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प्रश्न
Write true or false for each statement. Rewrite the false statement correctly.
Matter cannot exist in different states.
विकल्प
True
False
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उत्तर
False.
Matter can exist in different states.
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संबंधित प्रश्न
Define the term matter. What is it composed of?
Fill in the blank
All matter is made up of tiny particles called ______
State two characteristics of matter demonstrated by Brownian motion.
Which of the following substances are elements ?
Water, Salt, Mercury, Iron, Marble, Diamond, Wood, Nitrogen, Air, Graphite, Hydrogen, Oxygen, Sugar, Chlorine
State any two properties for believing that aluminium is a metal.
Define a compound. Give two points of evidence to show that sodium chloride is a compound.
The element which is not common between the compounds called baking soda and soda ash is
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 ?
Which of the following is a sol ?
Shaving cream, Milk, Fog, Soap solution, Hairspray
Fill in the following blank :
Milk is a .................... solution but vinegar is a .................... solution.
Define solute.
Name the different types of solutions. Give one example of each.
Tincture of iodine has antiseptic properties. This solution is made by dissolving :
Define the term matter.
The property which allows the metals to be hammered into their sheets is ______.
What type of matter glass is?
Seema visited a Natural Gas Compressing Unit and found that the gas can be liquefied under specific conditions of temperature and pressure. While sharing her experience with friends she got confused. Help her to identify the correct set of conditions
Which of the following are homogeneous in nature?
(i) ice
(ii) wood
(iii) soil
(iv) air
The most reactive metal is ______.
Solids do not flow.
