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Standard X
Chemistry
Question

Mark the incorrect statement.
  1. Metals displace hydrogen from dilute acids
  2. Copper displace hydrogen from dilute acids
  3. Intensity of reaction of a metal with water depends on its chemical reactivity
  4. Metal oxides are basic in nature

A
Copper displace hydrogen from dilute acids
B
Metals displace hydrogen from dilute acids
C
Metal oxides are basic in nature
D
Intensity of reaction of a metal with water depends on its chemical reactivity
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Solution
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Metal oxides are basic in nature. Metals like copper and silver which are less inactive than hydrogen, do not displace hydrogen from dilute acids.

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Consider the given statements and choose the correct option.

Statement-I : Metals that are placed above hydrogen can displace hydrogen from water and dilute acids.

Statement–II : Oxides of metals like K, Na and Ca cannot be reduced by H2,C or CO.
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Metals above hydrogen in the activity series can displace hydrogen from dilute acids.
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