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Previous year question hub

Hydrogen - Inorganic Chemistry - Chemistry Previous Year Questions

Practice Hydrogen - Inorganic Chemistry - Chemistry previous year questions organised from real papers, with year-wise coverage and clear topic navigation.

81Papers
13Years
87Questions
1Topics

Hydrogen question pattern

Every graph below is calculated only from this selection.

Questions by year

Year-wise coverage for Hydrogen. Each bar uses a separate theme-derived color.

Difficulty distribution

How the classified questions are distributed by difficulty.

Easy 71 81.6%
Medium 16 18.4%

Question type distribution

MCQ, numerical, multiple-select and other formats found in these papers.

Multiple Choices 85 97.7%
Numerical Answer Type (NAT) 2 2.3%

Subject weightage

Top subjects by unique question coverage.

Chemistry
87 Qs

Most asked topics

Top topics across the included previous year papers.

Inorganic Chemistry
87 Qs

Subtopic coverage

Top subtopics inside this exact selection.

Hydrogen
87 Qs

Paper coverage

Question coverage for the most populated papers. Every active PYP paper remains listed below.

JEE MAIN 2023 ONLINE 31ST JANUARY EVENING SHIFT
2 Qs
JEE MAIN 2023 ONLINE 10TH APRIL EVENING SHIFT
1 Qs
JEE MAIN 2023 ONLINE 10TH APRIL MORNING SHIFT
1 Qs
JEE MAIN 2023 ONLINE 11TH APRIL EVENING SHIFT
1 Qs
JEE MAIN 2023 ONLINE 11TH APRIL MORNING SHIFT
1 Qs
JEE MAIN 2023 ONLINE 12TH APRIL MORNING SHIFT
1 Qs
JEE MAIN 2023 ONLINE 13TH APRIL EVENING SHIFT
1 Qs
JEE MAIN 2023 ONLINE 13TH APRIL MORNING SHIFT
1 Qs
JEE MAIN 2023 ONLINE 1ST FEBRUARY EVENING SHIFT
1 Qs
JEE MAIN 2023 ONLINE 1ST FEBRUARY MORNING SHIFT
1 Qs
JEE MAIN 2023 ONLINE 24TH JANUARY EVENING SHIFT
1 Qs
JEE MAIN 2023 ONLINE 25TH JANUARY EVENING SHIFT
1 Qs
JEE MAIN 2023 ONLINE 29TH JANUARY MORNING SHIFT
1 Qs
JEE MAIN 2023 ONLINE 31ST JANUARY MORNING SHIFT
1 Qs
JEE MAIN 2023 ONLINE 6TH APRIL MORNING SHIFT
1 Qs
JEE MAIN 2023 ONLINE 8TH APRIL EVENING SHIFT
1 Qs
JEE MAIN 2022 ONLINE 28TH JULY EVENING SHIFT
2 Qs
JEE MAIN 2022 ONLINE 24TH JUNE MORNING SHIFT
1 Qs
JEE MAIN 2022 ONLINE 25TH JULY EVENING SHIFT
1 Qs
JEE MAIN 2022 ONLINE 25TH JULY MORNING SHIFT
1 Qs
JEE MAIN 2022 ONLINE 26TH JULY EVENING SHIFT
1 Qs
JEE MAIN 2022 ONLINE 26TH JULY MORNING SHIFT
1 Qs
JEE MAIN 2022 ONLINE 26TH JUNE EVENING SHIFT
1 Qs
JEE MAIN 2022 ONLINE 26TH JUNE MORNING SHIFT
1 Qs
JEE MAIN 2022 ONLINE 27TH JULY EVENING SHIFT
1 Qs
JEE MAIN 2022 ONLINE 27TH JULY MORNING SHIFT
1 Qs
JEE MAIN 2022 ONLINE 28TH JULY MORNING SHIFT
1 Qs
JEE MAIN 2022 ONLINE 28TH JUNE EVENING SHIFT
1 Qs
