Chemistry
Grade-10
Easy
Question
The acids present in the royal water is:
- HCl and HNO3
- HCl and H2SO4
- H2SO4 and HNO3
- Acetic acid and HCl
Hint:
HCL and HNO3
The correct answer is: HCl and HNO3
Aqua regia, Latin for Royal water, is a solution of nitrohydrochloric acid. The traditional solution is comprised of a 3:1 mixture of hydrochloric acid and nitric acid respectively.
Related Questions to study
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
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
