1. ⇒ (MHT CET 2023 12th May Morning Shift )

Which element from following exhibits diagonal relationship with $Mg$ ?

A. Be

B. Li

C. Na

D. B

Correct Option is (B)

Currently no explanation available

2. ⇒ (MHT CET 2023 11th May Evening Shift )

Identify the element having general electronic configuration ${ns}^{1}$ from following.

A. $Ca$

B. $Sr$

C. $Ba$

D. $Fr$

Correct Option is (D)

The general electronic configuration ${ns}^{1}$ is of group 1 elements. Among the given elements, francium (Fr) belongs to group 1.

3. ⇒ (MHT CET 2023 11th May Morning Shift )

Which of the following is a property of alkali metals?

A. High density

B. Compounds are paramagnetic

C. Form dipositive ions only

D. Most electropositive elements

Correct Option is (D)

Alkali metals are the most electropositive elements and have low density. Alkali metals can lose their one valence shell electron and form unipositive ions with no unpaired electrons. Hence, they form diamagnetic compounds.

4. ⇒ (MHT CET 2023 10th May Evening Shift )

Which from following compounds is obtained when carbon dioxide gas bubbled through slaked lime solution?

A. ${CaCO}_{3 (s)}$

B. ${CaCl}_{2 (aq)}$

C. ${CaSO}_{4 (s)}$

D. ${NaCl}_{(aq)}$

Correct Option is (A)

When carbon dioxide is bubbled through solution of calcium hydroxide (slaked lime), water insoluble solid calcium carbonate is formed.

$Ca (OH)_{2 (aq)} + {CO}_{2 (g)} \to {CaCO}_{3 (s)} + H_{2} O_{(l)}$

5. ⇒ (MHT CET 2023 10th May Morning Shift )

Which among the following statements of group-1 elements is NOT true?

A. Unipositive ions have inert gas configuration.

B. Compounds of unipositive ions are paramagnetic.

C. These form colourless compounds in +1 state.

D. These have high negative values of standard reduction potential.

Correct Option is (B)

Currently no explanation available

⇒s-Block Elements