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सी.आई.एस.सी.ई.आयसीएसई ICSE Class 8

Underline the Incorrectly Balanced Compound Equation and Rewrite the Correct Equation. \\Ce{4p + 4o2->2p2o5}\

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प्रश्न

Underline the incorrectly balanced compound equation and rewrite the correct equation.

\[\ce{Fe2O3 + 2H2->2Fe + 3H2O}\]

एका वाक्यात उत्तर
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उत्तर

Correct equation is:
\[\ce{Fe2O3 + 3H2->2Fe + 3H2O}\]

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पाठ 5: Language of Chemistry - Objective type questions

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विराफ जे. दलाल Simplified Middle School Chemistry [English] Class 8 ICSE
पाठ 5 Language of Chemistry
Objective type questions | Q 4.03

संबंधित प्रश्‍न

Balance the following equation:

CO + O2 → CO2


Write balanced chemical equations for the following word equation:

Sodium + chlorine → Sodium chloride


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`NaNO_3→ NaNO_2  +  O_2 `       Name of product (s)


Balance the following equation. Also name the products formed.

`H_2 + CI_2     →   HCI`


Write a balanced molecular equation for the following word equation:

\[\ce{Calcium + oxygen->Calcium oxide}\]


When ferrous sulphate is heated strongly it undergoes decomposition to form ferric oxide as a main product accompanied by a change in colour from:


Why is it important to balance a skeletal chemical equation?


Barium chloride on reacting with ammonium sulphate forms barium sulphate and ammonium chloride. Which of the following correctly represents the type of the reaction involved?

  1. Displacement reaction
  2. Precipitation reaction
  3. Combination reaction
  4. Double displacement reaction

Which one of the following processes involve chemical reactions?


Write the balanced chemical equations for the following reactions and identify the type of reaction in each case.

  1. Iron (III) oxide reacts with aluminum and gives molten iron and aluminum oxide.
  2. Magnesium ribbon is burnt in an atmosphere of nitrogen gas to form solid magnesium nitride.
  3. Chlorine gas is passed in an aqueous potassium iodide solution to form potassium chloride solution and solid iodine.
  4. Ethanol is burnt in air to form carbon dioxide, water and releases heat. 

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