Question:
Which of the following statements are NOT true for photochemical smog?
Which of the following statements are NOT true for photochemical smog?
Show Hint
• Photochemical smog → NO$_x$ + hydrocarbons + sunlight
• SO$_2$ → Acid rain reducing smog
Updated On: May 13, 2026
- It is called oxidizing smog
- Its main component is SO$_2$
- It occurs in warm and dry climate
- It is formed due to burning of fossil fuels
Show Solution
Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Concept:
Photochemical smog is formed due to reactions of nitrogen oxides (NO$_x$) and hydrocarbons in the presence of sunlight.
• Called oxidizing smog
• Major components include ozone (O$_3$), PAN, NO$_2$
Step 1: Analyzing each statement.
• (A): Called oxidizing smog → True.
• (B): Main component is SO$_2$ → False (SO$_2$ is associated with reducing smog).
• (C): Occurs in warm and dry climate → True.
• (D): Formed due to fossil fuel burning → True.
Step 2: Selecting the incorrect statement.
Thus, statement (B) is NOT true.
• Called oxidizing smog
• Major components include ozone (O$_3$), PAN, NO$_2$
Step 1: Analyzing each statement.
• (A): Called oxidizing smog → True.
• (B): Main component is SO$_2$ → False (SO$_2$ is associated with reducing smog).
• (C): Occurs in warm and dry climate → True.
• (D): Formed due to fossil fuel burning → True.
Step 2: Selecting the incorrect statement.
Thus, statement (B) is NOT true.
Was this answer helpful?
0
0
Top GAT B Biology Questions
- Bacillus thuringiensis CryA controls certain caterpillar pests by
- The principle driving force behind movement of water in plants is known as
Given below are two statement - one is labelled as Assertion A and the other is labelled as Reason R:
Assertion A: Bacterial lipopolysaccharide (LPS) on its own does not induce memory B-cell in humans.
Reason R: LPS does not activate T-cell.
In light of the above statements, choose the most appropriate answer from the options given below:Francis & Crick proposed the scheme called Central Dogma in 1958. Which of the following processes was NOT covered in this scheme?
- Which one of the following is NOT an auxin?
View More Questions
Top GAT B Climate and Ecology Questions
- The study of various atmospheric parameters is called
- Which of the following is true for a water sample with BOD value of more than 50 ppm?
- The issue of pesticide contamination of carbonated drinks was brought into limelight by which of the following NGO?
- The UN Conference on Environment and Development (UNCED) is popularly known as
Top GAT B Questions
- Which one of the following modifications is NOT a natural N-terminal modification of proteins?
- Bacillus thuringiensis CryA controls certain caterpillar pests by
- Respiratory pathway is considered as a ________ pathway
- Many enzymes catalyze both forward and reverse reactions. Which one of the following statement is NOT correct?
- Which law of thermodynamics states that "energy of an isolated system is constant"?
View More Questions