MCQ Questions for Class 11 Chemistry Chapter 9 Hydrogen with Answers

Hydrogen Class 11 Chemistry MCQs Questions with Answers

Check the below NCERT MCQ Questions for Class 11 Chemistry Chapter 9 Hydrogen with Answers Pdf free download. MCQ Questions for Class 11 Chemistry with Answers were prepared based on the latest exam pattern. We have Provided Hydrogen Class 11 Chemistry MCQs Questions with Answers to help students understand the concept very well.

Class 11 Chemistry Chapter 9 Quiz

Class 11 Chemistry Chapter 9 MCQ Online Test

You can refer to NCERT Solutions for Class 11 Chemistry Chapter 9 Hydrogen to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams.

Hydrogen Class 11 Chemistry MCQ online test

Q1.	When water is dropped over sodium peroxide, the colourless gas produced is:
	A.DiNitrogen
	B.DiOxygen
	C.DiHydrogen
	D.Hydrogen Peroxide

Ans: DiOxygen

Q2.	The atomic weights of isotopes of all element are different due to different number of __________.
	A.Protons
	B.Electrons
	C.Neutrons
	D.None of Above

Ans: Neutrons

Q3.	During the reaction of natural gas and steam the catalyst used is
	A.Fe
	B.Zn
	C.Ni
	D.Cr

Ans: Ni

Q4.	Cavendish in 766 discovered.
	A.Nitrogen
	B.Oxygen
	C.Hydrogen
	D.Helium

Ans: Hydrogen

Q5.	Dihydrogen gas may be prepared by heating caustic soda on
	A.Cu
	B.Zn
	C.Na
	D.Ag

Ans: Zn

Q6.	Hydrogen set free at the time of its preparation from its compound in atomic form are called _________.
	A.Nascent Molecular Hydrogen
	B.Nascent Atomic Hydride
	C.Both (1) and (2)
	D.Nascent Hydrogen

Ans: Nascent Molecular Hydrogen

Q7.	Which substance does not speed up decomposition of H₂O₂
	A.Glycerol
	B.Pt
	C.Gold
	D.MnO₂

Ans: Pt

Q8.	Water shows anomalous behavior between
	A.0 to 4 °C
	B.0 to 5 °C
	C.0 to -4 °C
	D.4 to 0 °C

Ans: 0 to 4 °C

Q9.	Which of the following pair of substance will not evolve H₂ gas
	A.Iron and aqueous H₂SO₄
	B.Copper and HCl(aq)
	C.Sodium and Ethanol
	D.Iron and Steam

Ans: Copper and HCl(aq)

Q10.	Tritium __________ radio active isotope.
	A.Beta-Emitting
	B.Alpha – Emitting
	C.Gamma-Emitting
	D.None of the Above

Ans: Beta-Emitting

Q11.	The maximum density of water at 40C is :
	A.1.0 g / cm³
	B.0.998 g / cm³
	C.0.918 g / cm³
	D.1.2 g / dm³

Ans: 1.0 g / cm³

Q12.	Water gas is mixture of hydrogen H₂ and
	A.CO
	B.CO₂
	C.Cl₂
	D.SO₂

Ans: CO

Q13.	The volume of oxygen gas evolved at STP by decomposition of 0.68 g “20 volume” hydrogen peroxide is:
	A.112 ml
	B.224 ml
	C.56 ml
	D.336 ml

Ans: 224 ml

Q14.	Which of the following statements regarding hydrogen peroxide is/are incorrect?
	A.As aerating agent in production of sponge rubber
	B.As an antichlor
	C.For restoring white colour of blackened lead painting
	D.All of the above

Ans: All of the above

Q15.	_______ on water decolourises H₂O₂
	A.O₃
	B.Acidic KMnO₄ solution
	C.Black Suspension of Lead Sulphide( PbS)
	D.None of these

Ans: Black Suspension of Lead Sulphide(PbS)

Q16.	The number of electron hydrogen contains in its K shell is
	A.1
	B.2
	C.3
	D.4

Ans: 1

Q17.	On shaking H₂O₂ with acidified potassium dichromate and ether, ethereal layer becomes:
	A.Green
	B.Red
	C.Blue
	D.Brown

Ans: Blue

Q18.	Hydrogen atom contains one electron. But, the spectrum of hydrogen contains number of lines.
	A.Single
	B.Multiple
	C.Cannot be determined
	D.None of the Above