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प्रश्न
Fill in the following blank :
Milk is a .................... solution but vinegar is a .................... solution.
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उत्तर
Milk is a colloidal solution but vinegar is a true solution.
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संबंधित प्रश्न
Match the following
| Column A | Column B | ||
| (a) | Molecules | (i) | Water boils |
| (b) | 100° C | (ii) | Evaporation |
| (c) | 0° C | (iii) | Changes from solid to gas |
| (d) | At all temperatures | (iv) | Matter |
| (e) | Camphor | (v) | Water freezes |
What name is given to those elements which are neither good conductors of electricity like copper nor insulators like sulphur ?
Classify the following as elements or compounds :
Iron, Iron sulphide, Sulphur, Chalk, Washing soda, Sodium, Carbon, Urea
What are the three groups into which all the elements can be divided ? Name two elements belonging to each group.
State one property in which a solution of sugar in water resembles a mixture of sugar and sand, and one property in which it differs from it.
Name a metal which has a low melting point.
Name a metal which is yellow in colour.
Draw a flow-chart for the schematic representation of different types of matter.
Which of the following are compounds ?
- CO
- No
- NO
- Co
“Is malleable and ductile” best describes :
Which of the following statements are true for pure substances ?
- pure substances contain only one kind of particles
- pure substances may be compounds or mixtures
- pure substances have the same composition throughout
- pure substances can be exemplified by all elements other than nickel
Define Aerosol Give one example.
What is a colloid ? Give two examples of colloids (or colloidal solutions)
Name the source from which nitrogen and oxygen are obtained on a large scale.
Name the process which can be used to purify an impure sample of copper sulphate.
Write a method to separate a mixture of sand and potash alum.
What is chromatography ? State its two applications.
What's the solution?
We need to make a sherbet quickly for some guests. But we only have sugar candy in the house.
Rusting of an article made up of iron is called
The phenomenon of Evaporation takes place at the ______ of a liquid.
