Freezing Point | MCQs

Explanation

Explanation

In the Fahrenheit scale:

• The freezing point of water is 32°F
• The boiling point of water is 212°F

Explanation

• The freezing point of water is 0°C (zero degrees Centigrade). 
• The boiling point of water on the Centigrade scale (also known as the Celsius scale) 100°C (one hundred degrees Centigrade).

Explanation

The freezing point of heavy water is 3.82°C:

| | Heavy water (D2O) | Regular water |

|---|---|---|

| Freezing point | 3.82°C | 0°C |

| Boiling point | 101.42°C | 100°C | 

Heavy water is made up of two deuterium atoms and one oxygen atom.

It contains more deuterium, a hydrogen isotope, than regular water, which contains hydrogen-1.

Heavy water is used in reaction mechanisms.

It is is prepared by electrolyzing water.

Explanation

Water is the only known non-metallic substance that expands when it freezes

its density decreases and it expands by approximately 9% by volume.

Explanation

Explanation

• The freezing point of a liquid can be affected by pressure.
• This is known as the "pressure melting point" effect.
• As pressure increases, the freezing point of a liquid can also increase.

Explanation

• The freezing point of water (0°C or 32°F) is the same as its melting point.
• Which is the temperature at which water will freeze or melt.

Explanation

The symbol of mercury is Hg .

Freezing point of mercury is -38.83C.

Boiling point of Mercury is 356.7 C.

Explanation

Water freezes and melts at 0°C (32°F) under standard atmospheric pressure.

At this temperature, water can exist in both solid (ice) and liquid forms depending on whether heat is being added or removed.