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Complete and Balance the Following Reaction: \\Ce{Cuco3 ->Delta\ - Chemistry

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प्रश्न

Complete and balance the following reaction:

\[\ce{CuCO3 ->[\Delta]}\]

एक पंक्ति में उत्तर

उत्तर

\[\ce{CuCO3 ->[\Delta] CuO(s) + CO2(g)}\]

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अध्याय 2: Chemical Changes and Reactions - Exercise 2 (C) [पृष्ठ ३२]

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सेलिना Concise Chemistry [English] Class 9 ICSE
अध्याय 2 Chemical Changes and Reactions
Exercise 2 (C) | Q 10.3 | पृष्ठ ३२

संबंधित प्रश्न

MULTIPLE CHOICE QUESTIONS

Tick the most appropriate answer.

Reduction reaction is the exact opposite of

  1. displacement reaction
  2. decomposition reaction
  3. oxidation reaction
  4. none of these

MULTIPLE CHOICE QUESTIONS

Tick the most appropriate answer.

Reduction is a chemical reaction in which there is

  1. removal of hydrogen
  2. removal of oxygen
  3. addition of oxygen
  4. none of these

FILL IN THE BLANK

In a ............ change, new substances are formed.


TRUE \ FALSE

A precipitation reaction takes place only in a solution.


TRUE \ FALSE

Weak electrolytes dissociate partially in their aqueous or fused state.


How is a strong electrolyte different from a weak electrolyte?


Fill in the blank:
The substances which undergo chemical change are called _______


Fill in the blank:
The substances formed as a result of a chemical reaction are called _______


Out of sodium and sulphur which is a metal? Explain its reaction with the oxygen.


Write the chemical reaction where the following changes are observed.

Physical state is changed


What do you observe when dilute sulphuric acid is added to the following:

Sodium Sulphide


On heating which of the following substances i.e. copper carbonate, zinc carbonate, washing soda, copper sulphate, zinc nitrate, copper nitrate, lead nitrate, ammonium chloride and ammonium dichromate – relate to the reaction given below.

A coloured substance which leaves a black residue and evolves two gases one of which is acidic and coloured and the other neutral and colourless.


State the following reaction represent oxidation or reduction.

\[\ce{H->H+}\]


Which of the following is not an “element + element → compound” type reaction?


A reaction between an acid and a base is called ______.


When lithium metal is placed in hydrochloric acid, _______ gas is evolved.


Classify the following as physical or chemical properties

Most metal oxides form alkalis on interacting with water.


Magnesium + oxygen → magnesium oxide.

2Mg + O2 → 2Mg O


______ is the chemical name of rust.


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