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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.

40Papers
33Years
80Questions
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.

Medium 38 47.5%
Easy 32 40%
Hard 10 12.5%

Question type distribution

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

Subjective 40 50%
MCQ 22 27.5%
Numerical Answer Type (NAT) 15 18.8%
Fill in the blanks 2 2.5%
MSQ 1 1.3%

Subject weightage

Top subjects by unique question coverage.

Chemistry
80 Qs

Most asked topics

Top topics across the included previous year papers.

Physical Chemistry
80 Qs

Subtopic coverage

Top subtopics inside this exact selection.

Some Basic Concepts Of Chemistry
80 Qs

Paper coverage

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

JEE ADVANCED 2023 PAPER 1 ONLINE
1 Qs
JEE ADVANCED 2023 PAPER 2 ONLINE
1 Qs
JEE ADVANCED 2022 PAPER 1 ONLINE
1 Qs
JEE ADVANCED 2022 PAPER 2 ONLINE
1 Qs
JEE ADVANCED 2020 PAPER 1 OFFLINE
1 Qs
JEE ADVANCED 2020 PAPER 2 OFFLINE
1 Qs
JEE ADVANCED 2019 PAPER 2 OFFLINE
2 Qs
JEE ADVANCED 2018 PAPER 2 OFFLINE
1 Qs
JEE ADVANCED 2014 PAPER 1 OFFLINE
2 Qs
IIT JEE 2012 PAPER 1 OFFLINE
1 Qs
IIT JEE 2011 PAPER 1 OFFLINE
1 Qs
IIT JEE 2011 PAPER 2 OFFLINE
1 Qs
IIT JEE 2010 PAPER 1 OFFLINE
1 Qs
IIT JEE 2010 PAPER 2 OFFLINE
1 Qs
IIT JEE 2009 PAPER 1 OFFLINE
1 Qs
IIT JEE 2007 PAPER 2 OFFLINE
1 Qs
IIT JEE 2003 SCREENING
2 Qs
IIT JEE 2003
1 Qs
IIT JEE 2002 SCREENING
1 Qs
IIT JEE 2001 SCREENING
2 Qs
IIT JEE 2001
1 Qs
IIT JEE 1999
2 Qs
IIT JEE 1998
1 Qs
IIT JEE 1996
1 Qs
IIT JEE 1994
3 Qs
IIT JEE 1993
1 Qs
IIT JEE 1992
2 Qs
IIT JEE 1991
5 Qs
IIT JEE 1990
3 Qs
IIT JEE 1989
1 Qs
IIT JEE 1988
3 Qs
IIT JEE 1986
1 Qs
IIT JEE 1985
1 Qs
IIT JEE 1984
1 Qs
IIT JEE 1983
3 Qs
IIT JEE 1982
1 Qs
IIT JEE 1981
2 Qs
IIT JEE 1980
8 Qs
IIT JEE 1979
9 Qs
IIT JEE 1978
7 Qs

