Question

50. Oxygen is prepared on a large scale from:
(a) Water
(b) Air
(c) Potassium permagnate
(d) Sodium peroxide
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Answer 1

Water is the correst option

Answer 2

Oxygen is prepared on a large scale from:

(a) Water

(b) Air

(c) Potassium permagnate

(d) Sodium peroxide

The correct answer is :

(b) Air

Explanation :

Oxygen is prepared on a large scale from Air.

Oxygen, also known as Pranavayu , is a very important gas found in the Earth's atmosphere. This gas is very essential for all living beings, that is why it is called Pranavayu. No living being can survive without oxygen. Oxygen is found in abundance in the air. Through this all living beings get oxygen through respiration.

Oxygen is a colourless, odourless, tasteless gas. Its chemical symbol is 'O'. It is found in greatest quantity in air and water. Due to its abundance in the air, most of the oxygen is produced from the air itself. Water also combines with oxygen and hydrogen. Oxygen is the most abundant element in the earth's crust.

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Know something more :

During the period of emergency the breathing quickens to-

1) Prevent the collapsing of lungs

2) Supply more oxygen to the tissues

3) Control the heart beat

4) Prevent collapsing of heart​

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Simple syrup is _ solution of sucrose in water having sucrose concentration.

66.7% W/W saturated

66.2% w/w saturated

66.5% w/w saturated

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