Question:

Water can be obtained from various sources. Are all these samples of water chemically identical? [Pg. No. 162]

Answer: Verified

Yes, pure water from all sources is chemically identical because it is made up of the same molecules, H₂O. However, natural water samples may contain different dissolved substances such as salts, minerals, gases, or impurities, so their composition may vary.

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More NCERT Questions

Metal M, with two electrons in its valence shell (M shell), reacts with oxygen to form a compound that is slightly soluble in water. Predict its: (A) formula (B) type of bond (C) electrical conductivi Find the molecular mass of nitric acid (HNO3). Atomic mass — H = 1 u; N = 14 u; O = 16 u. [Pg. No. 179] Find the molecular mass of methane (CH₄). Atomic mass — C = 12 u; H = 1 u. [Pg. No. 179] An element X has six electrons in its outer shell and forms a diatomic molecule. (A) Why would that be so? (B) What kind of bond would it form? (C) Draw the structure of the molecule it would form. (D

Water can be obtained from various sources. Are all these samples of water chemically identical? [Pg. No. 162]

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