Chemistry
Grade-10
Easy
Question
Match the following according to the correct order of reactivity.
| a) Potassium | i) 4 |
| b) Calcium | ii) 2 |
| c) Zinc | iii) 3 |
| d) Lead | iv) 1 |
- a - iv, b - ii, c - iii, d - i
- a - iii, b - iv, c - i, d - ii
- a - i, b - ii, c - iii, d - iv
- a - iv, b - ii, c - i, d - iii
Hint:
a-iv, b-ii, c-iii, d-i
The correct answer is: a - iv, b - ii, c - iii, d - i
The order of reactivity of metals is as follows:
potassium - 1
calcium - 2
zinc - 3
lead - 4
Related Questions to study
Chemistry
Which of the following metal reacts with steam to produce oxide in place of hydroxide?
Which of the following metal reacts with steam to produce oxide in place of hydroxide?
ChemistryGrade-10
Chemistry
Assertion (A): Anodising is a process to prevent metal from corrosion.
Reason (R): Anodising is a process of coating iron with a layer of zinc.
Assertion (A): Anodising is a process to prevent metal from corrosion.
Reason (R): Anodising is a process of coating iron with a layer of zinc.
ChemistryGrade-10
Chemistry
Assertion: Al2O3, is an amphoteric oxide.
Reason: Al2O3 form salt and water when reacts with acid as well as a base.
Assertion: Al2O3, is an amphoteric oxide.
Reason: Al2O3 form salt and water when reacts with acid as well as a base.
ChemistryGrade-10
Chemistry
Choose the correct option for why sodium is kept immersed in kerosene oil?
Choose the correct option for why sodium is kept immersed in kerosene oil?
ChemistryGrade-10
Chemistry
What is the change observed when an aluminum strip is kept immersed in freshly prepared ferrous sulphate solution taken in a test tube. Choose one of the following
What is the change observed when an aluminum strip is kept immersed in freshly prepared ferrous sulphate solution taken in a test tube. Choose one of the following
ChemistryGrade-10
Chemistry
Choose one of the following which shows the correct arrangement of the given metals in ascending order of their reactivity.
Choose one of the following which shows the correct arrangement of the given metals in ascending order of their reactivity.
ChemistryGrade-10
Chemistry
Sodium and potassium due to their high reactivity are kept in:
Sodium and potassium due to their high reactivity are kept in:
ChemistryGrade-10
Chemistry
Choose one of the following metals that do not react with both hot and cold water?
Choose one of the following metals that do not react with both hot and cold water?
ChemistryGrade-10
Chemistry
Amphoteric oxide acts as
Amphoteric oxide acts as
ChemistryGrade-10
Chemistry
Chemical properties include:
Chemical properties include:
ChemistryGrade-10
Chemistry
When a metal reacts with the acid lead, it forms:
When a metal reacts with the acid lead, it forms:
ChemistryGrade-10
Chemistry
Rusting of iron takes place in
Rusting of iron takes place in
ChemistryGrade-10
Chemistry
Choose the correct formula for aluminium oxide from the below options.
Choose the correct formula for aluminium oxide from the below options.
ChemistryGrade-10
Chemistry
Metal + water 
__________ + __________
Metal + water __________ + __________
ChemistryGrade-10
Chemistry
Select the correct name for the compound: NaAlO2
Select the correct name for the compound: NaAlO2
ChemistryGrade-10
