Paper 1 · People, Development and Environment
Statement 1: Industries generating hazardous waste are classified as red. Statement 2: Intake of lead, also known as an anti-knocking agent (tetraethyl), may primarily cause damage to the brain. Statement 3: The chemical responsible for blue baby syndrome, caused by restricted supply of oxygen to the brain, is linked to nitrates. Which of the above statements are true?
- Industries generating hazardous waste are classified as red
- Intake of lead (tetraethyl, an anti-knocking agent) may primarily damage the brain
- The chemical behind blue baby syndrome is linked to nitrates
AOnly statements 1 and 2 are true
BOnly statements 2 and 3 are true
COnly statements 1 and 3 are true
DStatements 1, 2 and 3 are true ✓ Correct
Correct answer: (D) Statements 1, 2 and 3 are true — All three statements are true, so that is the answer.
Explanation
★All three statements are true, so that is the answer.
★Industries making hazardous waste are put in the red category.
★Lead, a tetraethyl anti-knocking agent, mainly harms the brain.
★Blue baby syndrome is linked to nitrates in water.
★So each of the three statements is true.
★So the answer is statements 1, 2 and 3.
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