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9th ICSE
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What do you observe when hydrogen gas is passed through soap solution?

Important Questions on Study of the First Elements-Hydrogen

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9th ICSE
IMPORTANT
Concise Chemistry Class 9>Chapter 6 - Study of the First Elements-Hydrogen>EXERCISE 6(C)>Q 16
Under what condition hydrogen be made to combine with nitrogen? Name the product and write the equation.
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9th ICSE
IMPORTANT
Concise Chemistry Class 9>Chapter 6 - Study of the First Elements-Hydrogen>EXERCISE 6(C)>Q 16
Under what condition hydrogen be made to combine with chlorine? Name the product and write the equation.
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9th ICSE
IMPORTANT
Concise Chemistry Class 9>Chapter 6 - Study of the First Elements-Hydrogen>EXERCISE 6(C)>Q 16
Under what condition hydrogen be made to combine with sulphur? Name the product and write the equation.
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9th ICSE
IMPORTANT
Concise Chemistry Class 9>Chapter 6 - Study of the First Elements-Hydrogen>EXERCISE 6(C)>Q 16
Under what condition hydrogen be made to combine with oxygen? Name the product and write the equation.
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9th ICSE
IMPORTANT
Concise Chemistry Class 9>Chapter 6 - Study of the First Elements-Hydrogen>EXERCISE 6(C)>Q 17
When hydrogen is passed over a black solid compound A, the products are a colourless 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 substance A and B.
MEDIUM
9th ICSE
IMPORTANT
Concise Chemistry Class 9>Chapter 6 - Study of the First Elements-Hydrogen>EXERCISE 6(C)>Q 17
When hydrogen is passed over a black solid compound A, the products are a colourless 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. Give two test for the colourless liquid formed in the experiment.
MEDIUM
9th ICSE
IMPORTANT
Concise Chemistry Class 9>Chapter 6 - Study of the First Elements-Hydrogen>EXERCISE 6(C)>Q 17
When hydrogen is passed over a black solid compound A, the products are a colourless 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. What happens to the substance A when it reacts with hydrogen? Give reasons for your answer.
MEDIUM
9th ICSE
IMPORTANT
Concise Chemistry Class 9>Chapter 6 - Study of the First Elements-Hydrogen>EXERCISE 6(C)>Q 17
When hydrogen is passed over a black solid compound A, the products are a colourless 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. Write an equation for the reaction between hydrogen and substance A.