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Previous year question hub

Some Basic Concepts Of Chemistry - Physical Chemistry - Chemistry Previous Year Questions

Practice Some Basic Concepts Of Chemistry - Physical Chemistry - Chemistry previous year questions organised from real papers, with year-wise coverage and clear topic navigation.

9Papers
5Years
13Questions
1Topics

Some Basic Concepts Of Chemistry question pattern

Every graph below is calculated only from this selection.

Questions by year

Year-wise coverage for Some Basic Concepts Of Chemistry. Each bar uses a separate theme-derived color.

Difficulty distribution

How the classified questions are distributed by difficulty.

Not classified 13 100%

Question type distribution

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

Multiple Choices 13 100%

Subject weightage

Top subjects by unique question coverage.

Chemistry
13 Qs

Most asked topics

Top topics across the included previous year papers.

Physical Chemistry
13 Qs

Subtopic coverage

Top subtopics inside this exact selection.

Some Basic Concepts Of Chemistry
13 Qs

Paper coverage

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

COMEDK 2025 EVENING SHIFT
1 Qs
COMEDK 2025 Morning Shift
1 Qs
COMEDK 2024 EVENING SHIFT
2 Qs
COMEDK 2024 AFTERNOON SHIFT
1 Qs
COMEDK 2024 MORNING SHIFT
1 Qs
COMEDK 2023 EVENING SHIFT
1 Qs
COMEDK 2023 Morning Shift
1 Qs
COMEDK 2021
1 Qs
COMEDK 2020
4 Qs

Included previous year papers

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

PaperYear / sessionQuestions in this viewOpen
COMEDK 2025 EVENING SHIFT20251View paper
COMEDK 2025 Morning Shift20251View paper
COMEDK 2024 AFTERNOON SHIFT20241View paper
COMEDK 2024 EVENING SHIFT20242View paper
COMEDK 2024 MORNING SHIFT20241View paper
COMEDK 2023 EVENING SHIFT20231View paper
COMEDK 2023 Morning Shift20231View paper
COMEDK 202120211View paper
COMEDK 202020204View paper

All Some Basic Concepts Of Chemistry previous year questions

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

1
2020 · Chemistry · Physical Chemistry · Some Basic Concepts Of Chemistry
COMEDK 2020

Which one of the following has maximum number of atoms of oxygen?

A
2 g of water
B
2 g of sulphur dioxide
C
2 g of carbon dioxide
D
2 g of carbon monoxide
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2
2020 · Chemistry · Physical Chemistry · Some Basic Concepts Of Chemistry
COMEDK 2020

The number of gram molecules of chlorine in \(6.02\times10^{25}\) hydrogen chloride molecules is

A
5
B
50
C
100
D
10
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3
2020 · Chemistry · Physical Chemistry · Some Basic Concepts Of Chemistry
COMEDK 2020

The mass of a metal, with equivalent mass 31.75, which would combine with 8 g of oxygen is

A
31.75
B
3.175
C
8
D
1
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4
2020 · Chemistry · Physical Chemistry · Some Basic Concepts Of Chemistry
COMEDK 2020

Molarity of a given orthophosphoric acid solution is 3M. It’s normality is

A
1 N
B
3 N
C
0.3 N
D
9 N
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5
2021 · Chemistry · Physical Chemistry · Some Basic Concepts Of Chemistry
COMEDK 2021

What would be the molarity of one litre solution of 22.2 g of CaCl\(_2\) ?

A
0.2 M
B
0.4 M
C
0.6 M
D
0.8 M
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6
2023 · Chemistry · Physical Chemistry · Some Basic Concepts Of Chemistry
COMEDK 2023 EVENING SHIFT

\(\mathrm{Mg}(\mathrm{OH})_2\) is used as an antacid. If a person, suffering from acidity, produces \(2.5 \mathrm{~L}\) of Gastric juice in a day, approximately how many antacid tablets, each containing \(600 \mathrm{~mg}\) of \(\mathrm{Mg}(\mathrm{OH})_2\), will be required to completely neutralise the whole \(\mathrm{HCl}\) produced in the stomach in one day? (Gastric juice contains \(3.0 \mathrm{~g}\) of \(\mathrm{HCl}\) per L). (Atomic masses: \(\mathrm{Mg}=24 \mathrm{~g} / \mathrm{mol}, \mathrm{O}=16 \mathrm{~g} / \mathrm{mol}\) & \(\mathrm{H}=1 \mathrm{~g} / \mathrm{mol}\).)

