Previous Year Questions (2014-20) - Hydrogen NEET Notes | EduRev

Chemistry 28 Years Past year papers for NEET/AIPMT Class 11

NEET : Previous Year Questions (2014-20) - Hydrogen NEET Notes | EduRev

The document Previous Year Questions (2014-20) - Hydrogen NEET Notes | EduRev is a part of the NEET Course Chemistry 28 Years Past year papers for NEET/AIPMT Class 11.
All you need of NEET at this link: NEET

Q.1. Match the following and identify the correct option.     (2020)
Previous Year Questions (2014-20) - Hydrogen NEET Notes | EduRev
Previous Year Questions (2014-20) - Hydrogen NEET Notes | EduRev
Ans: c
⇒ CO(g) + H2(g) = Water gas or synthesis gas
⇒ Temporary hardness of water is due to bicarbonates of Ca2+ & Mg2+
⇒ B2H6 is a electron deficient compound due to presence of banana bond.
⇒ H2O2 open book like structure which is non-planar

Q.2. The method used to remove temporary hardness of water is :    (2019)
(a) Calgon's method
(b) Clark's method
(c) Ion-exchange method
(d) Synthetic resins method
Ans: 
b
Previous Year Questions (2014-20) - Hydrogen NEET Notes | EduRev
Clark's method is used to remove temporary hardness of water, in which bicarbonates of calcium and magnesium are reacted with slaked lime Ca(OH)2.

Q.3. Which of the following statements about hydrogen is incorrect ?    (2016)
(a) Dihydrogen does not act as a reducing agent.
(b) Hydrogen has three isotopes of which tritium is the most common.
(c) Hydrogen never acts as cation in ionic salts.
(d) Hydronium ion, H3O+ exists freely in solution.
Ans:
a,b
Dihydrogen act as reducing agent for eg: 3H+ N→ 2NH3
Hydrogen has three isotopes of which protium (1H1) is the most common.

Q.4. (A) H2O2 +O3 → H2O+ 2O2
(B) H2O2 + Ag2O → 2Ag + H2O + O2

Role of hydrogen peroxide in the above reactions is respectively :    (2014)
(a) reducing in (A) and (B)
(b) oxidizing in (A) and (B)
(c) oxidizing in (A) and reducing in (B)
(d) reducing in (A) and oxidizing in (B)
Ans: a

H2O2 acts as reducing agent in both the reactions
H2O2 +O3 → H2O+ 2O2
H2O2 + Ag2O → 2Ag + H2O + O2

Offer running on EduRev: Apply code STAYHOME200 to get INR 200 off on our premium plan EduRev Infinity!

Related Searches

Extra Questions

,

ppt

,

Sample Paper

,

Previous Year Questions (2014-20) - Hydrogen NEET Notes | EduRev

,

Summary

,

Free

,

shortcuts and tricks

,

Important questions

,

practice quizzes

,

video lectures

,

MCQs

,

past year papers

,

Viva Questions

,

pdf

,

study material

,

mock tests for examination

,

Semester Notes

,

Previous Year Questions (2014-20) - Hydrogen NEET Notes | EduRev

,

Exam

,

Previous Year Questions with Solutions

,

Objective type Questions

,

Previous Year Questions (2014-20) - Hydrogen NEET Notes | EduRev

;