Question:
The temperature at which an oil starts to solidify is known as
The temperature at which an oil starts to solidify is known as
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Cloud point indicates the beginning of wax separation or solidification in oil during cooling.
Updated On: May 4, 2026
- Flash point
- Cloud point
- Pour point
- Aniline point
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The Correct Option is B
Solution and Explanation
Concept:
In fuels and lubricating oils, different temperature points are used to describe their behaviour during heating and cooling.
Step 1: Cloud point is the temperature at which wax crystals first start appearing in oil during cooling.
Step 2: At this temperature, the oil begins to look cloudy because some constituents start to solidify.
Step 3: Flash point is the temperature at which vapours of oil can catch fire momentarily.
Step 4: Pour point is the lowest temperature at which oil can still flow.
Step 5: Since the question asks for the temperature at which oil starts to solidify, the correct term is cloud point. \[ \boxed{\text{Cloud point}} \]
In fuels and lubricating oils, different temperature points are used to describe their behaviour during heating and cooling.
Step 1: Cloud point is the temperature at which wax crystals first start appearing in oil during cooling.
Step 2: At this temperature, the oil begins to look cloudy because some constituents start to solidify.
Step 3: Flash point is the temperature at which vapours of oil can catch fire momentarily.
Step 4: Pour point is the lowest temperature at which oil can still flow.
Step 5: Since the question asks for the temperature at which oil starts to solidify, the correct term is cloud point. \[ \boxed{\text{Cloud point}} \]
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