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प्रश्न
Define matter.
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उत्तर
Anything that has mass and occupies space is called matter.
संबंधित प्रश्न
Fill in the blank
Liquids have a definite ______
When a crystal of potassium permanganate is placed in a beaker, its purple colour spreads throughout the water. What does this observation tell us about the nature of potassium permanganate and water?
What are the characteristics of matter?
Explain why, osmosis can be considered to be a special kind of diffusion. Classify the following into
(i) osmosis, and (ii) diffusion :
- swelling up of a raisin on keeping in water
- spreading of virus on sneezing
- earthworm dying on coming in contact with common salt
- shrinking of grapes kept in thick sugar syrup
- preserving of pickles in salt
- spreading of smell of cake being baked in the kitchen
- aquatic animals using oxygen dissolved in water during respiration
Which of the following are ‘pure substances’ ?
Ice, Milk, Iron, Hydrochloric acid, Calcium oxide, Mercury, Brick, Wood, Air
How would you confirm that a colourless liquid given to your is pure water ?
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.
“Is malleable and ductile” best describes :
Which one of the following is not a metalloid ?
A solution contains 5.6 mL of alcohol mixed with 75 mL of water. Calculate the concentration of this solution.
Choose one term from the following which includes the other three :
aerosol, emulsion, colloid, sol
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 ?
Name the process which is used in milk dairies to separate cream from milk.
Which of the following cannot be separated from air by the process of fractional distillation ?
The correct increasing order of the boiling points of liquid oxygen, liquid argon and liquid nitrogen present in liquid air is :
A solid mixture contains four constituents P, Q, R and S. P consists of tiny grains and it is mixed with
cement for plastering the walls. Q is a white solid which is recovered on a large scale from sea water by the
process of evaporation. R is in the form of tiny particles of a material whose corrosion is called rusting. And
S is a white solid which is used in making ordinary dry cells.
- What could P, Q, R and S be ?
- How would you separate a mixture containing P, Q, R and S ?
Matter is made up of ______.
A standard sheet of paper is about ______ of atoms thick
Evaporation does form bubbles.
