Download App

-p-Block elements - I — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry-p-Block elements - I1 Mark
MCQ
Lead pipes are not suitable for drinking water because
  • A
    A layer of lead dioxide is deposited over pipes
  • B
    Lead reacts with air to form litharge
  • ✓
    Lead reacts with water containing air to form $Pb{(OH)_2}$
  • D
    Lead forms basic lead carbonate
✓

Answer

Correct option: C.
Lead reacts with water containing air to form $Pb{(OH)_2}$
c
Lead pipes are not suitable for drinking water because Lead reacts will water containing air to form $Pb ( OH )_2$ which is poisonous for our health.

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 -p-Block elements - I→-p-Block elements - I — 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 series correctly represents relations between the elements from $X$ to $Y$ ? $X \to Y$
→
Benzene $ + {(C{H_3}CO)_2}O\xrightarrow{{AlC{l_3}}}X\xrightarrow[{HCl}]{{Zn - Hg}}Y\xrightarrow{{NBS}}Z\,;$ 

$Z$ is

→
Elements of which of the following group$(s)$ of periodic table do not form hydrides?
→
Consider the following reversible reaction at equilibrium, $2{H_2}{O_{(g)}}$ $\rightleftharpoons$ $2{H_{2(g)}} + {O_{2(g)}}$; $\Delta H = 241.7\,kJ$ Which one of the following changes in conditions will lead to maximum decomposition of ${H_2}{O_{(g)}}$
→
The $3^{rd}$ ionisation energy amongst $Li, Be, B$ and $C$ is lowest for
→
If $S$ and ${K_{sp}}$ are respectively solubility and solubility product of a sparingly soluble binary electrolyte, then
→
Which of following is most reactive compound toward nucleophile ?
→
$\begin{matrix}
   ONa\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
   |\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
   C{{H}_{3}}-C=C{{H}_{2}}\xrightarrow{HC\equiv CH}\xrightarrow{{{H}^{+}}}\xrightarrow[Pd-BaS{{O}_{4}}]{{{H}_{2}}}\xrightarrow[\Delta ]{A{{l}_{2}}{{O}_{3}}}  \\
\end{matrix}$

End product of the reaction is

→
Assign $A, B, C, D$ from given type of reaction. $NaN{O_3}\xrightarrow{\Delta }NaN{O_2} + {O_2}$
→
Precipitation of an electrolyte will occur when its ionic product is:
→