CHEMISTRY ONLINE TEST 11

1 / 10

Which compound is formed when sodium metal is burnt in excess oxygen?

Na₂O₂

Na₂O

NaO₂

NaOH

2 / 10

BeCl₂ is covalent while BaCl₂ is ionic because —

Be has high ionization energy

Ba has small size

Ba has low ionization enthalpy

Be²⁺ ion has small size and high polarizing power

3 / 10

Which of the following is used to remove permanent hardness of water?

CaCO₃

Na₂CO₃

Mg(OH)₂

Ca(OH)₂

4 / 10

The solubility of hydroxides of Group 2 elements —

Remains constant

First decreases then increases

Decreases down the group

Increases down the group

5 / 10

Slaked lime is —

Cao

Ca(OH)₂

CaCO₃

CaSO₄

6 / 10

Quick lime is —

Ca(OH)₂

CaCO₃

CaO

CaSO₄

7 / 10

Which of the following oxides is amphoteric?

MgO

CaO

SrO

BeO

8 / 10

Which alkali metal reacts most vigorously with water?

Cs

Na

K

Li

9 / 10

Which of the following compounds shows diagonal relationship with magnesium?

Na₂CO₃ and MgCO

Li₂CO₃ and MgCO₃

K₂CO₃ and MgCO

Rb₂CO₃ and MgCO₃

10 / 10

The anomalous behavior of lithium is due to —

Its small size and high polarizing power

Its high atomic mass

Presence of d-orbitals

Low ionization enthalpy

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CHEMISTRY ONLINE TEST 11

Chemistry online test 11 for JEE NEET AND EAPCET EXAMS.

About Saheb Shaik