Question

Blue vitriol is

• A. sodium bicarbonate
• B. ${\mathrm{CuSO}}_4.5{\mathrm{H}}_2\mathrm{O}$
• C. copper sulphate
• D. ${\mathrm{NaHCO}}_3$

Answer 1

The correct option is B

${\mathrm{CuSO}}_4.5{\mathrm{H}}_2\mathrm{O}$

The explanation for the correct option -

• The blue vitriol is the blue-colored solution, it is hydrated Copper sulphate with the molecular formula ${\mathrm{CuSO}}_4.5{\mathrm{H}}_2\mathrm{O}$.
• Option B is correct because the chemical formula of blue vitriol is ${\mathrm{CuSO}}_4.5{\mathrm{H}}_2\mathrm{O}$.

The explanation for the incorrect options -

• Option A is incorrect because Sodium bicarbonate is a white-colored crystalline solid.
• Option C is incorrect because Blue vitriol is a hydrated compound of Copper sulphate.
• Option D is incorrect because the chemical formula of Sodium bicarbonate is ${\mathrm{NaHCO}}_3$.

Hence, options B and C are correct answers.