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    "Metals are usually not found as nitrates in their
    ores".
    Out of the following two (a and b) reasons which
    is/are true for the above observation ?
    (a) Metal nitrates are highly unstable.
    (b) Metal nitrates are highly soluble in water.

  • a and b are false
  • a is false but b is true
  • a is true but b is false
  • a and b are true
  • Explanation:

    Metal nitrates are stable like NaNO3 and KNO3 and
    highly soluble in water.