Download App

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

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry3. Classification of elements and periodicity in properties1 Mark
MCQ
Which one of the following orders presents the correct sequence of the increasing basic nature of the given oxides ?
  • ✓
    $Al_2O_3 < MgO < Na_2O < K_2O$
  • B
    $MgO < K_2O < Al_2O_3  < Na_2O$
  • C
    $Na_2O < K_2O < MgO < Al_2O_3 $
  • D
    $K_2O < Na_2O < Al_2O_3 < MgO$
✓

Answer

Correct option: A.
$Al_2O_3 < MgO < Na_2O < K_2O$
a
$\mathop {VO_2^ \oplus }\limits^{ + 5} ,\,\mathop {C{r_2}O_7^{2 - }}\limits^{ + 6} ,\,\mathop {MnO_4^\Theta }\limits^{ + 7} $

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→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

Which of the following has minimum reactivity towards nucleophiles ?
→
When an electron makes a transition from $(n+1)$ state to $n^{th}$ state the frequency of emitted radiations is related to $n$ according to $(n > > 1)$
→
Which of the following compounds will exhibit geometrical isomerism?
→
What is the correct $IUPAC$ name for  $C{{H}_{3}}-\underset{C{{H}_{3}}}{\mathop{\underset{|\,\,\,\,}{\mathop{\overset{H\,\,\,}{\mathop{\overset{|\,\,\,\,\,}{\mathop{C-}}\,}}\,}}\,}}\,CH=CH-C{{H}_{2}}-\overset{O\,\,\,\,}{\mathop{\overset{||\,\,\,\,}{\mathop{C-}}\,}}\,OH$
→
Which of following do not exist
→
Which of the following statement is correct about ionization potential?
→
Fusion of $MnO _2$ with $KOH$ in presence of $O _2$ produces a salt $W$. Alkaline solution of $W$ upon eletrolytic oxidation yields another salt $X$. The manganese containing ions present in $W$ and $X$, respectively, are $Y$ and $Z$. Correct statement($s$) is (are)

$(1)$ $Y$ is diamagnetic in nature while $Z$ is paramagnetic

$(2)$ Both $Y$ and $Z$ are coloured and have tetrahedral shape

$(3)$ In both $Y$ and $Z , \pi$-bonding occurs between $p$-orbitals of oxygen and $d$-orbitals of manganese.

$(4)$ In aqueous acidic solution, $Y$ undergoes disproportionation reaction to give $Z$ and $MnO _2$.

→
$24\, g\, Mg$ metal reacts with water, then how many moles of $H_2$ will be liberated  ............. $\mathrm{mol}$
→
Which one of the following molecules has maximum dipole moment?
→
The standard heats of formation in $kcal$ $mo{l^{ - 1}}$ of $N{O_2}(g)$ and ${N_2}{O_4}(g)$ are $8.0$  and $2.0 $ respectively. The heat of dimerization of $N{O_2}$ in $kcal$ is $2N{O_2}(g) = {N_2}{O_4}(g)$
→