The S-Block Elements NDA Questions

NDA Chemistry

The S-Block Elements MCQ Questions


1.
The elements of Group 1 and Group 2 of the periodic table are collectively known as the:
A.
s-Block elements
B.
d-Block elements
C.
p-Block elements
D.
f-Block elements
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ANSWER :
A. s-Block elements
2.
The general electronic configuration of the outermost shell of Group 1 elements (alkali metals) is:
A.
ns²np¹
B.
ns²np⁶
C.
ns²
D.
ns¹
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ANSWER :
D. ns¹
3.
The general electronic configuration of the outermost shell of Group 2 elements (alkaline earth metals) is:
A.
ns²np¹
B.
ns²
C.
ns²np⁶
D.
ns¹
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ANSWER :
B. ns²
4.
Which of the following is NOT classified as an alkali metal (Group 1 element)?
A.
Beryllium (Be)
B.
Sodium (Na)
C.
Lithium (Li)
D.
Potassium (K)
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ANSWER :
A. Beryllium (Be)
5.
Which of the following elements is NOT an alkaline earth metal (Group 2 element)?
A.
Calcium (Ca)
B.
Magnesium (Mg)
C.
Barium (Ba)
D.
Rubidium (Rb)
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ANSWER :
D. Rubidium (Rb)
6.
Alkali metals are named so because their hydroxides are:
A.
Strongly acidic in nature
B.
Strongly alkaline (basic) and soluble in water
C.
Insoluble in water
D.
Neutral in aqueous solution
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ANSWER :
B. Strongly alkaline (basic) and soluble in water