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सी.आई.एस.सी.ई.आयसीएसई ICSE Class 7

Write word equation for the following skeletal equation: NaOH+HA2SOA4⟶NaA2SOA4+HA2O

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प्रश्न

Write word equation for the following skeletal equation:

\[\ce{NaOH + H2SO4 -> Na2SO4 + H2O}\]

रासायनिक समीकरणे/रचना
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उत्तर

\[\ce{Sodium hydroxide + Sulphuric acid -> Sodium sulphate + Water}\]

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पाठ 5: Language of Chemistry - Exercise

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सेलिना Concise Chemistry [English] Class 7 ICSE
पाठ 5 Language of Chemistry
Exercise | Q 4.7

संबंधित प्रश्‍न

What do you understand by endothermic reactions?


Zinc oxide reacts with carbon, on heating, to form zinc metal and carbon monoxide. Write a balanced chemical equation for this reaction. Name

  1. oxidising agent, and
  2. reducing agent,

in this reaction.


What is a chemical equation? Why it is necessary to balance it?


Write the balanced chemical equation of the following reaction.

zinc sulphide + oxygen → zinc oxide + sulphur dioxide


\[\ce{MnO2 + 4HCl -> MnCl2 + 2H2O + Cl2}\]

0.02 moles of pure MnO2 is heated strongly with conc. HCl. Calculate the mass of chlorine gas formed.


(a) Give only one suitable chemical test to identify the following gases.

  1. Ammonia
  2. Sulphur dioxide
  3. Hydrogen Chloride
  4. Chlorine
  5. Carbon Dioxide
  6. Oxygen
  7. Hydrogen

(b) Select a basic gas mentioned in Q.1 (a). How is the basic nature suspected?

(c)Select acidic gases from the gases mentioned in Q.1 (a). How is the acidic nature suspected?

(d) State the gas responsible for bleaching action.

(e)Which gas turn blue cobalt chloride paper light pink?

 


Write word equation for the following molecular equation:

AgN03 + HCI → HNO3 + AgCl ↓

Word equation:

State whether AgCl is soluble or insoluble in HN03.


With reference to a chemical equation state which of the statements 1 to 5 pertain to A or B.
A: Information provided by a chemical equation. 
B: Limitations of a chemical equation.

  1. The nature of the individual elements.
  2. The speed of the reaction.
  3. The state of matter in which the substance is present.
  4. The completion of the reaction.
  5. The direction of the reaction.

Fill in the blank with the correct word from the options given below:

A chemical equation is a shorthand form for a _______ change.


Write an Explanation.

Balanced equations


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