JEE MAIN 2022 ONLINE 28TH JUNE MORNING SHIFT
1 Qs
JEE MAIN 2022 ONLINE 29TH JUNE MORNING SHIFT
1 Qs
JEE Main 2021 (Online) 24th February Evening Shift
1 Qs
JEE Main 2021 (Online) 24th February Morning Shift
1 Qs
JEE Main 2021 (Online) 25th February Evening Shift
1 Qs
JEE Main 2021 (Online) 25th February Morning Shift
1 Qs
JEE Main 2021 (Online) 26th February Morning Shift
1 Qs
JEE MAIN 2021 ONLINE 16TH MARCH EVENING SHIFT
1 Qs
JEE MAIN 2021 ONLINE 16TH MARCH MORNING SHIFT
1 Qs
JEE MAIN 2021 ONLINE 17TH MARCH EVENING SHIFT
1 Qs
JEE MAIN 2021 ONLINE 17TH MARCH MORNING SHIFT
1 Qs
JEE MAIN 2021 ONLINE 18TH MARCH EVENING SHIFT
1 Qs
JEE MAIN 2021 ONLINE 1ST SEPTEMBER EVENING SHIFT
1 Qs
JEE MAIN 2021 ONLINE 20TH JULY EVENING SHIFT
1 Qs
JEE MAIN 2021 ONLINE 20TH JULY MORNING SHIFT
1 Qs
JEE MAIN 2021 ONLINE 22TH JULY EVENING SHIFT
1 Qs
JEE MAIN 2021 ONLINE 25TH JULY MORNING SHIFT
1 Qs
JEE MAIN 2021 ONLINE 26TH AUGUST EVENING SHIFT
1 Qs
JEE MAIN 2021 ONLINE 26TH AUGUST MORNING SHIFT
1 Qs
JEE MAIN 2021 ONLINE 27TH AUGUST EVENING SHIFT
1 Qs
JEE MAIN 2021 ONLINE 27TH AUGUST MORNING SHIFT
1 Qs
JEE MAIN 2021 ONLINE 27TH JULY EVENING SHIFT
1 Qs
JEE MAIN 2021 ONLINE 31ST AUGUST EVENING SHIFT
1 Qs
JEE MAIN 2021 ONLINE 31ST AUGUST MORNING SHIFT
1 Qs
JEE MAIN 2020 ONLINE 5TH SEPTEMBER EVENING SLOT
2 Qs
JEE MAIN 2020 ONLINE 3RD SEPTEMBER MORNING SLOT
1 Qs
JEE MAIN 2020 ONLINE 5TH SEPTEMBER MORNING SLOT
1 Qs
JEE MAIN 2020 ONLINE 6TH SEPTEMBER EVENING SLOT
1 Qs
JEE MAIN 2020 ONLINE 7TH JANUARY EVENING SLOT
1 Qs
JEE MAIN 2020 ONLINE 7TH JANUARY MORNING SLOT
1 Qs
JEE MAIN 2020 ONLINE 9TH JANUARY EVENING SLOT
1 Qs
JEE MAIN 2019 ONLINE 10TH JANUARY MORNING SLOT
2 Qs
JEE MAIN 2019 ONLINE 11TH JANUARY MORNING SLOT
2 Qs
JEE MAIN 2019 ONLINE 10TH APRIL EVENING SLOT
1 Qs
JEE MAIN 2019 ONLINE 10TH APRIL MORNING SLOT
1 Qs
JEE MAIN 2019 ONLINE 12TH APRIL EVENING SLOT
1 Qs
JEE MAIN 2019 ONLINE 12TH APRIL MORNING SLOT
1 Qs
JEE MAIN 2019 ONLINE 12TH JANUARY EVENING SLOT
1 Qs
JEE MAIN 2019 ONLINE 8TH APRIL EVENING SLOT
1 Qs
JEE MAIN 2019 ONLINE 8TH APRIL MORNING SLOT
1 Qs
JEE MAIN 2019 ONLINE 9TH APRIL MORNING SLOT
1 Qs
JEE MAIN 2019 ONLINE 9TH JANUARY EVENING SLOT
1 Qs
JEE MAIN 2019 ONLINE 9TH JANUARY MORNING SLOT
1 Qs
JEE MAIN 2018 OFFLINE
1 Qs
JEE MAIN 2017 ONLINE 8TH APRIL MORNING SLOT
1 Qs
JEE MAIN 2016 OFFLINE
1 Qs
JEE MAIN 2016 ONLINE 10TH APRIL MORNING SLOT
1 Qs
JEE MAIN 2016 ONLINE 9TH APRIL MORNING SLOT
1 Qs
JEE MAIN 2015 OFFLINE
1 Qs
AIEEE 2012
1 Qs
AIEEE 2008
1 Qs
AIEEE 2005
1 Qs
AIEEE 2003
2 Qs

Included previous year papers

Newest papers appear first. Sort by year, question coverage or name.

