CBSE Class 11 Chemistry Chapter 9 Hydrogen MCQs
These CBSE Class 11 Chemistry Chapter 9 Hydrogen MCQs are prepared by our Chemistry Expert. By practicing following MCQs, students will be able to quickly revise all the concepts of the CBSE Class 11 Chemistry Chapter 9 Hydrogen MCQs. Additionally, CBSE Class 11 Chemistry Chapter 9 Hydrogen MCQs will be helpful for JEE And NEET Aspirants.
Refer to our Chemistry 11 MCQs for scoring Excellent Marks in your Exams.
CBSE Class 11 Chemistry Chapter 9 Hydrogen MCQs (Set A)
1. The percentage of para-hydrogen in ordinary hydrogen increases when:
(A) Temperature is lowered
(B) Temperature is increased
(C) Pressure is increased and temperature is decreased
(D) None of the above
Answer: Temperature is lowered.
2. Radioactive isotope of hydrogen is
(A) Tritium
(B) Deuterium
(C) Para hydrogen
(D) Ortho hydrogen
Answer: Tritium.
3. TiH1.73 is an example of∶
(A) Ionic hydride
(B) Covalent hydride
(C) Metallic hydride
(D) Polymeric hydride
Answer: Metallic hydride.
4. Which is not a water softener?
(A) Calgon
(B) Permutit
(C) Na2CO3
(D) Na2SO4
Answer: Na2SO4.
5.The boiling point of water is high because
(A) Water molecule is linear
(B) Water molecule is not linear
(C) Water molecules possess covalent bond between H and O
(D) Water molecules associate due to H-bonding
Answer: Water molecules associate due to H-bonding.
6. The volume of oxygen liberated from 15mL of 20 volume H2O2 is
(A) 250mL
(B) 300mL
(C) 150mL
(D) 200mL
Answer: 300mL.
7. Which will produce hard water?
(A) Saturation of water with CaSO4
(B) Addition of Na2SO4 to water
(C) Saturation of water with CaCO3
(D) Saturation of water with MgCO3
Answer: Saturation of water with CaSO4.
CBSE Class 11 Chemistry Chapter 9 Hydrogen MCQs (Set B)
1. The hybridization of the orbitals of oxygen H2O2 is:
(A) 𝑠𝑝3𝑑
(B) 𝑠𝑝
(C) 𝑠𝑝2
(D) 𝑠𝑝3
Answer: 𝑠𝑝3.
2. Permutit is:
(A) Hydrated sodium aluminum silicate
(B) Sodium Hexa meta-phosphate
(C) Sodium silicate
(D) Sodium meta-aluminate
Answer: Hydrated sodium aluminum silicate.
3. The number of radioactive isotopes of hydrogen is:
(A) 1
(B) 2
(C) 3
(D) None of these
Answer: 1.
4. The oxidation number of oxygen in hydrogen peroxide is
(A) +1
(B) –1
(C) +2
(D) –2.
Answer: -1.
5. The normality of 30 volume H2O2 is
(A) 2.678 N
(B) 5.336 N
(C) 8.034 N
(D) 6 N
Answer: 5.336 N.
6. The O—O bond length in H2O2 is:
(A) 1.54 Å
(B) 1.48 Å
(C) 1.34 Å
(D) 1.01 Å
Answer: 1.48 Å.
7. The strength in volumes of a solution containing 30.36g/L of H2O2 is
(A) 10 volume
(B) 20 volume
(C) 5 volume
(D) None of these
Answer: 10 volume.
CBSE Class 11 Chemistry Chapter 9 Hydrogen MCQs (Set C)
1. Hydrogen peroxide is manufactured by the auto-oxidation of:
(A) 2-ethylanthraquinol
(B) Anthraquinone
(C) Naphthalene
(D) Anthracene
Answer: 2-ethylanthraquinol.
2. Ordinary hydrogen is a mixture at:
(A) 75% ortho H2 + 25% para H2
(B) 25% ortho H2 + 75% para H2
(C) 50% ortho H2 + 50% para H2
(D) 99% para H2 + 1% ortho H2.
Answer: 75% ortho H2 + 25% para H2.
3. The bleaching properties of H2O2 are due to its:
(A) Reducing properties
(B) Oxidizing properties
(C) Unstable nature
(D) Acidic nature
Answer: Oxidizing properties.
4. The colour of hydrogen is
(A) Yellow
(B) Orange
(C) Black
(D) Colourless
Answer: Colourless.
5. Zeolites are extensively used in:
(A) Softening of water and catalyst
(B) Preparing heavy water
(C) Incovering
(D)none
Answer: Softening of water and catalyst.
