Advertisements
Advertisements
Question
What is meant by the concentration of a solution ?
Solution
The concentration of a solution is the amount of solute present in given quantity of the solution.
APPEARS IN
RELATED QUESTIONS
Gases have definite volume but no definite shape.
Which of the following materials fall in the category of a “pure substance”?
- Ice
- Milk
- Iron
- Hydrochloric Acid
- Calcium oxide
- Mercury
- Brick
- Wood
- Air
Classify the following into elements, compounds and mixtures :
arble, Air, Gold, Brass, Sand, Diamond, Graphite, Petroleum, Common salt, Sea-water, Chalk
Which of the following is not an element ?
“Is malleable and ductile” best describes :
Iron powder and sulphur powder were mixed together and divided into two parts A and B. When part A was heated strongly over a burner, then a substance C was formed. The part B was, however, not heated at all. When dilute hydrochloric acid was added to substance C, then gas D was evolved and when dilute hydrochloric acid was added to part B then gas E was evolved.
- What type of substance is B ?
- What type of substance is C ?
- Name the gas (i) D, and (ii) E ?
- State one characteristic property of gas D.
- Write one test to identify gas E.
Classify the following into true solutions and colloidal solutions:
Ink, Salt solution, Starch solution, Blood, Sugar solution
What will happen if a saturated solution is :
- heated
- cooled
9.72 g of potassium chloride dissolves in 30 g of water at 70°C. Calculate the solubility of potassium chloride at that temperature.
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 ?
Name the process which is used in milk dairies to separate cream from milk.
Fill in the following blanks with suitable words :
A mixture of kerosene and petrol can be separated by .....................
How will you separate a mixture of common salt, sulphur powder and sand ?
How will you separate camphor, common salt and iron nails from their mixture ?
Explain how, impure copper sulphate can be purified by crystallisation.
Pure copper sulphate can be obtained from an impure sample by the process of :
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?
Liquids have ______.
Define the term matter.