Question

3. The molecules of which of the following substances will contain atoms of more than one kind?
(a) Hydrogen
(b) Nitrogen
(c) Oxygen
(d) Water
4. Which of the following is an alloy?
(b) Gold
(d) Copper
(c) Stainless steel
(d) Iron
5. Which of the following methods would you use for separating iron from sulphur particles?
(a) Magnetic separation
(b) Filtration
(c) Sublimation
(d) Distillation
6. Which of the following methods can be used to separate mustard oil and water from a mixture of
the two
(a) Magnetic separation
(b) Decantation
(c) Sublimation
(d) Filtration
​

Answer 1

Answer:

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Explanation:

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Answer 2

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• (D) Option - Water
• (C) Option - Stainless Steel
• (A) Option - Magnetic Separation
• (I don't know)

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