Which of the following is not a pure substance? a) Water b) Air c) Diamond d) Gold
Answer: b) Air
1.What is true about homogeneous mixture? (a) Homogeneous mixture is the mixture of two or more than two components. (b) In homogeneous mixture the composition and properties are uniform throughout the mixture (c) both (a) and (b) are tr
Ans: (c)
Which of the following properties does not describe a compound? (a) It is composed of two or more elements (b) It is a pure substance. (c) It cannot be separated into constituents by physical means (d) It is mixed in any proportion by m
Ans: (d)
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