Chemistry · 2019
JEE Main · 10 April 2019, Shift 2 · Q43
The correct statements among (a) to (d) are: (a) saline hydrides produce H_2 gas when reacted with H_2 O. (b) reaction of LiAlH_4 with BF_3 leads to…
The correct statements among (a) to (d) are:
(a)
saline hydrides produce $\displaystyle \mathrm{H}_2$ gas when reacted with $\displaystyle \mathrm{H}_2 \mathrm{O}$.
(b)
reaction of $\displaystyle \mathrm{LiAlH}_4$ with $\displaystyle \mathrm{BF}_3$ leads to $\displaystyle \mathrm{B}_2 \mathrm{H}_6$.
(c)
$\displaystyle \mathrm{PH}_3$ and $\displaystyle \mathrm{CH}_4$ are electron - rich and electron - precise hydrides, respectively.
(d)
$\displaystyle \mathrm{HF}$ and $\displaystyle \mathrm{CH}_4$ are called as molecular hydrides.
Official answer
(4)
(a) , (b), (c) and (d).
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JEE Main 2019 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.