JEE Main 2020 · ChemistryNumerical answerNumerical valueMediumCalculation

JEE Main 8 January 2020, Shift 1, Chemistry Q46

Question 46 of 75 in this shift, Chemistry question 21 of 25, Section B.

Ferrous sulphate heptahydrate is used to fortify foods with iron. The amount (in grams) of the salt required to achieve 10 ppm of iron in 100 kg of wheat is ______. Atomic weight : Fe = 55.85; S = 32.00; O = 16.00

Official answer

4.95 to 4.99

NTA final key (Jan 2020). Any value in the range scored.

Chapter: Some Basic Concepts of Chemistry
Topic: Mole Concept
Idea tested: PPM and Mass Percentage

Same idea in other shifts

Asked 4× in all

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Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.