Which water will freeze first?

A. Hot
B. Cold
C. Both
D. None

Submitted by: ENGR. HAFIZ RASHEED

One explanation of the effect is that as the hot water cools, it loses mass to evaporation. With less mass, the liquid has to lose less heat to cool, and so it cools faster. With this explanation, the hot water freezes first, but only because there’s less of it to freeze.

Related Mcqs:

When water is filled in a bottle and is allowed to freeze, the bottle breaks because
A. Water expands on freezing
B. Bottle contracts at freezing point
C. temperature outside the bottle is less than that inside the bottle.
D. None of the above
In a very low temperature which from the following will freeze at last?
A. River water
B. Canal water
C. Sea water
D. Water in a lake
A lake starts freezing because of the cold atmosphere. It will first freeze
A. At the bottom
B. ln the middle pan
C. At the top surface
D. Uniformly throughout the water body
The salinity of sea water is determined by the amount of common salt (Sodium Chloride) in __________ of sea water.
A. 1 gram
B. 10 grams
C. 1 kg
D. 10 kg
Water is heated in a kettlE. The inside water is heated by convection. A person sitting near the fire receives heat by ________?
A. Conduction
B. Convection
C. Radiation
D. Reflection
E. None of these
Why are soft drink made with chilled water rather than water at room temperature?
A. Ingredients dissolve better in chilled water
B. Chilled water enhances the taste
C. Chilled water attracts more carbon dioxide
D. Chilled water is more hygienic

Submitted by: Ashfaque Ali Khoso
For seeing objects at the surface of water from a submarine under water, the instrument used is ________?
A. Periscope
B. Telescope
C. Kaleidoscope
D. Spectroscope

Submitted by: Rashid Mehmood
Sea water (Salt water) freezes at ?
A. Same temperature as fresh water.
B. Slightly higher temperatures than fresh water.
C. Slightly higher temperature than fresh water.
D. Sea water does not freeze

Submitted by: Mansoor Ahmed Suhag
Underground water and the water on the earth’s surface is called ?
A. Mezosphere
B. Ionosphere
C. Hydrosphere
D. None of these

Submitted by: Haziq
Water has maximum density at____________?
A. 0°C
B. 4°C
C. 4° K
D. 4.8°C