JEE Main 2019 — Hydrogen Question with Solution
From: JEE Main 2019 (Online) 10th April Evening Slot
Question
The correct statements among (a) to (d) are :
(a) saline hydrides produce H2 gas when reacted with H2O.
(b) reaction of LiAlH4 with BF3 leads to B2H6.
(c) PH3 and CH4 are electron - rich and electron - precise hydrides, respectively.
(d) HF and CH4 are called as molecular
(a) saline hydrides produce H2 gas when reacted with H2O.
(b) reaction of LiAlH4 with BF3 leads to B2H6.
(c) PH3 and CH4 are electron - rich and electron - precise hydrides, respectively.
(d) HF and CH4 are called as molecular
Choose an option
Show full solutionCorrect option: A
Correct answer
A(a), (b), (c) and (d)
Step-by-step explanation
(a) NaH + H2O NaOH + H2
(b) 3LiAlH4 + 4BF3 2B2H6 + 3LiF + 3AlF3
(c) PH3 is electron rich due to one lone pair while CH4 is electron precise hydride.
(d) HF and CH4 are molecular hydrides.
(b) 3LiAlH4 + 4BF3 2B2H6 + 3LiF + 3AlF3
(c) PH3 is electron rich due to one lone pair while CH4 is electron precise hydride.
(d) HF and CH4 are molecular hydrides.
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