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प्रश्न
From the knowledge of activity series, name a metal which shows the following properties
It reacts readily with cold water
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उत्तर
Sodium
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संबंधित प्रश्न
Write a balanced equation for the following:
Iron reacts with dil. HCl
Hydrogen can be prepared with the metal zinc by using: alkali
Give an equation.
Give an equation to express the reaction between:
Calcium and water
Give reason for the following:
Potassium and sodium are not used for reaction with dilute hydrochloric acid or dilute sulphuric acid in the laboratory preparation of hydrogen.
Metal in the powdered form reacts very slowly with boiling water, but it decomposes in steam. Name the metal.
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.
- Name the substances A and B.
- Give two tests for the colourless liquid formed in the experiment.
- What happens to substance A when it reacts with hydrogen? Give reasons for your answer.
- Write an equation for the reaction between hydrogen and substance A.
- 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?
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.
State why hydrogen is not prepared in the laboratory by the action of lead with dilute hydrochloric acid.
