(A) When SO₂ is passed into dichromate solution, green colour is observed
(R) SO₂ acts as oxidant as well as reductant

see full answer

Start JEE / NEET / Foundation preparation at rupees 99/day !!

21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!

An Intiative by Sri Chaitanya

(A) is true but (R) is false

Both (A) and (R) are true and (R) is the correct explanation of (A)

Both (A) and (R) are false

Both (A) and (R) are true and (R) is not the correct explanation of (A)

answer is B.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

If sulfur dioxide gas is bubbled through acidified potassium dichromate solution, the orange solution turns green, indicating that $C r_{2} O_{7}^{- 2}$ has been reduced to Cr³⁺.

$C r_{2} O_{7}^{- 2} + 2 H^{+} + 3 S O_{2} \to 2 C r^{3 +} + H_{2} O + 3 S O_{4}^{- 2}$

Watch 3-min video & get full concept clarity

hear from our champions

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Books for IIT JEE

Best Books for NEET

🔥 Start Your JEE/NEET Prep at Just ₹1999 / month - Limited Offer! Check Now!

Get Expert Academic Guidance – Connect with a Counselor Today!