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Study of the First Element - Hydrogen CHEMISTRY - Study of the First Element - Hydrogen

ICSE - STD 9 - CHEMISTRY (ICSE - English Medium). 153 questions in this chapter.

Question types

Study of the First Element - Hydrogen question types

153 questions across 6 question groups — pick any mix to generate a CHEMISTRY paper with step-by-step answer keys.

153
Questions
6
Question groups
5
Question types
Sample Questions

Study of the First Element - Hydrogen questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 1MCQ1 Mark
Which of the following metals does not give hydrogen with acids?
  • A
    Iron
  • ✓
    Copper
  • C
    Lead
  • D
    Zinc

Answer: B.

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Q 2MCQ1 Mark
Which metal gives hydrogen with all of the following: water, acids, alkalis?
  • A
    $Fe$
  • ✓
    $Zn$
  • C
    $Mg$
  • D
    $Pb$

Answer: B.

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Q 3MCQ1 Mark
For the reaction $PbO + H _2 \rightarrow Pb + H _2 O$, which of the following statements is wrong?
  • A
    $H _2$ is the reducing agent.
  • B
    PbO is theoxidizing agent.
  • ✓
    PbO is oxidized to Pb .
  • D
    $H _2$ is oxidized to $H _2 O$.

Answer: C.

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Q 4MCQ1 Mark
Which of the following statements about hydrogen is incorrect?
  • A
    It is an inflammable gas
  • B
    It is the lightest gas.
  • C
    It is not easily liquefied
  • ✓
    It is a strong oxidizing agent.

Answer: D.

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Q 16[3 Mark Question Answer]3 Marks
Thin strips of magnesium, copper, and iron are taken.
Write down what happens when these metals are treated as follows:
    1. Heated in presence of air
    2. Heated with dil.HCl
    3. Added to an aqueous solution of zinc sulphate.
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Q 21[5 Mark Question Answer]5 Marks
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 $HNO_3$ 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.
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Q 23Fill in the blanks.1 Mark
A metal …………….. hydrogen in the activity series gives hydrogen with …………… acid or …………… acid.
(above, below, dilute hydrochloric, concentrated hydrochloric, dilute sulphuric).
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