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When hydrogen is passed over a black sol...

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 `HNO_3` to the other.
Give two tests for the colourless liquid formed in the experiment. What does it signifies ?

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Blue and red litmus paper, when dipped in the colourless liquid, do not change colour. This confirms the liquid formed is neutral and is water. It changes white anhydrous copper sulphate to blue salt.
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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 substances A and B.

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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 HNO_3 to the other. Is there any reaction between substance B and dilute hydrochloric acid ? Give reasons for your answer.

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ICSE-STUDY OF THE FIRST ELEMENT - HYDROGEN-TOPIC 2 Properties of Hydrogen, Oxidation nd Reduction (5 MARKS QUESTIONS)
  1. Name : an oxidizing agent that does not contain oxygen.

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  2. Name a substance which oxidises conc. hydrochloric acid to chlorine.

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  3. Name a substance that will reduce aqueous Iron (III) ions to Iron (II...

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  4. Name : a liquid that is an oxidizing as well as a reducing agent.

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  5. Give one example of each A gaseous substance which acts as an oxidis...

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  6. Why are the following metals not used in the lab. Preparation of hydro...

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  7. Why are the following metals not used in the lab. Preparation of hydro...

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  8. Why are the following metals not used in the lab. Preparation of hydro...

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  9. Why are the following metals not used in the lab. Preparation of hydro...

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  10. How did the name 'hydrogen' originate?

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  11. What happens when following elements are made to react with hydrogen. ...

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  12. What happens when following elements are made to react with hydrogen. ...

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  13. What happens when following elements are made to react with hydrogen. ...

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  14. What happens when following elements are made to react with hydrogen. ...

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  15. State the product formed and write the balanced equation to show the r...

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  16. When hydrogen is passed over a black solid compound A, the products ar...

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  17. When hydrogen is passed over a black solid compound A, the products a...

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  18. When hydrogen is passed over a black solid compound A, the products ar...

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  19. When hydrogen is passed over a black solid compound A, the products ar...

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  20. When hydrogen is passed over a black solid compound A, the products a...

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