JEE Main 2023 · ChemistryNumerical answerNumerical valueMediumRecall

JEE Main 13 April 2023, Shift 2, Chemistry Q89

Question 89 of 90 in this shift, Chemistry question 29 of 30, Section B.

If the formula of Borax is

\mathrm{Na_2B_4O_x(OH)_y\cdot zH_2O}

, then

x+y+z=

______

Official answer

NTA final key.

Chapter: The p-Block Elements
Topic: Group 13 & 14
Idea tested: Borax and Boric Acid

Same idea in other shifts

Asked 3× in all

26 Jul 2022, Shift 2 · Q70Given below are two statements: one is labelled as **Assertion A** and the other is labelled as **Reason R**. **Assertion A:** Boric acid…EasyAssertion–reason
29 Jun 2022, Shift 2 · Q71Aqueous solution of which of the following boron compounds will be strongly basic in nature?MediumSingle correct

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.