Which of the following best describes a homogeneous mixture?
A mixture with uniform composition throughout
A homogeneous mixture is one in which the components are mixed so evenly that the composition and properties are the same in every part of it, and the components cannot be seen separately.
Examples are a solution of salt or sugar in water, air (a mixture of gases) and alloys such as brass. Any sample taken from any part of such a mixture has the same proportion of components.
Visible separate layers, as in oil and water, show a heterogeneous mixture. Mixtures whose particles can be held back by a filter, or whose particles settle at the bottom, such as sand in water or muddy water, are suspensions, which are also heterogeneous.
Hence, A mixture with uniform composition throughout.
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Important Questions from Basic Concepts of Chemistry
Which of the following pair is correct?
I. Isotopes – different mass numbers
II. Isobars – different atomic numbers
Which of the following is a zone of a flame?
I. Dark
II. Luminous
III. Non-Luminous
If formula of sodium salt of an anion X is \(Na_2X\) , then the formula of its aluminium salt would be
Which of the following set contains same number of molecules?
A. 1 gram O 2, 2 grams SO 2
B. 1 gram CO 2, 1 gram N 2O
C. 1 gram O 2, 1 gram O 3
The volume of CO 2liberated at STP when 10 gm of 90% pure limestone strongly heated is
