Online Chemistry test series questions answers for NEET, IITJEE, Medical preparation | Hydrogen and its Compounds

Chemistry solved Test Series, MCQ practice questions for preparation of NEET, IIT Joint Entrance Examinations, JEE Main and Advanced, Medical and Engineering Entrance Exams, MBBS admission tests, NEST and other competitions.

Hydrogen and its Compounds (Topics / Syllabus):

Position of hydrogen in the periodic table; Discovery, Occurrence, Preparation, Properties and Industrial Applications of Hydrogen; Dihydrogen - Isotopes of hydrogen, Properties, Preparation and Uses of dihydrogen; Heavy Hydrogen or Deuterium; Tritium; Hydrides and their classification; Water - structure of water and ice, properties of water, hard and soft water, Hydrogen Peroxide; Heavy water.

Chemistry Solutions and Guide : Hydrogen and its Compounds

MCQ Test Series – Practice Questions - Set 3 (Q. No. 21-30)

Question 21: In which property listed below hydrogen does not resemble alkali metals?

a. Nature of oxide

b. Reducing nature

c. Tendency to form cation

d. Presence of one electron in valence shell

Question 22: Heavy water (D₂O) freezes at:

a. 0⁰C

b. 3.8⁰C

c. -3.8⁰C

d. 38⁰C

Question 23: H₂ gas is liberated when H₂O₂ reacts with –

a. Acidified KMnO₄

b. O₃

c. Acidified K₂Cr₂O₇

d. HCHO

Question 24: Hydrogen gas behaves as an oxidising agent in its reaction with:

a. Chlorine

b. Potassium

c. Nitrogen

d. Sulphur

Question 25: Pure water can be obtained from sea water by:

a. Centrifugation

b. Plasmolysis

c. Reverse osmosis

d. Sedimentation

Question 26: Volume strength of 500 ml solution containing 3.4 g of H₂O₂ is –

a. 11.2

b. 6.8

c. 1.12

d. 2.24

Question 27: In basic medium, H₂O₂ acts as an oxidising agent in its reaction with:

a. Cr₂(SO₄)₃

b. Ag₂O

c. K₃[Fe(CN)₆]

d. K₄[Fe(CN)₆]

Question 28:Which isotope of hydrogen is radioactive in nature?

a. Protium only

b. Deuterium only

c. Deuterium and tritium

d. Tritium only

Question 29: Among the following, identify the compound which cannot act as both oxidising and reducing agents?

a. H₂O₂

b. H₂

c. SO₂

d. Cl₂

Question 30: Hydrogen combines with other elements by:

a. Losing an electron

b. Gaining an electron

c. Sharing an electron

d. a, b, c all are correct

India Study Solution - Chemistry Practice Questions

hydrogen and its compounds

Solutions of Chemistry MCQ Test Series MCQ Practice Questions – Set 3 (Q.No. 21 – 30)

https://www.indiastudysolution.com

Answer 21: (a).

Answer 22: (b) Hint: Freezing point of heavy water is at 3.8⁰C.

Answer 23: (d).

Answer 24: (b) Hint: An oxidising agent is a species which accepts an electron or electrons. Hydrogen accepts an electron from potassium when it forms KH.

H₂ + 2K → 2KH (K⁺H^-).

Answer 25: (c). Answer 26: (d).

Answer 27: (a) Hint: In basic medium, H₂O₂ oxidises Cr₂(SO₄)₃

2Cr³⁺ + 10H^- + 3H₂O₂ → 2CrO^2-₄ + 8H₂O

Cr – Oxidation No. = + 3 Cr – Oxidation No. = + 6

Answer 28: (d). Answer 29: (b). Answer 30: (d).

Hydrogen and its Compounds - More Questions Answers

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