MCQ
Which of the following elements forms a strongly acidic oxide
  • $P$
  • B
    $As$
  • C
    $Sb$
  • D
    $Bi$

Answer

Correct option: A.
$P$
a
(a) Acidic character of oxides decreases down the group.

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

Similar questions

For fastest rate of reaction, $X_2$ must be
Given below are two statements :

Statement $(I)$ : $\mathrm{S}_{\mathrm{N}} 2$ reactions are 'stereospecific', indicating that they result in the formation only one stereo-isomers as the product.

Statement $(II)$ : $\mathrm{S}_N 1$ reactions generally result in formation of product as racemic mixtures. In the light of the above statements, choose the correct answer from the options given below :

$K{O_2} + C{O_2} \to ?$ (gas)
Consider the following sequence of reactions

The end product $(C)$ is

Ethyl alcohol on oxidation with ${K_2}C{r_2}{O_7}$ gives
Given below are two statements. One is labelled as Assertion $A$ and the other is labelled as Reason $R$.

Assertion $A$: Amylose is insoluble in water.

Reason $R$: Amylose is a long linear molecule with more than $200$ glucose units.

In the light of the above statements, choose the correct answer from the options given below.

If reaction between $A$ and $B$ to give $C$shows first order kinetics in $A$ and second order in $B$, the rate equation can be written as
Which of the following represent free radical substitution reaction $(FSR)$, electrophilic addition reaction $(EAR)$ and nucleophilic addition reaction $(NAR)$

$I.$ $CH_3 -CH = CH_2$ $\xrightarrow[{{\text{(CC}}{{\text{l}}_4}{\text{ )}}}]{{{\text{C}}{{\text{l}}_2}}}$ $\begin{array}{*{20}{c}}
{Cl\,\,}\\
{\,\,|\,\,\,\,\,}\\
{C{H_3} - CH - C{H_2}}\\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|}\\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,Cl}
\end{array}$

$II.$ $\begin{array}{*{20}{c}}
O\\
{||}\\
{C{H_3} - C - C{H_3}}
\end{array}$ $\xrightarrow[{{}^\Theta OH}]{{{\text{HCN}}}}$ $\begin{array}{*{20}{c}}
{\,\,\,\,\,OH}\\
|\\
{C{H_3} - C - C{H_3}}\\
|\\
{\,\,\,\,\,CN}
\end{array}$

$III.$ $CH_3-CH_2-CH_3$ $\xrightarrow[{hv}]{{C{l_2}}}$ $\begin{array}{*{20}{c}}
{Cl\,\,}\\
{|\,\,\,\,}\\
{C{H_3} - CH - C{H_3}}
\end{array}$

Which is the most explosive
In the viscose process the solvent for cellulose consists of