Advertisements
Advertisements
प्रश्न
You are given two samples of water labelled as ‘A’ and ‘B’. Sample ‘A’ boils at 100°C and sample ‘B’ boils at 102°C. Which sample of the water will not freeze at 0°C? Comment.
Advertisements
उत्तर
Sample ‘B’ which boils at 102°C contains impurities. It will not freeze at 0°C. There will be a depression at the freezing point.
APPEARS IN
संबंधित प्रश्न
What are the characteristic properties of a pure substance? Why do we need them?
Define :- Miscible liquids
Select homogeneous and heterogeneous mixtures from the following:
The salt solution, petrol, and water, sand, and charcoal, alcohol and water, air dissolved in water, air, seawater, fruit juices, mist, brass.
Fill in the blanks
The substances that make a mixture are called its ______or_________.
Fill in the blanks
___________is a process to obtain a very pure form of a solid dissolved in a liquid.
Write “true” or “false” for the following statement
Winnowing is a process to remove small stones from grains.
Name the following:
A physical method of separating iron from an iron-sulfur mixture.
Name the following:
A mixture of two immiscible liquids
Four atoms of hydrogen combine with one atom of carbon to give methane [CH4]. State the valency of carbon.
Air is a ______.
