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प्रश्न
Fill in the following blanks with suitable words :
If a mixture contains iron filings as one of the constituents, it can be separated by using a .......................
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उत्तर
If a mixture contains iron fillings as one of the constituents, it can be separated by using a magnet.
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संबंधित प्रश्न
The inter-molecular force is maximum in
State two characteristics of matter demonstrated by Brownian motion.
What name is given to those elements which are neither good conductors of electricity like copper nor insulators like sulphur ?
What are pure substances ? Give two examples of pure substances.
Name two solid, two liquid and two gaseous elements at the room temperature.
You are given two liquids, one a solution and the other a compound. How will you distinguish the solution from the compound ?
What are the three general classes of matter ? Give one example of each type.
What happens when the temperature of a saturated sugar solution is increased ?
Which of the following contains less solute at a given temperature and pressure ? Unsaturated solution or Saturated solution.
Fill in the following blank :
Milk is a .................... solution but vinegar is a .................... solution.
Define solvent.
Which of the following do not exhibit Tyndall effect ?
Starch solution, Sugar solution, Ink, Salt solution, Copper sulphate solution, Ammonium chloride solution, Fog, Smoke, Car exhausts.
What is the effect of temperature on the solubility of solids in liquids ?
Tincture of iodine has antiseptic properties. This solution is made by dissolving :
Name the process by which common salt is obtained from sea-water.
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.
Name the metals that are used in jewellery.
Diffentiate between absorption and adsorption.
A teabag placed in a cup of hot water will diffuse into the water.
Write a scientific reason.
Lemon sherbat has a sweet, sour and salty taste and it can be poured in a glass.
