Which of the following does not react with cold water?

Potassium (K)

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Sodium (Na)

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Calcium (Ca)

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Aluminium (Al)

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Solution

The correct option is D
Aluminium (Al)

Aluminium (Al) does not react with cold water but it reacts with steam to produce hydrogen gas.

Potassium (K) and Sodium (Na) react vigorously with cold water and hydrogen gas produced immediately catches fire while calcium (Ca) reacts with cold water but the reaction is not that vigorous.

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Similar questions

Q. Question 4
Which one of the following metals does not react with cold as well as hot water?

a) Na
(b) Ca
(c) Mg
(d) Fe

Q. Question 4
Which one of the following metals does not react with cold as well as hot water?

a) Na
(b) Ca
(c) Mg
(d) Fe

Q. From amongst the metals sodium, calcium, aluminium, copper and magnesium, name the metal:
(a) which reacts with water only on boiling, and
(b) another which does not react even with steam.

Q. Assertion: Sodium reacts vigorously with cold water but magnesium does not react with cold water.
Reason: Sodium is more reactive than magnesium.

Write the following in the form of a word equation:
Sodium hydroxide reacts with calcium bromide to form calcium hydroxide and sodium bromide.In the formula $C a B r_{2}$ what does Ca stand for and what is its valency?

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