Given reason for your choice.

Important Questions on Materials: Metals and Non-Metals

MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 4 - Materials: Metals and Non-Metals>Short Answer Type Questions>Q 48
What type of oxides are formed when metals combine with oxygen?
MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 4 - Materials: Metals and Non-Metals>Short Answer Type Questions>Q 48
What type of oxides are formed when non-metals combine with oxygen?
MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 4 - Materials: Metals and Non-Metals>Short Answer Type Questions>Q 49
Element A is soft, brittle and does not conduct electricity. Element B is hard, malleable and ductile, and also conducts electricity. Which of the two elements, A or B, is a non-metal?
MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 4 - Materials: Metals and Non-Metals>Short Answer Type Questions>Q 50
Consider the following elements:
Sodium, Sulphur, Carbon, Magnesium. Which of these elements will form acidic oxides?
EASY
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 4 - Materials: Metals and Non-Metals>Short Answer Type Questions>Q 50
Consider the following elements:
Sodium, Sulphur, Carbon, Magnesium. Which of these elements will form basic oxides?
MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 4 - Materials: Metals and Non-Metals>Short Answer Type Questions>Q 51
What happens when a copper vessel is exposed to moist air for a long time?
HARD
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 4 - Materials: Metals and Non-Metals>Short Answer Type Questions>Q 52
When a copper object is exposed to moist air for a long time, then a green coating is formed on its surface. What is the material of the green coating?
MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 4 - Materials: Metals and Non-Metals>Short Answer Type Questions>Q 52
When a copper object is exposed to moist air for a long time, then a green coating is formed on its surface. State whether the green coating is acidic or basic.