can any one give me the possible multiple choice questions of chemistry IS MATTER AROUND US PURE?
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Answers
Answer:
Air shows the property of. (a) N2 ...
The components of water can be separated by. (a) Physical methods. ...
Mixture can be. (a) homogeneous. ...
Brass is a. (a) Compound. ...
In sugar solution, ...
Brass is a solution of molten copper in. ...
24 carat of diamond is equal to. ...
1 carat of diamond is equal to....
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Answer:
▪︎What is the name of the metal which exists in liquid state at room temperature?
(a) Sodium
(b) Potassium
(c) Mercury
Answer: (c) Mercury
▪︎When the liquid is spun rapidly, the denser particles are forced to the bottom and the lighter particles stay at the top. This principle is used in:
(a) Centrifugation
(b) Fractional distillation
(c) Evaporation
(d) Tunneling
Answer: (a) Centrifugation
▪︎What is the name of the metal which exists in liquid state at room temperature?
(a) Mercury
(b) Bromine
(c) Sodium
(d) Potassium
Answer: (b) Bromine
▪︎. Which of the following elements is not a metalloid?
(a) Boron
(b) Silicon
(c) Germanium
(d) Tungsten
Answer: (d) Tungsten
▪︎If we put camphor in an open container, its amount keeps on decreasing due to the phenomenon of
(a) Evaporation
(b) Precipitation
(c) Condensation
(d) Sublimation
Answer: (d) Sublimation
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