Download App

3. Classification of elements and periodicity in properties — Chemistry STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistry3. Classification of elements and periodicity in properties1 Mark
MCQ
Which of the following is different from other three oxides?
  • A
    $MgO$
  • B
    $SnO$
  • ✓
    $ZnO$
  • D
    $PbO$
✓

Answer

Correct option: C.
$ZnO$
c
In $II'A'$ group density decreases down the group till $Ca$ and after that it increases.Correct order of density is $Sr > Be > Mg > Ca$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from 3. Classification of elements and periodicity in properties→3. Classification of elements and periodicity in properties — all question types→Chemistry STD 11 Science question papers→Rajasthan Board STD 11 Science question papers→Rajasthan Board question paper generator→

Similar questions

Oxygen has oxidation states of $ +2 $ in the
→
Which of the following order can't be explained by back bonding ?
→
Which of the following is always negative for exothermic reaction?
→
Which of the following cation can not give borax bead test ?
→
The formation of hydrogen molecule takes place when:
→
Which of the following solution becomes blue in colour when rod of copper had put in it?
→
The value of $\log\,K$ for the reaction $A \leftrightharpoons B$ at $298\,K$ is (Nearest integer)

Given: $\Delta H ^0=-54.07\,kJ\,mol ^{-1}$

$\Delta S ^{\circ}=10\,JK ^{-1}\,mol ^{-1}$

(Take $2.303 \times 8.314 \times 298=5705$ )

→
Which of the following sublimes on heating?
→
Which of the following bonds require the largest amount of bond energy to dissociate the atom concerned
→
Which is the correct order of increasing energy of the listed orbitals in the atom of titanium? (At. no. $Z = 22$)
→