S-Block Elements Test

Question 1
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Lithium and Beryllium differ from other elements of their groups. The solubility of the ionic compounds depends upon lattice enthalpy and hydration energy. Smaller cations have greater hydration enthalpy. The salts of alkaline earth metals are extensively hydrated. Now, answer the given questions (i) to (iv):
Q. The order of solubility of lithium halide in polar solvents is:

A
A. LiI > LiBr > LiCl > LiF

B
B. LiF > LiCl > LiBr > LiI

C
C. LiCl > LiBr > LiI > LiF

D
D. None of these

Question 2
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Lithium and Beryllium differ from other elements of their groups. The solubility of the ionic compounds depends upon lattice enthalpy and hydration energy. Smaller cations have greater hydration enthalpy. The salts of alkaline earth metals are extensively hydrated. Now, answer the given questions (i) to (iv):
Q. The incorrect trend in alkali metal is

A
A. Hydration energy – Li > Na > K > Rb

B
B. Ionisation energy – Li > Na > K > Rb

C
C. Density – Li < Na < K < Rb

D
D. Atomic size – Li < Na < K < Rb

Question 3
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Lithium and Beryllium differ from other elements of their groups. The solubility of the ionic compounds depends upon lattice enthalpy and hydration energy. Smaller cations have greater hydration enthalpy. The salts of alkaline earth metals are extensively hydrated. Now, answer the given questions (i) to (iv):
Q. The hydroxide which has maximum solubility in water?

A
A. Ba(OH)₂

B
B. Mg(OH)₂

C
C. Ca(OH)₂

D
D. Be(OH)₂

Question 4
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Lithium and Beryllium differ from other elements of their groups. The solubility of the ionic compounds depends upon lattice enthalpy and hydration energy. Smaller cations have greater hydration enthalpy. The salts of alkaline earth metals are extensively hydrated. Now, answer the given questions (i) to (iv):
Q. Which of the following forms only the normal oxide M₂O on heating in air?

A
A. Rb

B
B. K

C
C. Li

D
D. Na

Question 5
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The lighter alkaline earth metals are very important in animal and plant physiology. Magnesium functions as the active center in some enzymes and calcium salts take a structural role in bones. The alkaline earth metals have the second lowest first ionisation energies in their respective periods. The ions of these elements perform important biological functions like maintenance of ion balance and nerve impulse conduction. The given questions (i) to (iv) consist of an assertion (A) and reason (R). Choose the correct option.
Assertion: The second ionisation enthalpies of the alkaline earth metals are smaller than the metals.
Reason: The second electron is to be removed from the cation have inert gas configuration.

A
A. A and R both are correct and R is the correct explanation of A.

B
B. A and R both are correct but R is not the correct explanation of A.

C
C. A is true but R is false.

D
D. A is false but R is true.

Question 6
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The lighter alkaline earth metals are very important in animal and plant physiology. Magnesium functions as the active center in some enzymes and calcium salts take a structural role in bones. The alkaline earth metals have the second lowest first ionisation energies in their respective periods. The ions of these elements perform important biological functions like maintenance of ion balance and nerve impulse conduction. The given questions (i) to (iv) consist of an assertion (A) and reason (R). Choose the correct option.
Assertion: Be and Mg impart colour to the flame.
Reason: They have high ionisation energies.

A
A. A and R both are correct and R is the correct explanation of A.

B
B. A and R both are correct but R is not the correct explanation of A.

C
C. A is true but R is false.

D
D. A is false but R is true.

Question 7
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The lighter alkaline earth metals are very important in animal and plant physiology. Magnesium functions as the active center in some enzymes and calcium salts take a structural role in bones. The alkaline earth metals have the second lowest first ionisation energies in their respective periods. The ions of these elements perform important biological functions like maintenance of ion balance and nerve impulse conduction. The given questions (i) to (iv) consist of an assertion (A) and reason (R). Choose the correct option.
Assertion: Calcium help in neuromuscular function.
Reason: All Calcium passes through the plasma.

A
A. A and R both are correct and R is the correct explanation of A.

B
B. A and R both are correct but R is not the correct explanation of A.

C
C. A is true but R is false.

D
D. A is false but R is true.

Question 8
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The lighter alkaline earth metals are very important in animal and plant physiology. Magnesium functions as the active center in some enzymes and calcium salts take a structural role in bones. The alkaline earth metals have the second lowest first ionisation energies in their respective periods. The ions of these elements perform important biological functions like maintenance of ion balance and nerve impulse conduction. The given questions (i) to (iv) consist of an assertion (A) and reason (R). Choose the correct option.
Assertion: Alkaline earth metals are reducing agents.
Reason: They have low ionisation enthalpies and high negative values of E°.

A
A. A and R both are correct and R is the correct explanation of A.

B
B. A and R both are correct but R is not the correct explanation of A.

C
C. A is true but R is false.

D
D. A is false but R is true.

Submit Test

S-Block Element...

Question 1

A. LiI > LiBr > LiCl > LiF

B. LiF > LiCl > LiBr > LiI

C. LiCl > LiBr > LiI > LiF

D. None of these

Question 2

A. Hydration energy – Li > Na > K > Rb

B. Ionisation energy – Li > Na > K > Rb

C. Density – Li < Na < K < Rb

D. Atomic size – Li < Na < K < Rb

Question 3

A. Ba(OH)2

B. Mg(OH)2

C. Ca(OH)2

D. Be(OH)2

Question 4

A. Rb

B. K

C. Li

D. Na

Question 5

A. A and R both are correct and R is the correct explanation of A.

B. A and R both are correct but R is not the correct explanation of A.

C. A is true but R is false.

D. A is false but R is true.

Question 6

A. A and R both are correct and R is the correct explanation of A.

B. A and R both are correct but R is not the correct explanation of A.

C. A is true but R is false.

D. A is false but R is true.

Question 7

A. A and R both are correct and R is the correct explanation of A.

B. A and R both are correct but R is not the correct explanation of A.

C. A is true but R is false.

D. A is false but R is true.

Question 8

A. A and R both are correct and R is the correct explanation of A.

B. A and R both are correct but R is not the correct explanation of A.

C. A is true but R is false.

D. A is false but R is true.

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Question Analysis

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A. Ba(OH)₂

B. Mg(OH)₂

C. Ca(OH)₂

D. Be(OH)₂