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Saturday, 31 October

JEE Main 2024 · ChemistryMultiple choiceSingle correctEasyMulti-step

JEE Main 5 April 2024, Shift 1, Chemistry Q68

Question 68 of 90 in this shift, Chemistry question 8 of 30, Section A.

The number of neutrons present in the more abundant isotope of boron is 'x'. Amorphous boron upon heating with air forms a product, in which the oxidation state of boron is 'y'. The value of x+yx+y is ________.
  1. (1)6
  2. (2)3
  3. (3)9Official answer
  4. (4)4

Official answer

Option 3

NTA final key.

Chapter
The p-Block Elements
Topic
No close match in our taxonomy
Idea tested
No close match in our taxonomy

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 108 of the 174 JEE Main shifts held from 2017 to 2026.