endothermic reactions taking in heat

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Thermal decomposition does not occur in

Thermal decomposition does not occur in
  • A. carbonates
  • B. hydroxides
  • C. sulphates
  • D. nitrates
  • Correct Answer: Option C

Endothermic changes are indicated through

Endothermic changes are indicated through
  • A. breaking of chemical bonds
  • B. making of chemical bond
  • C. burning of carbon
  • D. all of these
  • Correct Answer: Option A

On burning, hydrogen is changed into

On burning, hydrogen is changed into
  • A. hydroxides
  • B. water vapors
  • C. dilute acids
  • D. hydrogen gas
  • Correct Answer: Option B

Upon heating, sodium nitrate NaNO3(s) gets converted into

Upon heating, sodium nitrate NaNO3(s) gets converted into
  • A. sodium oxide
  • B. nitric acid
  • C. sodium hydrogen oxide
  • D. None of Above
  • Correct Answer: Option D

Conversion of Copper Hydroxide (Cu(OH)2) into Copper Oxide (CuO) and water (H2O) is an example of

Conversion of Copper Hydroxide (Cu(OH)2) into Copper Oxide (CuO) and water (H2O) is an example of
  • A. combustion
  • B. Thermal decomposition
  • C. Neutralization
  • D. Respiration
  • Correct Answer: Option B