Students should refer to Worksheets Class 11 Chemistry Hydrogen Chapter 9 provided below with important questions and answers. These important questions with solutions for Chapter 9 Hydrogen have been prepared by expert teachers for Class 11 Chemistry based on the expected pattern of questions in the class 11 exams. We have provided Worksheets for Class 11 Chemistry for all chapters on our website. You should carefully learn all the important examinations questions provided below as they will help you to get better marks in your class tests and exams.
Hydrogen Worksheets Class 11 Chemistry
Question. Cavendish in 766 discovered.
(a) Nitrogen
(b) Oxygen
(c) Hydrogen
(d) Helium
Answer
C
Question. 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
Answer
D
Question. 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
Answer
B
Question. 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
Answer
B
Question. 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
Answer
A
Question. H2O2 used in rocket has the concentration:
(a) 50%
(b) 90%
(c) 70%
(d) 30%
Answer
B
Question. On shaking H2O2 with acidified potassium dichromate and ether, ethereal layer becomes:
(a) Green
(b) Red
(c) Blue
(d) Brown
Answer
C
Question. _______ on water decolourises H2O2
(a) O3
(b) Acidic KMnO4 solution
(c) Black Suspension of Lead Sulphide( PbS)
(d) None of these
Answer
C
Question. Which substance does not speed up decomposition of H2O2
(a) Glycerol
(b) Pt
(c) Gold
(d) MnO2
Answer
B
Question. During the reaction of natural gas and steam the catalyst used is
(a) Fe
(b) Zn
(c) Ni
(d) Cr
Answer
C
