S Block Elements - Inorganic Chemistry - Chemistry Previous Year Questions

1

2017 · Chemistry · Inorganic Chemistry · S Block Elements

KCET 2017

Which of the following metallic oxide exhibit amphoteric nature?

A

CaO

B

$\mathrm{Al}_2 \mathrm{O}_3$

C

$\mathrm{Na}_2 \mathrm{O}$

D

BaO

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2

2018 · Chemistry · Inorganic Chemistry · S Block Elements

KCET 2018

Very pure $\mathrm{N}_2$ can be obtained by

A

thermal decomposition of ammonium dichromate

B

treating aqueous solution of $\mathrm{NH}_4 \mathrm{Cl}$ and $\mathrm{NaNO}_2$

C

liquefaction and fractional distillation of liquid air

D

thermal decomposition of sodium azide

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3

2018 · Chemistry · Inorganic Chemistry · S Block Elements

KCET 2018

Dead burnt plaster is

A

$\mathrm{CaSO}_4$

B

$\mathrm{CaSO}_4 \cdot \frac{1}{2} \mathrm{H}_2 \mathrm{O}$

C

$\mathrm{CaSO}_4 \cdot \mathrm{H}_2 \mathrm{O}$

D

$\mathrm{CaSO}_4 \cdot 2 \mathrm{H}_2 \mathrm{O}$

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4

2019 · Chemistry · Inorganic Chemistry · S Block Elements

KCET 2019

Which cleansing agent gets precipitated in hard water?

A

Sodium lauryl sulphate

B

Sodium stearate

C

Cetyl trimethyl ammonium bromide

D

Sodium dodecyl benzene sulphonate

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5

2020 · Chemistry · Inorganic Chemistry · S Block Elements

KCET 2020

The oxide of potassium that does not exist is

A

\(\mathrm{K}_2 \mathrm{O}\)

B

\(\mathrm{KO}_2\)

C

\(\mathrm{K}_2 \mathrm{O}_2\)

D

\(\mathrm{K}_2 \mathrm{O}_3\)

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6

2020 · Chemistry · Inorganic Chemistry · S Block Elements

KCET 2020

The metal that produce \(\mathrm{H}_2\) with both dil. \(\mathrm{HCl}\) and \(\mathrm{NaOH}(a q)\) is

A

\(\mathrm{Zn}\)

B

\(\mathrm{Mg}\)

C

\(\mathrm{Ca}\)

D

\(\mathrm{Fe}\)

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7

2021 · Chemistry · Inorganic Chemistry · S Block Elements

KCET 2021

The property of the alkaline earth metals that increases with their atomic number is

A

ionisation enthalpy

B

electronegativity

C

solubility of their hydroxide in water

D

solubility of their sulphate in water

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8

2024 · Chemistry · Inorganic Chemistry · S Block Elements

KCET 2024

Which one of the following nitrate will decompose to give $\mathrm{NO}_2$ on heating ?

A

$\mathrm{NaNO}_3$

B

$\mathrm{KNO}_3$

C

$\mathrm{RbNO}_3$

D

$\mathrm{LiNO}_3$

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