PaperYear / sessionQuestions in this viewOpen
JEE MAIN 2023 ONLINE 10TH APRIL EVENING SHIFT20231View paper
JEE MAIN 2023 ONLINE 10TH APRIL MORNING SHIFT20231View paper
JEE MAIN 2023 ONLINE 11TH APRIL EVENING SHIFT20231View paper
JEE MAIN 2023 ONLINE 11TH APRIL MORNING SHIFT20231View paper
JEE MAIN 2023 ONLINE 12TH APRIL MORNING SHIFT20231View paper
JEE MAIN 2023 ONLINE 13TH APRIL EVENING SHIFT20231View paper
JEE MAIN 2023 ONLINE 13TH APRIL MORNING SHIFT20231View paper
JEE MAIN 2023 ONLINE 1ST FEBRUARY EVENING SHIFT20231View paper
JEE MAIN 2023 ONLINE 1ST FEBRUARY MORNING SHIFT20231View paper
JEE MAIN 2023 ONLINE 24TH JANUARY EVENING SHIFT20231View paper
JEE MAIN 2023 ONLINE 25TH JANUARY EVENING SHIFT20231View paper
JEE MAIN 2023 ONLINE 29TH JANUARY MORNING SHIFT20231View paper
JEE MAIN 2023 ONLINE 31ST JANUARY EVENING SHIFT20232View paper
JEE MAIN 2023 ONLINE 31ST JANUARY MORNING SHIFT20231View paper
JEE MAIN 2023 ONLINE 6TH APRIL MORNING SHIFT20231View paper
JEE MAIN 2023 ONLINE 8TH APRIL EVENING SHIFT20231View paper
JEE MAIN 2022 ONLINE 24TH JUNE MORNING SHIFT20221View paper
JEE MAIN 2022 ONLINE 25TH JULY EVENING SHIFT20221View paper
JEE MAIN 2022 ONLINE 25TH JULY MORNING SHIFT20221View paper
JEE MAIN 2022 ONLINE 26TH JULY EVENING SHIFT20221View paper
JEE MAIN 2022 ONLINE 26TH JULY MORNING SHIFT20221View paper
JEE MAIN 2022 ONLINE 26TH JUNE EVENING SHIFT20221View paper
JEE MAIN 2022 ONLINE 26TH JUNE MORNING SHIFT20221View paper
JEE MAIN 2022 ONLINE 27TH JULY EVENING SHIFT20221View paper
JEE MAIN 2022 ONLINE 27TH JULY MORNING SHIFT20221View paper
JEE MAIN 2022 ONLINE 28TH JULY EVENING SHIFT20222View paper
JEE MAIN 2022 ONLINE 28TH JULY MORNING SHIFT20221View paper
JEE MAIN 2022 ONLINE 28TH JUNE EVENING SHIFT20221View paper
JEE MAIN 2022 ONLINE 28TH JUNE MORNING SHIFT20221View paper
JEE MAIN 2022 ONLINE 29TH JUNE MORNING SHIFT20221View paper
JEE Main 2021 (Online) 24th February Evening Shift20211View paper
JEE Main 2021 (Online) 24th February Morning Shift20211View paper
JEE Main 2021 (Online) 25th February Evening Shift20211View paper
JEE Main 2021 (Online) 25th February Morning Shift20211View paper
JEE Main 2021 (Online) 26th February Morning Shift20211View paper
JEE MAIN 2021 ONLINE 16TH MARCH EVENING SHIFT20211View paper
JEE MAIN 2021 ONLINE 16TH MARCH MORNING SHIFT20211View paper
JEE MAIN 2021 ONLINE 17TH MARCH EVENING SHIFT20211View paper
