Which of the following is not found in oceans?

a. sodium chloride
b. ferrous oxide
c. magnesium chloride
d. calcium sulphate

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Solution

The correct answer is option (b).

Explanation: The salinity of most of the oceans is mainly because of the presence of sodium chloride, magnesium chloride and sulphates of magnesium or calcium. Ferrous oxide is not among the salts or minerals found in oceans.

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Similar questions

Identify the odd one out and justify.

(a) Chloride, nitrate, hydride, ammonium

(b) Hydrogen chloride, sodium hydroxide, calcium oxide, ammonia

(d) Ammonium chloride, sodium chloride, potassium nitrate, sodium sulphate

(e) Sodium nitrate, sodium carbonate, sodium sulphate, sodium chloride

(f) Calcium oxide, magnesium oxide, zinc oxide, sodium oxide.

(g) Crystalline blue vitriol, crystalline common salt, crystalline ferrous sulphate, crystalline sodium carbonate.

(h) Sodium chloride, potassium hydroxide, acetic acid, sodium acetate.

Select from the following group of these salts which may be dissolved in water to make it hard.

(I) Sodium chloride
(II) Sodium sulphate
(III) Calcium chloride
(IV) Calcium sulphate
(V) Potassium chloride
(VI) Magnesium sulphate

Write the formulae of the salts given below.

Potassium sulphate, sodium sulphate, calcium sulphate, magnesium sulphate, copper sulphate, sodium chloride, sodium nitrate, sodium carbonate and ammonium chloride.

Q. A student requires hard water for an experiment in his laboratory which is not available in the neighbouring area. In the laboratory there are some salts, which when dissolved in distilled water can convert it into hard water. Select from the following groups of salts, which when dissolved in distilled water will make it hard.
(a) Sodium chloride, Potassium chloride
(b) Sodium sulphate, Potassium sulphate
(c) Sodium sulphate, Calcium sulphate
(d) Calcium sulphate, Magnesium chloride

Q. Hard water required for an experiment is not available in a school laboratory. However, the following salts are available in the laboratory. Select the salts which may be dissolved in water to make it hard for the experiment :

(1) calcium sulphate
(2) sodium sulphate
(3) calcium chloride
(4) potassium sulphate
(5) sodium hydrogen carbonate
(6) magnesium chloride

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Which of the following is not found in oceans? a. sodium chloride b. ferrous oxide c. magnesium chloride d. calcium sulphate

The correct answer is option (b). Explanation: The salinity of most of the oceans is mainly because of the presence of sodium chloride, magnesium chloride and sulphates of magnesium or calcium. Ferrous oxide is not among the salts or minerals found in oceans.

Which of the following is not found in oceans?

a. sodium chloride
b. ferrous oxide
c. magnesium chloride
d. calcium sulphate

The correct answer is option (b).

Explanation: The salinity of most of the oceans is mainly because of the presence of sodium chloride, magnesium chloride and sulphates of magnesium or calcium. Ferrous oxide is not among the salts or minerals found in oceans.