Included previous year papers

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

PaperYear / sessionQuestions in this viewOpen
JEE ADVANCED 2023 PAPER 1 ONLINE20231View paper
JEE ADVANCED 2023 PAPER 2 ONLINE20231View paper
JEE ADVANCED 2022 PAPER 1 ONLINE20221View paper
JEE ADVANCED 2022 PAPER 2 ONLINE20221View paper
JEE ADVANCED 2020 PAPER 1 OFFLINE20201View paper
JEE ADVANCED 2020 PAPER 2 OFFLINE20201View paper
JEE ADVANCED 2019 PAPER 2 OFFLINE20192View paper
JEE ADVANCED 2018 PAPER 2 OFFLINE20181View paper
JEE ADVANCED 2014 PAPER 1 OFFLINE20142View paper
IIT JEE 2012 PAPER 1 OFFLINE20121View paper
IIT JEE 2011 PAPER 1 OFFLINE20111View paper
IIT JEE 2011 PAPER 2 OFFLINE20111View paper
IIT JEE 2010 PAPER 1 OFFLINE20101View paper
IIT JEE 2010 PAPER 2 OFFLINE20101View paper
IIT JEE 2009 PAPER 1 OFFLINE20091View paper
IIT JEE 2007 PAPER 2 OFFLINE20071View paper
IIT JEE 200320031View paper
IIT JEE 2003 SCREENING20032View paper
IIT JEE 2002 SCREENING20021View paper
IIT JEE 200120011View paper
IIT JEE 2001 SCREENING20012View paper
IIT JEE 199919992View paper
IIT JEE 199819981View paper
IIT JEE 199619961View paper
IIT JEE 199419943View paper
IIT JEE 199319931View paper
IIT JEE 199219922View paper
IIT JEE 199119915View paper
IIT JEE 199019903View paper
IIT JEE 198919891View paper
IIT JEE 198819883View paper
IIT JEE 198619861View paper
IIT JEE 198519851View paper
IIT JEE 198419841View paper
IIT JEE 198319833View paper
IIT JEE 198219821View paper
IIT JEE 198119812View paper
IIT JEE 198019808View paper
IIT JEE 197919799View paper
IIT JEE 197819787View paper

All Some Basic Concepts Of Chemistry previous year questions

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

1
1978 · Chemistry · Physical Chemistry · Some Basic Concepts Of Chemistry
IIT JEE 1978
Naturally occurring boron consists of two isotopes whose atomic weighs are 10.01 and 11.01. The atomic weight of natural oron is 10.81. Calculate the percentage of each isotope in natural boron.
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2
1978 · Chemistry · Physical Chemistry · Some Basic Concepts Of Chemistry
IIT JEE 1978
What weight of AgCl will be precipitated when a solution containing 4.77 g of NaCl is added to a solution of 5.77g of AgNO3?
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3
1978 · Chemistry · Physical Chemistry · Some Basic Concepts Of Chemistry
IIT JEE 1978
Igniting MnO2 converts it quantitatively to Mn3O4. A sample of pyrolusite is of the following composition : MnO2 80%, SiO2 and other inert constituents 15%, rest being water. The sample is ignited in air to constant weight. What is the percentage of Mn in the ignited sample? [O = 16, Mn = 54.9]
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4
1978 · Chemistry · Physical Chemistry · Some Basic Concepts Of Chemistry
IIT JEE 1978
27 g of Al will react completely with how many grams if oxygen?
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5
1978 · Chemistry · Physical Chemistry · Some Basic Concepts Of Chemistry
IIT JEE 1978
A compound was found to contain nitrogen and oxygen in the ratio 28 gm and 80 gm respectively. The formula of compound is
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6
1978 · Chemistry · Physical Chemistry · Some Basic Concepts Of Chemistry
IIT JEE 1978
One gram of an alloy of aluminium and magnetism when treated with excess of dil. HCl forms magnesium chloride, aluminium chloride and hydrogen. The evolved hydrogen, collected over mercury at \({0^o}C\) has a volume of 1.20 litres at 0.92 atm. pressure. Calculate the composition of the alloy. [H = 1, Mg = 24, Al = 27]
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7
1978 · Chemistry · Physical Chemistry · Some Basic Concepts Of Chemistry
IIT JEE 1978
What is the molarity and molality of a 13% solution (by weight) of sulphuric acid with a density of 1.02 g/ml? To what volume should 100 ml of this acid be diluted in order to prepare a 1.5 N solution?
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8
1979 · Chemistry · Physical Chemistry · Some Basic Concepts Of Chemistry
IIT JEE 1979
5 ml of a gas containing only carbon and hydrogen were mixed with an excess of oxygen (30 ml) and the mixture exploded by means of an electric spark. After the explosion, the volume of the mixed gases remaining was 25 ml. On adding a concentrated solution of potassium hydroxide, the volume further diminished to 15 ml of the residual gas being pure oxygen. All volumes have been reduced to N.T.P. Calculate the molecular formula of the hydrocarbon gas.
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9
1979 · Chemistry · Physical Chemistry · Some Basic Concepts Of Chemistry
IIT JEE 1979
4.215 g of a metallic carbonate was heated in a hard glass tube and the CO2 evolved was found to measure 1336 ml at 27oC and 700 mm pressure. What is the equivalent weight of metal?
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10
1979 · Chemistry · Physical Chemistry · Some Basic Concepts Of Chemistry
IIT JEE 1979

Account for the following : Limit your answer to two sentences.