6. Permanent hardness of water can be removed by adding Calgon (NaPO3)𝑛. This is an example of:
(A) Adsorption Condition
(B) Exchange of ion
(C) Precipitation
(D) None of these
Answer: Exchange of ion.
7. 1000 g aqueous solution of CaCO3 contains 10 g of calcium carbonate. Hardness of the solution is:
(A) 10 ppm
(B) 100 ppm
(C) 1000 ppm
(D) 10000 ppm
Answer: 10000 ppm.
CBSE Class 11 Chemistry Chapter 9 Hydrogen MCQs (Set D)
1. Deionised water is obtained by passing hard water through
(A) Anion exchanger
(B) Zeolite
(C) Cation exchanger
(D) Both anion and cation exchanger
Answer: Both anion and cation exchanger
2. What is formed when calcium carbide reacts with heavy water?
(A) C2D2
(B) CaD2
(C) Ca2D2O
(D) CD2
Answer: C2D2.
3. The maximum possible number of hydrogen bonds a water molecule can form is:
(A) 1
(B) 2
(C) 3
(D) 4
Answer: 4.
4. The reactions, H2S + H2O2 ⟶ S + 2H2Omanifests:
(A) Acidic nature of H2O2
(B) Alkaline nature of H2O2
(C) Oxidizing nature of H2O2
(D) Reducing nature of H2O2
Answer: Oxidizing nature of H2O2.
5. Among CaH2,NH3,NaH and B2H6, which are covalent hydride?
(A) NH3 and B2H6
(B) NaH and CaH2
(C) NaH and NH3
(D) CaH2 and B2H6
Answer: NH3 and B2H6.
6. Both temporary and permanent hardness are removed on boiling water with:
(A) Ca(OH)2
(B) Na2CO3
(C) CaCO3
(D) CaO
Answer: Na2CO3.
7. Density of water is maximum at:
(A) 0 ͦ C
(B) 100 ͦ C
(C) 4 ͦ C
(D) 0 K
Answer: 4 ͦ C.
CBSE Class 11 Chemistry Chapter 9 Hydrogen MCQs (Set E)
1. Which pair does not show hydrogen isotopes?
(A) Ortho hydrogen and para hydrogen
(B) Protium and deuterium
(C) Deuterium and tritium
(D) Tritium and protium
Answer: Ortho hydrogen and para hydrogen.
2. Para hydrogen is:
(A) Less stable than ortho hydrogen
(B) More stable than ortho hydrogen
(C) As stable as ortho hydrogen
(D) None of the above
Answer: Less stable than ortho hydrogen.
3. In the case of H2O2, the angle between the planes containing the hydrogen atom is:
(A) 100 ͦ
(B) 90 ͦ
(C) 109 ͦ 28′
(D) 180 ͦ
Answer: 90°.
4. Hydrogen resembles in many of its properties with:
(A) Alkali metals
(B) Halogens
(C) Both (A) and (B)
(D) None of these
Answer: Both (A) and (B).
5. The H-O-H angle in water molecule is about
(A) 105°
(B) 102°
(C) 180°
(D) 90°
Answer: 105°
6. Hydrogen is prepared on large scale for industrial use
(A) by Zn + H2SO4
(B) by Al + NaOH
(C) by Na + C2H5OH
(D) From water gas
Answer: From water gas.
7. The most abundant isotope of hydrogen is:
(A) Tritium
(B) Deuterium
(C) Protium
(D) Para-hydrogen
Answer: Protium.
CBSE Class 11 Chemistry Chapter 9 Hydrogen MCQs (Set F)
1. The percentage of para hydrogen in ordinary hydrogen increases when:
(A) Temperature is lowered
(B) Temperature is increased
(C) Pressure is increased and temperature is decreased.
(D) None of the above
Answer: Temperature is lowered.
2. Manufacture of H2 is made by:
(A) Lane’s process
(B) Bosch process
(C) From natural gas
(D) All of these
Answer: All of these.
3. Radioactive isotope of hydrogen is
(A) Tritium
(B) Deuterium
(C) 𝑃𝑎𝑟𝑎 hydrogen
(D) 𝑂𝑟𝑡ℎ𝑜 hydrogen
Answer: Tritium.
4. Hydrogen loses its electron to get +ion of H. In this respect it resembles to:
(A) Transition metals
(B) Alkali metals
(C) Halogens
(D) Noble gases
Answer: Alkali metals.
5. The ortho and para hydrogen possess:
(A) Same physical properties but different chemical properties
(B) Different physical properties but same chemical properties
(C) Same chemical and physical properties
(D) Different, physical and chemical
properties
Answer: Different physical properties but same chemical properties.
6. Which of the following reactions produces hydrogen?
(A) H2S4O8 + H2O .
(B) BaO + HCl
(C) Mg + H2O
(D) Na2O2 + 2HCl
Answer: Mg + H2O.
