Question:
Which among the following is NOT the use of $\text{SO}_2$ gas?
Which among the following is NOT the use of $\text{SO}_2$ gas?
Show Hint
Always carefully differentiate between the oxidation states of sulfur gases: $\text{SO}_2$ is sulfur(IV) oxide, while $\text{SO}_3$ is sulfur(VI) oxide. It is exclusively the higher oxidized state, $\text{SO}_3$, that combines with sulfuric acid to give oleum.
Updated On: Jun 4, 2026
- As a preservative
- In manufacture of $\text{H}_2\text{SO}_4$
- With conc. $\text{H}_2\text{SO}_4$ it forms oleum
- As an antichlor
Show Solution
Verified By Collegedunia
The Correct Option is C
Solution and Explanation
Step 1: Understanding the Question:
The problem asks us to identify the statement that describes an incorrect chemical chemical property or application of sulfur dioxide ($\text{SO}_2$) gas from the given multiple-choice options.
Step 2: Detailed Explanation:
Let us analyze the standard industrial and laboratory applications of sulfur dioxide ($\text{SO}_2$):
Preservative: Due to its strong antimicrobial and antioxidant nature, $\text{SO}_2$ is widely used as a preservative in food industries, particularly for dried fruits and winemaking.
Manufacture of $\text{H}_2\text{SO}_4$: In the Contact Process, $\text{SO}_2$ is an essential starting intermediate which undergoes catalytic oxidation to produce sulfur trioxide ($\text{SO}_3$).
Antichlor: $\text{SO}_2$ acts effectively as an antichlor because it reduces residual chlorine gas into harmless chloride ions after bleaching operations in textile and paper pulp mills.
Now let's look at the chemistry of oleum formation:
Oleum (fuming sulfuric acid, $\text{H}_2\text{S}_2\text{O}_7$) is chemically synthesized by dissolving sulfur trioxide ($\text{SO}_3$) gas directly into highly concentrated sulfuric acid ($\text{H}_2\text{SO}_4$):
$$ \text{H}_2\text{SO}_4 + \text{SO}_3 \rightarrow \text{H}_2\text{S}_2\text{O}_7 $$ Sulfur dioxide ($\text{SO}_2$) gas does not react directly with concentrated $\text{H}_2\text{SO}_4$ to form oleum. Therefore, the statement in option (C) is factually incorrect.
Step 3: Final Answer: The statement that is NOT a correct use or property of $\text{SO}_2$ is option (C).
The problem asks us to identify the statement that describes an incorrect chemical chemical property or application of sulfur dioxide ($\text{SO}_2$) gas from the given multiple-choice options.
Step 2: Detailed Explanation:
Let us analyze the standard industrial and laboratory applications of sulfur dioxide ($\text{SO}_2$):
Preservative: Due to its strong antimicrobial and antioxidant nature, $\text{SO}_2$ is widely used as a preservative in food industries, particularly for dried fruits and winemaking.
Manufacture of $\text{H}_2\text{SO}_4$: In the Contact Process, $\text{SO}_2$ is an essential starting intermediate which undergoes catalytic oxidation to produce sulfur trioxide ($\text{SO}_3$).
Antichlor: $\text{SO}_2$ acts effectively as an antichlor because it reduces residual chlorine gas into harmless chloride ions after bleaching operations in textile and paper pulp mills.
Now let's look at the chemistry of oleum formation:
Oleum (fuming sulfuric acid, $\text{H}_2\text{S}_2\text{O}_7$) is chemically synthesized by dissolving sulfur trioxide ($\text{SO}_3$) gas directly into highly concentrated sulfuric acid ($\text{H}_2\text{SO}_4$):
$$ \text{H}_2\text{SO}_4 + \text{SO}_3 \rightarrow \text{H}_2\text{S}_2\text{O}_7 $$ Sulfur dioxide ($\text{SO}_2$) gas does not react directly with concentrated $\text{H}_2\text{SO}_4$ to form oleum. Therefore, the statement in option (C) is factually incorrect.
Step 3: Final Answer: The statement that is NOT a correct use or property of $\text{SO}_2$ is option (C).
Was this answer helpful?
0
0
Top MHT CET Chemistry Questions
- The temperature of $32^{\circ}C$ is equivalent to
- The heat of formation of water is $ 260\, kJ $ . How much $ H_2O $ is decomposed by $ 130\, kJ $ of heat ?
- If a metal crystallises in bcc structure with edge length of unit cell $4.29 \times 10^{-8}\, cm$ the radius of metal atom is
- Which of the following oxides can act both as an oxidising agent as well as reducing agent ?
- "The mass and energy both are conserved in an isolated system", is the statement of
View More Questions
Top MHT CET Group 16 Elements Questions
- Identify the element that forms amphoteric oxide.
- Identify the element having general electronic configuration $ns^{2}np^{4}$ from following.
- Identify the correct order of acidity of hydrides of 16$^{th}$ group elements from the following.
- If four different elements A, B, C and D having outer electronic configuration as,
\(\text{A} = 3s^2 3p^4, \text{B} = 3s^2 3p^5, \text{C} = 4s^2 4p^4, \text{D} = 4s^2 4p^5\)
identify the element with lowest ionization enthalpy \((\Delta_i \text{H}_1)\) - Identify the correct order of acidity of hydrides of 16$^{th}$ group elements from the following.
View More Questions
Top MHT CET Questions
- During r- DNA technology, which one of the following enzymes is used for cleaving DNA molecule ?
- In non uniform circular motion, the ratio of tangential to radial acceleration is (r = radius of circle, $v =$ speed of the particle, $\alpha =$ angular acceleration)
- The temperature of $32^{\circ}C$ is equivalent to
- The line $5x + y - 1 = 0$ coincides with one of the lines given by $5x^2 + xy - kx - 2y + 2 = 0 $ then the value of k is
- The heat of formation of water is $ 260\, kJ $ . How much $ H_2O $ is decomposed by $ 130\, kJ $ of heat ?
View More Questions