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Which metal is preferred for collecting hydrogen from: Hot water - Chemistry

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प्रश्न

Which metal is preferred for collecting hydrogen from:
Write the balanced equation

Hot water

एक शब्द/वाक्यांश उत्तर
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उत्तर

Hot water: Magnesium

Mg(s) + 2H2O(l) → Mg(OH) 2(s) + H2(g) 

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Application of Activity Series in the Preparation of Hydrogen
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 6: Study of the First Element - Hydrogen - Exercise 6 (C) [पृष्ठ १०८]

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सेलिना Concise Chemistry [English] Class 9 ICSE
अध्याय 6 Study of the First Element - Hydrogen
Exercise 6 (C) | Q 3.2 | पृष्ठ १०८

संबंधित प्रश्न

From the knowledge of activity series, name a metal which shows the following properties:

It displaces hydrogen from hot water.


From the knowledge of activity series, name a metal which shows the following properties:

It forms a base which is insoluble in water. 


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.


Choose the correct option:

Hydrogen is evolved by the action of cold dil. HNO3 on


Name two alkalies that can displace hydrogen. Give balanced equations for the same. Why are the metals you have used considered to have a unique nature?


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.

Which metal gives hydrogen with all of the following: water, acids, alkalis?


Choose terms from the options given in brackets to complete this sentence.

Sodium ………………. reacts smoothly with cold water.

(metal, amalgam, in the molten state)


Give a chemical test to distinguish between the following gases:

Hydrogen chloride and hydrogen sulphide


State why hydrogen is not prepared in the laboratory by the action of lead with dilute hydrochloric acid.


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