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JEE · NEET Previous Year Question

$Which one of the following statements is not correct?$

Topic: JEE PYQ

Answer: C. Full step-by-step solution below.

A $The hydration enthalpies of alkali metal ions decrease down the group.$
B $Lithium halides are some what covalent in nature.$
C $Alkali metals react with water liberating oxygen gas.$
D $KO_{2} is paramagnetic.$

Correct answer: C

Solution

(c) 2 M (s) + 2 H_{2} O ⟶ 2 MOH + H_{2} (g) (Where M = Alkali Metals)

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