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P Block Elements question

2022 · Q100
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P Block Elements question

2022 · Q100

NEETChemistryP Block ElementsMCQ+4 / −1

Match List-I with List-II :

List-I
(Compounds)		 List-II
(Molecular formula)
(a) Borax (i) NaBO2_22​
(b) Kernite (ii) Na2_22​B4_44​O7_77​ . 4H2_22​O
(c) Orthoboric acid (iii) H3_33​BO3_33​
(d) Borax bead (iv) Na2_22​B4_44​O7_77​ . 10H2_22​O

Choose the correct answer from the options given below :

  1. A
    (a) - (i), (b) - (iii), (c) - (iv), (d) - (ii)
  2. B
    (a) - (iv), (b) - (ii), (c) - (iii), (d) - (i)
  3. C
    (a) - (ii), (b) - (iv), (c) - (iii), (d) - (i)
  4. D
    (a) - (iii), (b) - (i), (c) - (iv), (d) - (ii)
View written solutionFree

Correct answer: B

$\bullet$ Borax : Na2B4O7 . 10H2O = Na2[B4O5(OH)4] . 8H2O

$\bullet$ Kernite : Na2B4O7 . 4H2O

$\bullet$ Orthoboric acid : H3BO3 = B(OH)3

$\bullet$ Borax bead : NaBO2 (Sodium metaborate)

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