NCERT Quiz - Class 10 Science Chapter 3 MCQs
Exercise :
Class 10 Science Chapter 3 MCQs — General Questions
1.
Which of the following pairs will give displacement reactions?
Answer:
D
Explanation:
When copper metal is placed in a silver nitrate solution, a spontaneous single-displacement reaction occurs because copper is more reactive than silver.
2.
Which of the following methods is suitable for preventing an iron frying pan from rusting?
Answer:
C
Explanation:
Applying a coating of zinc or galvanization is the most suitable for a frying pan
3.
An element reacts with oxygen to give a compound with a high melting point. This compound is also soluble in water. The element is likely to be:
Answer:
A
Explanation:
The element is calcium. Calcium reacts with oxygen to form calcium oxide. Question talks about melting point means compound likely to be a solid.
4.
Food cans are coated with tin and not with zinc because:
Answer:
C
Explanation:
Zinc is more reactive than tin and it can react with the food contents inside the can.
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