JEE MAIN 2021 ONLINE 17TH MARCH MORNING SHIFT20211View paper
JEE MAIN 2021 ONLINE 18TH MARCH EVENING SHIFT20211View paper
JEE MAIN 2021 ONLINE 1ST SEPTEMBER EVENING SHIFT20211View paper
JEE MAIN 2021 ONLINE 20TH JULY EVENING SHIFT20211View paper
JEE MAIN 2021 ONLINE 20TH JULY MORNING SHIFT20211View paper
JEE MAIN 2021 ONLINE 22TH JULY EVENING SHIFT20211View paper
JEE MAIN 2021 ONLINE 25TH JULY MORNING SHIFT20211View paper
JEE MAIN 2021 ONLINE 26TH AUGUST EVENING SHIFT20211View paper
JEE MAIN 2021 ONLINE 26TH AUGUST MORNING SHIFT20211View paper
JEE MAIN 2021 ONLINE 27TH AUGUST EVENING SHIFT20211View paper
JEE MAIN 2021 ONLINE 27TH AUGUST MORNING SHIFT20211View paper
JEE MAIN 2021 ONLINE 27TH JULY EVENING SHIFT20211View paper
JEE MAIN 2021 ONLINE 31ST AUGUST EVENING SHIFT20211View paper
JEE MAIN 2021 ONLINE 31ST AUGUST MORNING SHIFT20211View paper
JEE MAIN 2020 ONLINE 3RD SEPTEMBER MORNING SLOT20201View paper
JEE MAIN 2020 ONLINE 5TH SEPTEMBER EVENING SLOT20202View paper
JEE MAIN 2020 ONLINE 5TH SEPTEMBER MORNING SLOT20201View paper
JEE MAIN 2020 ONLINE 6TH SEPTEMBER EVENING SLOT20201View paper
JEE MAIN 2020 ONLINE 7TH JANUARY EVENING SLOT20201View paper
JEE MAIN 2020 ONLINE 7TH JANUARY MORNING SLOT20201View paper
JEE MAIN 2020 ONLINE 9TH JANUARY EVENING SLOT20201View paper
JEE MAIN 2019 ONLINE 10TH APRIL EVENING SLOT20191View paper
JEE MAIN 2019 ONLINE 10TH APRIL MORNING SLOT20191View paper
JEE MAIN 2019 ONLINE 10TH JANUARY MORNING SLOT20192View paper
JEE MAIN 2019 ONLINE 11TH JANUARY MORNING SLOT20192View paper
JEE MAIN 2019 ONLINE 12TH APRIL EVENING SLOT20191View paper
JEE MAIN 2019 ONLINE 12TH APRIL MORNING SLOT20191View paper
JEE MAIN 2019 ONLINE 12TH JANUARY EVENING SLOT20191View paper
JEE MAIN 2019 ONLINE 8TH APRIL EVENING SLOT20191View paper
JEE MAIN 2019 ONLINE 8TH APRIL MORNING SLOT20191View paper
JEE MAIN 2019 ONLINE 9TH APRIL MORNING SLOT20191View paper
JEE MAIN 2019 ONLINE 9TH JANUARY EVENING SLOT20191View paper
JEE MAIN 2019 ONLINE 9TH JANUARY MORNING SLOT20191View paper
JEE MAIN 2018 OFFLINE20181View paper
JEE MAIN 2017 ONLINE 8TH APRIL MORNING SLOT20171View paper
JEE MAIN 2016 OFFLINE20161View paper
JEE MAIN 2016 ONLINE 10TH APRIL MORNING SLOT20161View paper
JEE MAIN 2016 ONLINE 9TH APRIL MORNING SLOT20161View paper
JEE MAIN 2015 OFFLINE20151View paper
AIEEE 201220121View paper
AIEEE 200820081View paper
AIEEE 200520051View paper
AIEEE 200320032View paper