7. The sum of protons, electrons and neutrons in the heaviest isotope of hydrogen is
(A) 3
(B) 5
(C) 4
(D) 6
Answer: 4.
CBSE Class 11 Chemistry Chapter 9 Hydrogen MCQs (Set G)
1. Hydrogen does not combine with
(A) Helium
(B) Bismuth
(C) Antimony
(D) Sodium
Answer: Helium.
2. When different metals like Zn, Sn, Fe are added to dilute sulphuric acid, same gas, which burns explosively in air, is evolved. The gas is:
(A) O2
(B) N2
(C) Cl2
(D) H2
Answer: H2.
3. Find the pairs which will not produce dihydrogen gas?
(A) Cu + HCl (dil.)
(B) Fe + H2SO4
(C) Mg + steam
(D) Na + alcohol
Answer: Cu + HCl (dil.).
4. TiH1.73 is an example of
(A) Ionic hydride
(B) Covalent hydride
(C) Metallic hydride
(D) Polymeric hydride
Answer: Metallic hydride.
5. Water contracts on heating:
(A) To 100℃
(B) From 0℃ to 4℃
(C) To 273 K
(D) From 10℃ to 20℃
Answer: From 0℃ to 4℃.
6. The maximum possible number of hydrogen bonds a water molecule can form is:
(A) 1
(B) 2
(C) 3
(D) 4
Answer: 4.
7. Density of water is maximum at:
(A) 0 ͦC
(B) 100 ͦ C
(C) 4 ͦC
(D) 0 K
Answer: 4 ͦC.
CBSE Class 11 Chemistry Chapter 9 Hydrogen MCQs (Set H)
1. Ionic hydrides react with water to give
(A) Hydride ions
(B) Acidic solutions
(C) Protons
(D) Basic solutions
Answer: Basic solutions.
2. The hardness of water is estimated by
(A) EDTA method
(B) Titrimetic method
(C) Conductivity method
(D) Distillation method
Answer: EDTA method.
3. Heavy water is represented as
(A) H2O
(B) D2O
(C) D2
(D) H2O at 4℃
Answer: D2O.
4. Which is not a water softener?
(A) Calgon
(B) Permutit
(C) Na2CO3
(D) Na2SO4
Answer: Na2SO4.
5. The boiling point of heavy water is:
(A) 100℃
(B) 101.4℃
(C) 104℃
(D) 102.5℃
Answer: 101.4℃.
6. Which of the following pairs of ions make the water hard?
(A) NH4+, Cl−
(B) Ca+,HCO3−
(C) Ca2+,NO3
(D) Na+, SO4
Answer: Ca+,HCO3.
7. Permutit is:
(A) Hydrated sodium aluminum silicate
(B) Sodium hexa meta-phosphate
(C) Sodium silicate
(D) Sodium meta-aluminate
Answer: Hydrated sodium aluminum silicate.
CBSE Class 11 Chemistry Chapter 9 Hydrogen MCQs (Set I)
1. Permanent hardness can be removed by adding
(A) Cl2
(B) Na2CO3
(C) Ca (OCl) Cl
(D)none
Answer: Na2CO3.
2. Heavy water freezes at:
(A) -3.8 ͦ C
(B) 3.8 ͦ C
(C) 0 ͦ C
(D) 3.2
Answer: 3.8 ͦ C.
3. H2O2 on treatment with chlorine gives:
(A) H2
(B) Oxygen
(C) Hypochlorous acid
(D) ClO2
Answer: Oxygen.
4.H2O2 is formed by which of the following compounds?
(A) Na2O2
(B) NaOH
(C) Na2O
(D) KO2
Answer: Na2O2.
5. On shaking H2O2 with acidified potassium dichromate and ether, ethereal layer becomes
(A) Green
(B) Red
(C) Blue
(D) Brown
Answer: Blue.
6. What is the product of the reaction of H2O2 with Cl2?
(A) O2 + HOCl
(B) HCl + O2
(C) NH3 + HCl
(D) HCl + H2
Answer: HCl + O2.
7. Smell of H2O2 resembles:
(A) Alcohol
(B) Alkali
(C) Nitric acid
(D) Chloroform
Answer: Nitric acid.
We hope you liked our CBSE Class 11 Chemistry Chapter 9 Hydrogen MCQs. If you have any query regarding CBSE Class 11 Chemistry Chapter 9 Hydrogen MCQs, drop a comment below and we will reply you at the earliest.
Related Links:
CBSE Class 11 Chemistry Chapter 2 Structure of Atom MCQs
CBSE Class 11 Chemistry Chapter Some Basic Concepts of Chemistry MCQs
Classification of Elements and Periodicity in Properties Class 11 Chemistry MCQs
