Advertisements
Advertisements
Question
Choose the correct answer.
A 15% alcohol solution means :
Options
15 mL alcohol and 85 mL water.
15 mL alcohol and 100 mL water.
Solution
A 15% alcohol solution means 15 ml alcohol is dissolved in 85 ml of water. Therefore “a” is the correct option.
APPEARS IN
RELATED QUESTIONS
A kind of matter which can sublime is
What is the scientific name of particles which make up mater?
Name a metal which is soft and a non-metal which is hard.
Name a metal which has no fixed shape.
In the following set of substances, one item does not belong to the set. Select this item and explain why it does not belong to the set :
Hydrogen, Oxygen, Steam, Chlorine
Which of the two will scatter light : soap solution or sugar solution ? Why ?
Name the different types of solutions. Give one example of each.
Classify the following into solutions, suspensions and colloids :
Soda-water, Milk, Brine, Blood, Ink, Smoke in air, Chalk water mixture, Milk of Magnesia, Shaving cream, Muddy river water.
Define Sol and give one example.
Define the Emulsion Give one example.
21.5 g of sodium chloride dissolves in 60 g of water at 25°C. Calculate the solubility of sodium chloride in water at that temperature.
One of the following is a solid foam. This one is :
What difference in the property of two miscible liquids enables their separation by fractional distillation ?
State whether the following statement are true or false :
Salt and water can be recovered from an aqueous salt solution by the process of evaporation.
A carpenter wants to separate iron nails from saw-dust. Which method of separation should he choose ?
The material which is added to water during purification process at the water works so as to disinfect it is :
Define the term matter.
You want to wear your favourite shirt to a party, but the problem is that it is still wet after a wash. What steps would you take to dry it faster?
Non-metals are usually poor conductors of heat and electricity. They are non-lustrous, non-sonorous, non-malleable and are coloured.
Name a non-metal which exists as a liquid at room temperature.
Define the term matter.
