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What Do You Observe When Dilute Sulphuric Acid is Added to Zinc Granules - Chemistry

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प्रश्न

What do you observe when dilute sulphuric acid is added to Zinc granules.

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उत्तर

When Zn is reacted with dilute sulphuric acid, zinc chloride is formed and hydrogen gas is liberated. This reaction is exothermic and hence heat is evolved in the reaction.

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Application of Activity Series in the Preparation of Hydrogen
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अध्याय 9: Practical Work - Exercise 9 (C) [पृष्ठ १५३]

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सेलिना Concise Chemistry [English] Class 9 ICSE
अध्याय 9 Practical Work
Exercise 9 (C) | Q 1.3 | पृष्ठ १५३

संबंधित प्रश्न

Give an equation to express the reaction between:

Calcium and water 


A small piece of calcium metal is put into a small trough containing water. There is effervescence and white turbidity is formed.

Name the gas formed in the reaction. How would you test the gas?


A small piece of calcium metal is put into a small trough containing water. There is effervescence and white turbidity is formed.

Write an equation for the reaction.


Thin strips of magnesium, copper, and iron are taken.

Arrange these metals in descending order of reactivity. 


Based on the reactions of water on metals, arrange the following metals in increasing order of reactivity: iron, sodium, magnesium, zinc, calcium


When hydrogen is passed over a black solid compound A, the products are a 'colorless liquid' and a 'reddish-brown metal B'.

Substance B is divided into two parts each placed in separate test tubes.

Dilute HCl is added to one part of substance B and dilute HNO3 to the other.

  1. Name the substances A and B.
  2. Give two tests for the colourless liquid formed in the experiment.
  3. What happens to substance A when it reacts with hydrogen? Give reasons for your answer.
  4. Write an equation for the reaction between hydrogen and substance A.
  5. Is there any reaction between substance B and dilute hydrochloric acid? Give reasons for your answer.

Select the odd one out and justify your answer.

SO2, H2S, NH3, and CO3


Which of the following metals does not give hydrogen with acids?


Using dilute sulphuric acid how would you differentiate between:

Sodium sulphide and sodium carbonate.

How would you identify the gaseous products evolved.


‘Magnesium reacts with very dilute nitric acid at low temperatures liberating hydrogen.’ Give reasons.


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