"Atomic weights of most of the elements are fractional."

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11
1979 · Chemistry · Physical Chemistry · Some Basic Concepts Of Chemistry
IIT JEE 1979
The total number of electrons is one molecule of carbon dioxide is
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12
1979 · Chemistry · Physical Chemistry · Some Basic Concepts Of Chemistry
IIT JEE 1979
A gaseous mixture contains oxygen and nitrogen in the ratio of 1 : 4 by weight. Therefore the ratio of their no of molecules is
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13
1979 · Chemistry · Physical Chemistry · Some Basic Concepts Of Chemistry
IIT JEE 1979
The largest number of molecules is in
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14
1979 · Chemistry · Physical Chemistry · Some Basic Concepts Of Chemistry
IIT JEE 1979
2.76 g of silver carbonate on being strongly heated yields a residue weighing
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15
1979 · Chemistry · Physical Chemistry · Some Basic Concepts Of Chemistry
IIT JEE 1979
In the analysis of 0.5 g sample feldspar, a mixture of chlorides of sodium and potassium is obtained which weighs 0.1180g. Subsequent treatment of mixed chlorides with silver nitrate gives 0.2451 g of silver chloride. What is the percentage of sodium oxide and potassium oxide in feldspar.
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16
1979 · Chemistry · Physical Chemistry · Some Basic Concepts Of Chemistry
IIT JEE 1979
(a). 5.5 g of a mixture FeSO4.7H2O and Fe2(SO4)3.9H2O requires 5.4 ml of 0.1 N KMnO4 solution for complete oxidation. Calculate the number of gram mole of hydrated ferric sulphate in the mixture.

(b). The vapour density (hydrogen = 1) of a mixture consisting of NO2 and N2O4 is 38.3 at 26.7oC. Calculate the number of moles of NO2 in 100 g of the mixure.
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17
1980 · Chemistry · Physical Chemistry · Some Basic Concepts Of Chemistry
IIT JEE 1980
A mixture contains NaCl and unknown chloride MCl.

(i) 1g of this is dissolved in water. Excess of acidified AgNO3 solution is added to it. 2.567 g of white ppt is formed.

(ii) 1 g of original mixture is heated to 300oC. Some vapours come out which are absorbed in acidified AgNO3 solution, 1.341 g of white precipitate was obtained.

Find the molecular weight of unknown chloride.
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18
1980 · Chemistry · Physical Chemistry · Some Basic Concepts Of Chemistry
IIT JEE 1980
(i). A sample of MnSO4.4H2O is strongly heated in air. The residue is Mn3O4.

(ii). The residue is dissolved in 100 ml of 0.1N FeSO4 containing dilute H2SO4.

(iii). The solution reacts completely with 50 ml of KMnO4 solution.

(iv). 25 ml of the KMnO4 solution used in step (iii) requires 30 ml of 0.1 N FeSO4 solution for complete reaction.

Find the amount of MnSO4.4H2O present in the sample.
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19
1980 · Chemistry · Physical Chemistry · Some Basic Concepts Of Chemistry
IIT JEE 1980
The modern atomic unit is based on the mass of ______.
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20
1980 · Chemistry · Physical Chemistry · Some Basic Concepts Of Chemistry
IIT JEE 1980
A hydrocarbon contains 10.5 g of carbon per gram of hydrogen. 1 litre of the hydrocarbon at 127oC and 1 atmosphere weighs 2.8 g. Find the molecular formula.
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