The S Block Elements CBSE Questions & Answers

The S Block Elements

This is Chemistry Class 11 The s Block Elements CBSE Questions & Answers. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
The s-block elements of the Periodic Table have only
  • A
    four groups
  • B
    two groups.
    Correct
  • C
    one group
  • D
    three groups
2
Group I of the periodic Table consists of the elements collectively known as
  • A
    alkaline earth metals.
  • B
    transition elements
  • C
    noble gases
  • D
    alkali metals.
    Correct
3
Group Il of the periodic table with one exception consists of the elements collectively known as
  • A
    alkali metals.
  • B
    transition elements
  • C
    noble gases
  • D
    alkaline earth metals.
    Correct
4
One of the following is not called alkaline earth metal.
  • A
    barium
  • B
    radium.
  • C
    beryllium,
    Correct
  • D
    Strontium
5
Calcium and Magnesium belong to the category of
  • A
    coordination compounds
  • B
    transition elements
  • C
    alkaline earth metals.
    Correct
  • D
    alkali metals.
6
Sodium and potassium belong to the category of
  • A
    alkaline earth metals.
  • B
    alkali metals.
    Correct
  • C
    transition elements
  • D
    noble gases
7
One of the following is highly radioactive
  • A
    Caesium
  • B
    Lithium
  • C
    Francium
    Correct
  • D
    Rubidium
8
The diagonal relationship exists between
  • A
    Lithium and magnesium
    Correct
  • B
    Lithium and aluminium
  • C
    Lithium and beryllium
  • D
    Beryllium and magnesium
9
Increase in ionic sizes in alkali metals is in the following order:
  • A
    \({\text{R}}{{\text{b}}^ + } > {\text{ C}}{{\text{s}}^ + } < {\text{ L}}{{\text{i}}^ + } < {\text{ N}}{{\text{a}}^ + } < {\text{ }}{{\text{K}}^ + }\)
  • B
    \({\text{N}}{{\text{a}}^ + } > {\text{ }}{{\text{K}}^ + } > {\text{ R}}{{\text{b}}^ + } > {\text{ C}}{{\text{s}}^ + } < {\text{ L}}{{\text{i}}^ + }\)
  • C
    \({{\text{K}}^ + } > {\text{ R}}{{\text{b}}^ + } > {\text{ C}}{{\text{s}}^ + } < {\text{ L}}{{\text{i}}^ + } < {\text{ N}}{{\text{a}}^ + }\)
  • D
    \({\text{L}}{{\text{i}}^ + } > {\text{ N}}{{\text{a}}^ + } > {\text{ }}{{\text{K}}^ + } > {\text{ R}}{{\text{b}}^ + } > {\text{ C}}{{\text{s}}^ + }\)
    Correct
10
Monovalent sodium and potassium ions found in large proportions in biological fluids. They help in
  • A
    maintenance of nerve impulse conduction
    Correct
  • B
    maintenance of peristalsis
  • C
    maintenance of cardiac rhythm
  • D
    maintenance of pulse rate
11
The hydration enthalpies of alkali metal ions in the decreasing order is: Choose the appropriate one.
  • A
    \({\text{N}}{{\text{a}}^ + } > {\text{ }}{{\text{K}}^ + } > {\text{ R}}{{\text{b}}^ + } > {\text{ C}}{{\text{s}}^ + } < {\text{ L}}{{\text{i}}^ + }\)
  • B
    \({\text{L}}{{\text{i}}^ + } > {\text{ N}}{{\text{a}}^ + } > {\text{ }}{{\text{K}}^ + } > {\text{ R}}{{\text{b}}^ + } > {\text{ C}}{{\text{s}}^ + }\)
    Correct
  • C
    \({\text{R}}{{\text{b}}^ + } > {\text{ C}}{{\text{s}}^ + } < {\text{ L}}{{\text{i}}^ + } < {\text{ N}}{{\text{a}}^ + } < {\text{ }}{{\text{K}}^ + }\)
  • D
    \({{\text{K}}^ + } > {\text{ R}}{{\text{b}}^ + } > {\text{ C}}{{\text{s}}^ + } < {\text{ L}}{{\text{i}}^ + } < {\text{ N}}{{\text{a}}^ + }\)
12
Divalent magnesium and calcium ions are found in large proportions in biological fluids.
  • A
    maintenance of cardiac rhythm
  • B
    maintenance of peristalsis
  • C
    maintenance of ion balance
    Correct
  • D
    maintenance of pulse rate
13
One of the following is the rarest of all alkaline earth metals
  • A
    Barium
  • B
    Radium
    Correct
  • C
    Strontium
  • D
    Beryllium
14
Among the alkali metals the most abundant are:
  • A
    rubidium and potassium
  • B
    Sodium and lithium
  • C
    rubidium and lithium
  • D
    sodium and potassium
    Correct
15
The general electronic configuration of alkali metals is
  • A
    \({\text{1}}{{\text{s}}^{\text{2}}}\)
  • B
    \({\text{n}}{{\text{s}}^{\text{1}}}\)
    Correct
  • C
    \({\text{n}}{{\text{s}}^{\text{2}}}\)
  • D
    \({\text{1}}{{\text{s}}^{\text{1}}}{\text{2}}{{\text{s}}^{\text{1}}}\)