A
10 tablets
B
4 tablets
C
7 tablets
D
6 tablets
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7
2024 · Chemistry · Physical Chemistry · Some Basic Concepts Of Chemistry
COMEDK 2024 AFTERNOON SHIFT

When 1 mole of \(\mathrm{O}_2\) and 1 mole of ammonia are made to react in the reaction,

$$4 \mathrm{NH}_3(\mathrm{~g})+5 \mathrm{O}_2(\mathrm{~g}) \rightarrow 4 \mathrm{NO}(\mathrm{g})+6 \mathrm{H}_2 \mathrm{O}(\mathrm{g})$$

A
\(\mathrm{NH}_3 \text { is the limiting reagent }\)
B
\(1.0 \text { mole of NO will be produced }\)
C
\(6 \text { moles of } \mathrm{H}_2 \mathrm{O} \text { will be produced }\)
D
\(\text { Oxygen is the limiting reagent }\)
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8
2024 · Chemistry · Physical Chemistry · Some Basic Concepts Of Chemistry
COMEDK 2024 EVENING SHIFT

What mass of Silver chloride, in grams, gets precipitated when \(150 \mathrm{~ml}\) of \(32 \%\) solution of Silver nitrate is reacted with \(150 \mathrm{ml}\) of \(11 \%\) Sodium chloride solution? Atomic mass in \(\mathrm{g} / \mathrm{mol}: \mathrm{Ag}=108, \mathrm{Na}=23, \mathrm{Cl}=35.5, \mathrm{~N}=14, \mathrm{O}=16\)

A
40.47
B
32.45
C
48.0
D
16.52
Open complete paper
9
2024 · Chemistry · Physical Chemistry · Some Basic Concepts Of Chemistry
COMEDK 2024 EVENING SHIFT

Sulphuric acid used in Lead Storage battery has a concentration of \(4.5 \mathrm{~M}\) and a density of \(1.28 \mathrm{~g} / \mathrm{~ml}\). The molality of the acid is __________.

A
4.012
B
2.568
C
5.364
D
3.516
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10
2024 · Chemistry · Physical Chemistry · Some Basic Concepts Of Chemistry
COMEDK 2024 MORNING SHIFT

A given mass of a hydrocarbon on complete combustion produced \(176 \mathrm{~g}\) of \(\mathrm{CO}_2\) and \(90 \mathrm{~g}\) of \(\mathrm{H}_2 \mathrm{O}\). What is the Molecular formula of the compound?

A
\(\mathrm{C}_3 \mathrm{H}_8\)
B
\(\mathrm{C}_6 \mathrm{H}_{12}\)
C
\(\mathrm{C}_4 \mathrm{H}_{10}\)
D
\(\mathrm{C}_5 \mathrm{H}_{12}\)
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11
2025 · Chemistry · Physical Chemistry · Some Basic Concepts Of Chemistry
COMEDK 2025 EVENING SHIFT
The mole fraction of an unknown solute in 1560 g of Benzene is 0.5 . What is the molality of the solution? (M. M of Benzene:78 amu)
A
12.8
B
10.3
C
3.25
D
16.9
Open complete paper
12
2023 · Chemistry · Physical Chemistry · Some Basic Concepts Of Chemistry
COMEDK 2023 Morning Shift

\(15 \mathrm{~g}\) of \(\mathrm{CaCO}_3\) completely reacts with

A
\(6.95 \mathrm{~g}\) of \(\mathrm{HCl}\)
B
10.95 g of \(\mathrm{HCl}\)
C
\(11.95 \mathrm{~g}\) of \(\mathrm{HCl}\)
D
\(1.15 \mathrm{~g}\) of \(\mathrm{HCl}\)
Open complete paper
13
2025 · Chemistry · Physical Chemistry · Some Basic Concepts Of Chemistry
COMEDK 2025 Morning Shift
If X is a haloalkane with a single Chlorine atom per molecule and the percentage of Cl is 55 , what would be the number of Cl atoms present in 0.1 g of the haloalkane? Atomic mass of $\mathrm{Cl}=35.5 \mathrm{~g} / \mathrm{mol}$
A
$6.022 \times 10^{22}$
B
$1.2044 \times 10^{21}$
C
$9.328 \times 10^{20}$
D
$9.329 \times 10^{23}$
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