Advertisements
Advertisements
प्रश्न
Define solute.
Advertisements
उत्तर
Solute is a substance, which is dissolved in a liquid to prepare a solution.
Examples: Sugar, salt etc.
APPEARS IN
संबंधित प्रश्न
Solids have definite shape and definite volume.
Explain why steel is used to make railway lines.
Name one solid, one liquid and one gaseous non-metal.
A, B and C are all liquids. Liquid A has a comparatively low boiling point. On heating, liquid A vaporises completely without leaving behind any residue. Liquid A is being used increasingly as a fuel in motor vehicles either alone or by mixing with petrol. Liquid B has a very high boiling point. It also vaporises completely on heating, without leaving any residue. Liquid B is a conductor of electricity and used in making thermometers. Liquid C has a moderate boiling point. On heating, liquid C vaporises leaving behind a white solid D which is used in cooking vegetables. The condensation of vapours from C give a liquid E which turns anhydrous CuSO4 to blue.
(a) Which liquid could be an element ? Name this element.
(b) Which liquid could be a mixture ? Name this mixture.
(c) Which liquid could be a compound ? Name this compound.
(d) What could the solid D be ?
(e) What do you think is liquid E ?
In what respects does a true solution differ from a colloidal solution ?
You have been given a suspension and a solution. How could you tell the difference between them by their appearance ?
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.
What is a colloid ? Give two examples of colloids (or colloidal solutions)
Differentiate between a saturated and an unsaturated solution. How will you test whether a given solution is saturated or not ?
Which of the following is not an emulsion ?
You are given a mixture of iodine in alcohol called tincture iodine. Which method will you use to recover both, iodine as well as alcohol, from this mixture ?
Write a few lines on the blackboard with a chalk. Now observe the chalk. What changes do you see in the chalk?
Match the physical quantities given in column A to their S I units given in column B:
| (A) | (B) | ||
| (a) | Pressure | (i) | cubic metre |
| (b) | Temperature | (ii) | kilogram |
| (c) | Density | (iii) | pascal |
| (d) | Mass | (iv) | kelvin |
| (e) | Volume | (v) | kilogram per cubic metre |
Which statement is not correct for a mixture
A teabag placed in a cup of hot water will diffuse into the water.
______ is used for industrial refrigeration and transporting frozen food.
Define the term matter.
Define the term matter.
