SSC
CHEMISTRY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
Which of the following IS a mixture?
|
|
air
|
|
|
hydrogen
|
|
|
water
|
|
|
sugar
|
Explanation:
Detailed explanation-1: -Air has 78% Nitrogen, 21% Oxygen and 1% other constituents such as CO2, water vapour etc. About 100 years ago proportion of CO2 in air was about 0.029% and now it is 0.035%. Thus we see that it’s proportion has changed. Therefore, air is a mixture.
Detailed explanation-2: -Water is a homogenous mixture of nitrogen, oxygen and smaller quantities of other compounds from the gaseous liquids. Air contains 78% of nitrogen, 21% of oxygen, and 1% of other elements such as CO2, water vapour etc.
Detailed explanation-3: -Air is a mixture of only three gasses nitrogen, oxygen and carbon dioxide.
Detailed explanation-4: -Among the given options, the air is a mixture as it is composed of different gases.
There is 1 question to complete.