Advertisements
Advertisements
Question
What is the most common way of expressing the concentration of a solution ?
Solution
Percentage method is the most common way of expressing the concentration of a solution.
APPEARS IN
RELATED QUESTIONS
Name the processes involved in two cases.
Define the following term of Atom .
Describe in your own words, what happens to the particles when salt dissolves in water.
When extremely small particles X derived from the anther of a flower were suspended in a liquid Y and observed through a microscope, it was found that the particles X were moving throughout the liquid Y in a very zig-zag way. It was also observed that warmer the liquid Y, faster the particles X moved on its surface.
- What could particles X be ?
- What do you think liquid Y is ?
- What is the zig-zag movement of X known as ?
- What is causing the zig-zag movement of particles X ?
- Name the scientist who discovered this phenomenon.
- What does this experiment tell us about the nature of liquid Y?
Name two solid, two liquid and two gaseous elements at the room temperature.
A solution contains 5.6 mL of alcohol mixed with 75 mL of water. Calculate the concentration of this solution.
How will you differentiate between a suspension and a colloid ?
One of the following does not show Tyndall effect. This one is :
What is the difference between colloids and suspensions ?
What difference in the property of two miscible liquids enables their separation by fractional distillation ?
Name the source from which nitrogen and oxygen are obtained on a large scale.
Name the process which can be used to purify an impure sample of copper sulphate.
How is scrap iron separated from a heap of waste materials in factories?
How is cream separated from milk ?
There are three liquids A, B and C, all having different densities and different boiling points. Liquids A and C are organic in nature whereas liquid B is considered to be inorganic. When liquids A and B are put together in a container, they form a single layer. On the other hand, when, liquids B and C are mixed, they form two separate layers :
(a) Which process will you use to separate a mixture of A and B ?
(b) Which method will you use to separate a mixture of B and C ?
(c) Name the liquids which would behave like (i) A (ii) B and (iii) C.
The non S I and S I units of some physical quantities are given in column A and column B respectively. Match the units belonging to the same physical quantity:
(A) | (B) | ||
(a) | degree celsius | (i) | kilogram |
(b) | centimetre | (ii) | pascal |
(c) | gram per centimetre cube | (iii) | metre |
(d) | bar | (iv) | kelvin |
(e) | milligram | (v) | kilogram per metre cube |
______ is used for industrial refrigeration and transporting frozen food.
Give an example of liquid in gas.
Define the term matter.