Which of the following metals does not react with cold water?

Potassium

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Sodium

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Magnesium

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Calcium

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C
Magnesium

As the reactivity decreases in the order Potassium (K) > Sodium (Na) > Calcium (Ca) > Magnesium (Mg). So, tendency to react with cold water decreases and that's why magnesium does not reacts with cold water but it reacts slowly with hot water and vigorously with steam.

Suggest Corrections

Similar questions

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

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

Q. From the metals-copper, iron, magnesium, sodium and zinc-select a different metal in each case which :
(a) does not react with dilute hydrochloric acid.
(b) can form 2⁺ and 3⁺ ions.
(c) has a hydroxide that reacts with both acids and alkalis.
(d) does not react with cold water, but reacts with steam when heated.

From the metals: copper, iron,magnesium, sodium, and zinc, select a different metal in each case which:

(a) does not react with dilute hydrochloric acid,

(b) can form $2^{+}$ and $3^{+}$ ions,

(d) does not react with cold water but reacts with steam when heated.

(e) Arrange the above metals in their decreasing order of reactivity.

From the metals copper, iron, magnesium, sodium and zinc, select a different metal in each case which:
(i) does not react with dilute hydrochloric acid.
(ii) can form 2+ and 3+ ions.
(iii) has a hydroxide that reacts with both acids and alkalis.
(iv) does not react with cold water but reacts with steam when heated.
Arrange the metals in increasing order of reactivity.

Join BYJU'S Learning Program