HARDMCQ SINGLEJEE Advanced ChemistryInorganic Chemistryp-Block (group 13 and 14)Achiever Section

Assertion : Boron is p block element. Reason : Last electron entres in p sub shell.

A.A

B.B✓ Correct

C.C

D.D

Explanation

B is p block elements 11. (A) Assertion : In water, orthoboric acid behaves as a weak monobasic acid. Reason : In water, othoboric acid acts as a proton donor. (a) A (b) B (c) C (d) D Orthoboric acid do not donate proton. p-BLOCK (GROUP 13 AND 14) 3 3 3 2 4 H BO H O B[OH] H - + + ® + It does not donate proton rather it accepts OH⁻ ion from water. 12. (A) Assertion : Borax bead test is not suitable for Al (III) Reason : Al₂O₃ is insoluble in water. (a) A (b) B (c) C (d) D Borax bead test is not suitable for Al (III). Because, it gives colourless flame in oxidising and reducing states. Alumin

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