Chemistry Mcqs

NaOH is named as caustic soda because________________?

• (A)  It corrodes the organic tissues
• (B)  It is used in soda water
• (C)  It reacts with chlorine gas
• (D)  It reacts with fats to form soap

Answer

Submitted By :Ali Uppal

Second ionization potential of alkali metals are very high due to_______________?

• (A)  being s-block elements
• (B)  inert gas configurations
• (C)  ns1 electronic configuration
• (D)  being metals

Answer

Submitted By :Ali Uppal

Magnesium metal does not burn in the vessel containing_______________?

• (A)  N2
• (B)  O2
• (C)  N2 and O2
• (D)  Ne

Answer

Submitted By :Ali Uppal

Sodium is not observed in +2 oxidation state because of its__________________?

• (A)  high first ionization potential
• (B)  high second ioniation potential
• (C)  high ionic radius
• (D)  high electronegativity

Answer

Submitted By :Ali Uppal

Which one of the following pairs shown diagonal relationship in the periodic table ?

• (A)  Sodium and Lithium
• (B)  Lithium and magnesium
• (C)  Lithium and beryllium
• (D)  Boron and Beryllium

Answer

Submitted By :Ali Uppal

Which one of the following alkali metals forms only normal oxide when it reacts with O2 ?

• (A)  Lithium
• (B)  Sodium
• (C)  Potassium
• (D)  Rubidium

Answer

Submitted By :Ali Uppal

Gypsum is applied to the soil as a source of________________?

• (A)  Ca and P
• (B)  S and P
• (C)  Ca and S
• (D)  we could not apply

Answer

Submitted By :Ali Uppal

In diaphragm cell hydrogen is discharged by the reduction of__________________?

• (A)  Water
• (B)  HCI
• (C)  Na+
• (D)  NaCl

Answer

Submitted By :Ali Uppal

Which one of the following carbonate is water insoluble ?

• (A)  Na2CO3
• (B)  K2CO3
• (C)  (NH4)2CO3
• (D)  CaCO3

Answer

Submitted By :Ali Uppal

Which one of the following substances conducts electricity by the movement of ions ?

• (A)  Graphite
• (B)  Copper
• (C)  Molten sodium chloride
• (D)  Mercury

Answer

Submitted By :Ali Uppal