S-Block Elements Test

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S-Block Elements Test - 22

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Weekly Quiz Competition

Question 1
4 / -1

The basic character of the oxides MgO, SrO, K₂O, NiO and Cs₂O increases in the order :

A
MgO > SrO > K₂O > NiO > Cs₂O

B
Cs₂O < K₂O < MgO < SrO < NiO

C
NiO < MgO < SrO < K₂O < Cs₂O

D
K₂O < NiO < MgO < SrO < Cs₂O
Question 2
4 / -1

Which of the following are arranged in increasing order of solubilities ?

A
CaCO₃ < KHCO₃ < NaHCO₃

B
NaHCO₃ < KHCO₃ < CaCO₃

C
KHCO₃ < NaHCO₃ < CaCO₃

D
CaCO₃ < NaHCO₃ < KHCO₃
Question 3
4 / -1

The compound insoluble in acetic acid is ...

A
Calcium oxide

B
Calcium carbonate

C
Calcium oxalate

D
Calcium hydroxide
Question 4
4 / -1

The correct order of decreasing ionic character is ...

A
BeCl₂ > MgCl₂ > CaCl₂ > BaCl₂

B
BeCl₂ > MgCl₂ > BaCl₂ > CaCl₂

C
BeCl₂ > BaCl₂ > MgCl₂ > CaCl₂

D
BaCl₂ > CaCl₂ > MgCl₂ > BeCl₂
Question 5
4 / -1

How many of the following s -block elements do not give characteristic colours in the flame test ?
Li , Be, Ca, Ba, Sr, Mg, Na, K, Ba

A
3

B
4

C
2

D
5
Question 6
4 / -1

How many of the following sulphates of metals dissolve in the water ?
SrSO₄, K₂SO₄, BeSO₄, Li₂SO₄, MgSO₄, BaSO₄, Na₂SO₄, CaSO₄, Rb₂SO₄

A
6

B
4

C
3

D
5
Question 7
4 / -1

How many of the following hydroxides is/are amphoteric in character ?
CsOH, LiOH, Ca(OH)₂, Be(OH)₂, Mg(OH)₂, Sr(OH)₂, Ba(OH)₂, KOH, NaOH.

A
1

B
4

C
5

D
3
Question 8
4 / -1

Which of the following is not correct for work function of Na⁺ ions in human body ?

A
An important role in nerve signal transmission

B
Control of flow of water between cell membrane

C
For transport of sugar and amino acid in cell

D
They activate the enzyme
Question 9
4 / -1

Which of the following is not correct ?

A

B

C

D
Question 10
4 / -1

Which of the following statements is/are correct for “when alkali metals are dissolved in liquid ammonia. We get...”

A
A blue solution in case of dilute alkali metal ammonia solution.

B
If we increase cocentration of metal in ammonia then the blue colour starts changing and finally changes to that of bronze colour.

C
The blue colour of the solution of alkali metal in liquid ammonia is due to excitation of free ammoniated electrons to higher energy levels.

D
All the above are correct.

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S-Block Elements Test - 22

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S-Block Elements Test - 22

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Question 1

MgO > SrO > K2O > NiO > Cs2O

Cs2O < K2O < MgO < SrO < NiO

NiO < MgO < SrO < K2O < Cs2O

K2O < NiO < MgO < SrO < Cs2O

Question 2

CaCO3 < KHCO3 < NaHCO3

NaHCO3 < KHCO3 < CaCO3

KHCO3 < NaHCO3 < CaCO3

CaCO3 < NaHCO3 < KHCO3

Question 3

Calcium oxide

Calcium carbonate

Calcium oxalate

Calcium hydroxide

Question 4

BeCl2 > MgCl2 > CaCl2 > BaCl2

BeCl2 > MgCl2 > BaCl2 > CaCl2

BeCl2 > BaCl2 > MgCl2 > CaCl2

BaCl2 > CaCl2 > MgCl2 > BeCl2

Question 5

3

4

2

5

Question 6

6

4

3

5

Question 7

1

4

5

3

Question 8

An important role in nerve signal transmission

Control of flow of water between cell membrane

For transport of sugar and amino acid in cell

They activate the enzyme

Question 9

Question 10

A blue solution in case of dilute alkali metal ammonia solution.

If we increase cocentration of metal in ammonia then the blue colour starts changing and finally changes to that of bronze colour.

The blue colour of the solution of alkali metal in liquid ammonia is due to excitation of free ammoniated electrons to higher energy levels.

All the above are correct.

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MgO > SrO > K₂O > NiO > Cs₂O

Cs₂O < K₂O < MgO < SrO < NiO

NiO < MgO < SrO < K₂O < Cs₂O

K₂O < NiO < MgO < SrO < Cs₂O

CaCO₃ < KHCO₃ < NaHCO₃

NaHCO₃ < KHCO₃ < CaCO₃

KHCO₃ < NaHCO₃ < CaCO₃

CaCO₃ < NaHCO₃ < KHCO₃

BeCl₂ > MgCl₂ > CaCl₂ > BaCl₂

BeCl₂ > MgCl₂ > BaCl₂ > CaCl₂

BeCl₂ > BaCl₂ > MgCl₂ > CaCl₂

BaCl₂ > CaCl₂ > MgCl₂ > BeCl₂