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Prelims 2017 paper

UPSC CSE Prelims 2017 · Question 73 · Physics & chemistry in everyday life

Consider the following pairs: Lipstick — Lead

Prelims 2017 · Q73

Physics & chemistry in everyday life Medium

Consider the following pairs:

Commonly used / consumed materialsUnwanted or controversial chemicals likely to be found in them
1.LipstickLead
2.Soft drinksBrominated vegetable oils
3.Chinese fast foodMonosodium glutamate

Which of the pairs given above is/are correctly matched?

Answer & explanation

Answer: (d) 1, 2 and 3

All three pairs are correct. Each names a chemical that has drawn regulatory or health concern in an everyday product: lead in cosmetics such as lipstick, brominated vegetable oil in soft drinks, and added monosodium glutamate (MSG) in Chinese-style fast food.

  • ✓ 1. Lead is a toxic heavy metal that can turn up as a contaminant in cosmetics. Indian rules bar lead compounds as colouring in cosmetics and Indian Standards set a 20 ppm ceiling for lead.
  • ✓ 2. Brominated vegetable oil (BVO) is a clouding agent that has been used in soft drinks. WHO's food-additive expert committee (JECFA) allocated it no acceptable daily intake, and FSSAI's manual carries a test to detect BVO in soft drinks.
  • ✓ 3. MSG is a flavour enhancer commonly added in Chinese-style cooking. It is controversial enough that FSSAI requires a label on foods with added MSG, saying it is not recommended for infants below 12 months and pregnant women.

Remember · Lead in lipstick, brominated vegetable oil in soft drinks, MSG in Chinese fast food: all three are chemicals of health concern, so all pairs match.

Sources

Question and answer: UPSC's official GS Paper I (2017, Series A) — paper ↗ · answer key ↗. Explanation: Minimalist IAS, checked 30 Sept 2026 (how we verify). ·

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