All Hydrogen previous year questions

Practice every matching question in batches of 20, with every available option.

1
2003 · Chemistry · Inorganic Chemistry · Hydrogen
AIEEE 2003
Which one of the following process will produce hard water?
A
Saturation of water with MgCO3
B
Saturation of water with CaSO4
C
Addition of Na2SO4 to water
D
Saturation of water with CaCO3
Open complete paper
2
2003 · Chemistry · Inorganic Chemistry · Hydrogen
AIEEE 2003
Which of the following could act as a propellant for rockets?
A
Liquid oxygen + liquid argon
B
Liquid hydrogen + liquid oxygen
C
Liquid nitrogen + liquid oxygen
D
Liquid hydrogen + liquid nitrogen
Open complete paper
3
2005 · Chemistry · Inorganic Chemistry · Hydrogen
AIEEE 2005
Which of the following statements in relation to the hydrogen atom is correct?
A
3s orbital is lower in energy than 3p orbital
B
3p orbital is lower in energy than 3d orbital
C
3s and 3p orbitals are of lower energy than 3d orbital
D
3s, 3p and 3d orbitals all have the same energy
Open complete paper
4
2008 · Chemistry · Inorganic Chemistry · Hydrogen
AIEEE 2008
In context with the industrial preparation of hydrogen from water gas (CO + H2), which of the following is the correct statement?
A
CO and H2 are fractionally separated using differences in their densities
B
CO is removed by absorption in aqueous Cu2Cl2 solution
C
H2 is removed through occlusion with Pd
D
CO is oxidised to CO2 with steam in the presence of a catalyst followed by absorption of CO2 in alkali
Open complete paper
5
2012 · Chemistry · Inorganic Chemistry · Hydrogen
AIEEE 2012
Very pure hydrogen (99.9%) can be made by which of the following processes?
A
Reaction of methane with steam
B
Mixing natural hydrocarbons of high molecular weight
C
Electrolysis of water
D
Reaction of salt like hydrides with water
Open complete paper
6
2015 · Chemistry · Inorganic Chemistry · Hydrogen
JEE MAIN 2015 OFFLINE
From the following statements regarding H2O2, choose the incorrect statement :
A
It decomposes on exposure to light
B
It has to be stored in plastic or wax lined glass bottles in dark
C
It has to be kept away from dust
D
It can act only as an oxidizing agent
Open complete paper
7
2016 · Chemistry · Inorganic Chemistry · Hydrogen
JEE MAIN 2016 OFFLINE
Which one of the following statements about water is FALSE?
A
Water is oxidized to oxygen during photosynthesis
B
Water can act both as an acid and as a base.
C
There is extensive intramolecular hydrogen bonding in the condensed phase.
D
Ice formed by heavy water sinks in normal water
Open complete paper
8
2016 · Chemistry · Inorganic Chemistry · Hydrogen
JEE MAIN 2016 ONLINE 10TH APRIL MORNING SLOT
Identify the reaction which does not liberate hydrogen :
A
Reaction of zinc with aqueous alkali.
B
Electrolysis of acidified water using Pt electrodes.
C
Allowing a solution of sodium in liquid ammonia to stand.
D
Reaction of lithium hydride with B2H6.
Open complete paper
9
2016 · Chemistry · Inorganic Chemistry · Hydrogen
JEE MAIN 2016 ONLINE 9TH APRIL MORNING SLOT
Identify the incorrect statement regarding heavy water :
A
It reacts with Al4C3 to produce CD4 and Al(OD)3 .
B
It is used as a coolant in nuclear reactors.
C
It reacts with CaC2 to produce C2D2 and Ca(OD)2 .
D
It reacts with SO3 to form deuterated sulphuric acid (D2SO4).
Open complete paper
10
2017 · Chemistry · Inorganic Chemistry · Hydrogen
JEE MAIN 2017 ONLINE 8TH APRIL MORNING SLOT
In which of the following reactions, hydrogen peroxide acts as an oxidizing agent ?
A
HOCl + H2O2 \(\to\) H3O+ + Cl\(-\) + O2
B
I2 + H2O2 + 2OH\(-\) \(\to\) 2I\(-\) + 2H2O + O2
C
2Mn\(O_4^ -\) + 3H2O2 \(\to\) 2 MnO2 + 3O2 + 2H2O + 2OH\(-\)
D
PbS + 4H2O2 \(\to\) PbSO4 + 4H2O
Open complete paper
11
2018 · Chemistry · Inorganic Chemistry · Hydrogen
JEE MAIN 2018 OFFLINE
Hydrogen peroxide oxidises [Fe(CN)6]4- to [Fe(CN)6]3- in acidic medium but reduces [Fe(CN)6]3- to [Fe(CN)6]4- in alkaline medium. The other products formed are, respectively :
A
H2O and (H2O + OH-)
B
(H2O + O2) and H2O
C
(H2O + O2) and (H2O + OH-)
D
H2O and (H2O + O2)
Open complete paper
12
2019 · Chemistry · Inorganic Chemistry · Hydrogen
JEE MAIN 2019 ONLINE 10TH APRIL EVENING SLOT
The correct statements among (a) to (d) are :
(a) saline hydrides produce H2 gas when reacted with H2O.
(b) reaction of LiAlH4 with BF3 leads to B2H6.
(c) PH3 and CH4 are electron - rich and electron - precise hydrides, respectively.
(d) HF and CH4 are called as molecular
A
(a), (b), (c) and (d)
B
(a), (c) and (d) only
C
(c) and (d) only
D
(a), (b) and (c) only
Open complete paper
13
2019 · Chemistry · Inorganic Chemistry · Hydrogen
JEE MAIN 2019 ONLINE 10TH APRIL MORNING SLOT
The synonym for water gas when used in the production of methanol is :
A
fuel gas
B
laughing gas
C
syn gas
D
natural gas
Open complete paper
14
2019 · Chemistry · Inorganic Chemistry · Hydrogen
JEE MAIN 2019 ONLINE 10TH JANUARY MORNING SLOT
The chemical nature of hydrogen peroxide is :
A
Oxidising agent in acidic medium, but not in basic medium
B
Oxidising and reducing agent in both acidic and basic medium
C
Reducing agent in basic medium, but not in acidic medium
D
Oxidising and reducing agent in acidic medium, but not in basic medium.
Open complete paper
15
2019 · Chemistry · Inorganic Chemistry · Hydrogen
JEE MAIN 2019 ONLINE 10TH JANUARY MORNING SLOT
The total number of isotopes of hydrogen and number of radioactive isotopes among them, respectively, are :
A
3 and 2
B
2 and 1
C
2 and 0
D
3 and 1
Open complete paper
16
2019 · Chemistry · Inorganic Chemistry · Hydrogen
JEE MAIN 2019 ONLINE 11TH JANUARY MORNING SLOT
NaH is an example of :
A
metallic hydride
B
saline hydride
C
electron-rich hydrid
D
molecular hydride
Open complete paper
17
2019 · Chemistry · Inorganic Chemistry · Hydrogen
JEE MAIN 2019 ONLINE 11TH JANUARY MORNING SLOT
The correct statements among (a) to (d) regarding H2 as a fuel are :

