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Question
Which of the following statements are true for pure substances ?
- pure substances contain only one kind of particles
- pure substances may be compounds or mixtures
- pure substances have the same composition throughout
- pure substances can be exemplified by all elements other than nickel
Options
(i) and (ii)
(i) and (iii)
(iii) and (iv)
(ii) and (iii)
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Solution
(i) and (iii)
A pure substance is made up of only one kind of particles like elements. The composition of pure compounds is also same throughout.
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