Chemistry
Assertion (A): Sulphuric acid is known as the oil of vitriol.
Reason (R): Sulphuric acid was first obtained by heating crystals of green vitriol.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Sulphuric Acid
4 Likes
Answer
Both A and R are true and R is the correct explanation of A.
Explanation— Sulphuric acid is referred to as Oil of vitriol because in the later middle ages, it was obtained as an oily viscous liquid by heating crystals of green vitriol. Hence, the assertion (A) is true.
Sulphuric acid was first obtained by heating crystals of green vitriol. Hence, reason (R) is true.
Reason (R) explains why sulphuric acid is known as the oil of vitriol. Hence, reason (R) is the correct explanation of assertion (A).
Answered By
2 Likes
Related Questions
The substance which can be used as drying as well as dehydrating agent is :
- conc. H2SO4
- conc. HNO3
- Conc. HCl
- conc. H2CO3
The compound formed by the oxidation of sulphur by nitric acid is :
P — Sulphuric acid
Q — Nitrogen dioxide
R — Sulphur dioxide
- Only P
- Only Q
- Only R
- Both P and Q
Assertion (A): V2O5 or Pt is used in the catalytic oxidation of sulphur dioxide
Reason (R): The catalytic oxidation of SO2 is an exothermic reaction, so it requires to be heated to about 450°C only in the beginning.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Assertion (A): Sulphuric acid when dissolved in water forms a basic salt
Reason (R): Sulphuric acid ionises in two stages, it is a dibasic acid.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.