(a)   It produces less pollutants than petrol.

(b)   A cylinder of compressed dihydrogen weighs \(\sim\) 30 times more than a petrol tank producing the same amount of energy.

(c)   Dihydrogen is stored in tanks of metal alloys like NaNi5.

(d)   On combustion, values of energy released per gram of liquid dihydrogen and LPG are 50 and 142 KJ, respectively.
A
(a) and (c) only
B
(b) and (d) only
C
(a), (b) and (c) only
D
(b), (c) and (d) only
Open complete paper
18
2019 · Chemistry · Inorganic Chemistry · Hydrogen
JEE MAIN 2019 ONLINE 12TH APRIL EVENING SLOT
The temporary hardness of a water sample is due to compound X. Boiling this sample converts X to compound Y. X and Y, respectively, are :
A
Mg(HCO3)2 and MgCO3
B
Ca(HO3)2 and CaO
C
Ca(HCO3)2 and Ca(OH)2
D
Mg(HCO3)2 and Mg(OH)2
Open complete paper
19
2019 · Chemistry · Inorganic Chemistry · Hydrogen
JEE MAIN 2019 ONLINE 12TH APRIL MORNING SLOT
The metal that gives hydrogen gas upon treatment with both acid as well as base is :
A
mercury
B
zinc
C
iron
D
magnesium
Open complete paper
20
2019 · Chemistry · Inorganic Chemistry · Hydrogen
JEE MAIN 2019 ONLINE 12TH JANUARY EVENING SLOT
The volume strength of 1M H2O2 is : (Molar mass of H2O2 = 34 g mol–1)
A
5.6
B
22.4
C
11.35
D
16.8
Open complete paper

Showing 20 of 87 questions