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Previous year question hub

Some S Block Elements - Inorganic Chemistry - Chemistry Previous Year Questions

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

7Papers
7Years
12Questions
1Topics

Some S Block Elements question pattern

Every graph below is calculated only from this selection.

Questions by year

Year-wise coverage for Some S Block Elements. Each bar uses a separate theme-derived color.

Difficulty distribution

How the classified questions are distributed by difficulty.

Not classified 12 100%

Question type distribution

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

Multiple Choices 12 100%

Subject weightage

Top subjects by unique question coverage.

Chemistry
12 Qs

Most asked topics

Top topics across the included previous year papers.

Inorganic Chemistry
12 Qs

Subtopic coverage

Top subtopics inside this exact selection.

Some S Block Elements
12 Qs

Paper coverage

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

WB JEE 2023
1 Qs
WB JEE 2022
3 Qs
WB JEE 2021
2 Qs
WB JEE 2020
1 Qs
WB JEE 2019
2 Qs
WB JEE 2018
1 Qs
WB JEE 2017
2 Qs

Included previous year papers

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

PaperYear / sessionQuestions in this viewOpen
WB JEE 202320231View paper
WB JEE 202220223View paper
WB JEE 202120212View paper
WB JEE 202020201View paper
WB JEE 201920192View paper
WB JEE 201820181View paper
WB JEE 201720172View paper

All Some S Block Elements previous year questions

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

1
2017 · Chemistry · Inorganic Chemistry · Some S Block Elements
WB JEE 2017
Which of the following solutions will turn violet when a drop of lime juice is added to it?
A
A solution of NaI
B
A solution mixture of KI and NaIO3
C
A solution mixture of NaI and KI
D
A solution mixture of KIO3 and NaIO3
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2
2017 · Chemistry · Inorganic Chemistry · Some S Block Elements
WB JEE 2017
During electrolysis of molten NaCl, some water was added. What will happen?
A
Electrolysis will stop
B
Hydrogen will be evolved
C
Some amount of caustic soda will be formed
D
A fire is likely
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3
2018 · Chemistry · Inorganic Chemistry · Some S Block Elements
WB JEE 2018
Which of the following is least thermally stable?
A
MgCO3
B
CaCO3
C
SrCO3
D
BeCO3
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4
2019 · Chemistry · Inorganic Chemistry · Some S Block Elements
WB JEE 2019
The compound, which evolves carbon dioxide on treatment with aqueous solution of sodium bicarbonate at 25\(^\circ\)C, is
A
C6H5OH
B
CH3COCl
C
CH3CONH2
D
CH3COOC2H5
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5
2019 · Chemistry · Inorganic Chemistry · Some S Block Elements
WB JEE 2019
The reactive species in chlorine bleach is
A
Cl2O
B
OCl\(-\)
C
ClO2
D
HCl
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6
2020 · Chemistry · Inorganic Chemistry · Some S Block Elements
WB JEE 2020
In the extraction of Ca by electro reduction of molten CaCl2 some CaF2 is added to the electrolyte for the following reason :
A
To keep the electrolyte in liquid state at temperature lower than the m.p. of CaCl2
B
To effect precipitation of Ca
C
To effect the electrolysis at lower voltage
D
To increase the current efficiency
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7
2021 · Chemistry · Inorganic Chemistry · Some S Block Elements
WB JEE 2021
The white precipitate (Y), obtained on passing colorless and odourless gas (X) through an ammoniacal solution of NaCl, losses about 37% of its weight on heating and a white residue (Z) of basic nature is left. Identify (X), (Y) and (Z) from following sets.
A
(X) (Y) (Z)
\({N_2}\) \({(N{H_4})_2}C{O_3}\) \(N{H_4}Cl\)
B
(X) (Y) (Z)
\({O_2}\) \(NaN{H_4}C{O_3}\) \(NaHC{O_3}\)
C
(X) (Y) (Z)
\(C{O_2}\) \(N{H_4}HC{O_3}\) \({(N{H_4})_2}C{O_3}\)
D
(X) (Y) (Z)
\(C{O_2}\) \(NaHC{O_3}\) \(N{a_2}C{O_3}\)
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8
2021 · Chemistry · Inorganic Chemistry · Some S Block Elements
WB JEE 2021
Indicate the products (X) and (Y) in the following reactions

Na2S + nS(n = 1 \(-\) 8) \(\to\) (X)

Na2SO3 + S \(\to\) (Y)
A
(X) (Y)
\(N{a_2}{S_2}{O_3}\) \(N{a_2}{S_2}\)
B
(X) (Y)
\(N{a_2}{S_{(n + 1)}}\) \(N{a_2}{S_2}{O_3}\)
C
(X) (Y)
\(N{a_2}{S_n}\) \(N{a_2}{S_2}{O_3}\)
D
(X) (Y)
\(N{a_2}{S_5}\) \(N{a_2}{S_2}{O_4}\)
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9
2022 · Chemistry · Inorganic Chemistry · Some S Block Elements
WB JEE 2022

To a solution of colourless sodium salt, a solution of lead nitrate was added to have a white precipitate which dissolves in warm water and reprecipitates on cooling. Which of the following acid radical is present in the salt?

A
Cl\(-\)
B
SO\(_4^{2 - }\)
C
S2\(-\)
D
NO\(_3^{ - }\)
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10
2022 · Chemistry · Inorganic Chemistry · Some S Block Elements
WB JEE 2022

A sample of MgCO3 is dissolved in dil. HCl and the solution is neutralized with ammonia and buffered with NH4Cl / NH4OH. Disodium hydrogen phosphate reagent is added to the resulting solution. A white precipitate is formed. What is the formula of the precipitate?

A
Mg3(PO4)2
B
Mg(NH4)PO4
C
MgHPO4
D
Mg2P2O7
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11
2022 · Chemistry · Inorganic Chemistry · Some S Block Elements
WB JEE 2022

The correct statement(s) about B2H6 is /are :

A
All B atoms are sp3 hybridised.
B
It is paramagnetic.
C
It contains 3C - 4C bonding.
D
There are two types of H present.
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12
2023 · Chemistry · Inorganic Chemistry · Some S Block Elements
WB JEE 2023

Na\(_2\)CO\(_3\) is prepared by Solvay process but K\(_2\)CO\(_3\) cannot be prepared by the same because

A
K\(_2\)CO\(_3\) is highly soluble in H\(_2\)O
B
KHCO\(_3\) is sparingly soluble
C
KHCO\(_3\) is appreciably soluble
D
KHCO\(_3\) decomposes
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