Study of First Element Hydrogen Exe-6D MCQs Chemistry Class-9 ICSE Selina Publishers

Study of First Element Hydrogen Exe-6D MCQs Chemistry Class-9 ICSE Selina Publishers Solutions Chapter-6. Step By Step ICSE Selina Concise Solutions of Chapter-6 Study of First Element Hydrogen with All Exercise including MCQs, Very Short Answer Type, Short Answer Type, Long Answer Type, Numerical and Structured/Application Questions Solved . Visit official Website CISCE for detail information about ICSE Board Class-9.

Study of First Element Hydrogen Exe-6D MCQs Chemistry Class-9 ICSE Concise Selina Publishers

Board ICSE
Publications Selina Publication
Subject Chemistry
Class 9th
Chapter-6 Study of First Element Hydrogen
Book Name Concise
Topics Solution of Exercise – 6D MCQs Answer Type
Academic Session 2023-2024

D. Exercise – 6D MCQs Answer Type

Study of First Element Hydrogen Class-9 Chemistry Concise Solutions  

Page-118

(Choose the correct answer from the option given below).

1. Helium is preferred to hydrogen for filling balloons because it is:

(i) lighter than air
(ii) almost as light as hydrogen
(iii) non-combustible
(iv) inflammable

Answer:

(iii) non-combustible

2. Upon reacting with water, an active metal produces:

(i) oxygen
(ii) nitric acid
(iii) a base
(iv) none of these.

Answer:

(iii) a base

3. A metal oxide that is reduced by hydrogen is:

(i) Al2O3
(ii) CuO
(iii) CaO
(iv) Na2O

Answer:

(ii) CuO

4. Which of the following statements about hydrogen is incorrect ?

(i) It is an inflammable gas
(ii) It is the lightest gas.
(iii) It is not easily liquefied.
(iv) It is a strong oxidizing agent.

Answer:

(iv) It is a strong oxidizing agent.

5. For the reaction PbO + H2 ⟶ Pb + H2O, which of the following statements is wrong?

(i) H2 is the reducing agent.
(ii) PbO is the oxidizing agent.
(iii) PbO is oxidized to Pb
(ic) H2 is oxidized to H2O.

Answer:

(iii) PbO is oxidized to Pb

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

(i) Fe
(ii) Zn
(iii) Mg
(iv) Pb

Answer:

(ii) Zn

7. Which of the following metals does not give hydrogen with acids?

(i) Iron
(ii) Copper
(iii) Magnesium
(iv) Zinc

Answer:

(ii) Copper

—  : End of Study of First Element Hydrogen Exe-6D MCQs Answer Class-9 ICSE Chemistry Solutions :–

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