Chemistry
Grade-10
Easy
Question
Which metal from the following does not corrode easily?
- Iron
- Gold
- Platinum
- Both (b) and (c)
Hint:
Both (b) and (c)
The correct answer is: Both (b) and (c)
Gold and Platinum are the metals which do not corrode easily since they are unaffected by Oxygen and other acids, they do not corrode visibly and are more stable than many of their compounds, such as oxides and sulphides. They are given the name noble metals because of their lack of chemical reactivity.
Related Questions to study
Chemistry
Assertion: Different metals have different reactivities with water and dilute acids.
Reason: The reactivity of a metal depends on the reactivity series.
Assertion: Different metals have different reactivities with water and dilute acids.
Reason: The reactivity of a metal depends on the reactivity series.
ChemistryGrade-10
Chemistry
The metal that starts floating over the surface of the water on reaction with water is -
The metal that starts floating over the surface of the water on reaction with water is -
ChemistryGrade-10
Chemistry
________ is the process of forming a thick layer of oxide of aluminium.
________ is the process of forming a thick layer of oxide of aluminium.
ChemistryGrade-10
Chemistry
The colour of the oxide formed when copper reacts with the oxygen is-
The colour of the oxide formed when copper reacts with the oxygen is-
ChemistryGrade-10
Chemistry
The acids present in the royal water is:
The acids present in the royal water is:
ChemistryGrade-10
Chemistry
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 |
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 |
ChemistryGrade-10
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