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Elements and Compounds

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Multiple Choice

Consider the following and choose which among them cannot be split into simpler substances by a chemical means?
i. Chlorine
ii. Water
iii. Oxygen
iv. Silica
v. Sand
vi. Hydrogen
vii. Sodium
viii. Zinc

  1. i, ii, iii, vi, viii
  2. i, iii, vi, vii, viii
  3. i, ii, v, vii
  4. ii, iv, v