Download App

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

Gujarat BoardEnglish MediumSTD 11 ScienceJEESTD 11 -p-Block elements - I4 Marks
MCQ
When Conc. $H_2SO_4$ is added to charcoal :-
  • A
    There is no reaction
  • B
    Water gas is formed
  • ✓
    $SO_2$ and $CO_2$ are evolved
  • D
    $CO$ and $SO_2$ are evolved
✓

Answer

Correct option: C.
$SO_2$ and $CO_2$ are evolved
c
To a piece of charcoal sulfuric acid is added. Then $\mathrm{CO}_{2}$ and $\mathrm{SO}_{2}$ are evolved.

$\mathrm{C}+2 \mathrm{H}_{2} \mathrm{SO}_{4} \rightarrow \mathrm{CO}_{2} \uparrow+2 \mathrm{SO}_{2} \uparrow+2 \mathrm{H}_{2} \mathrm{O}$

$\mathrm{H}_{2} \mathrm{SO}_{4}$ is reduced to $\mathrm{SO}_{2}$ and $\mathrm{C}$ is oxidised to $\mathrm{CO}_{2}$

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

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

Similar questions

Which of the following order is correct for the property mentioned in brackets?
→
Arrange the following compounds in increasing order of their reactivity towards $HCN$

$(I)$ Acetaldehyde

$(II)$ Acetone

$(III)$ Di-tert-butylketone

$(IV)$ Methyl-tert-butyl ketone

→
Least reactive towards nucleophilic addition is
→
The correct order of decreasing value of $K_{eq.}$ is
→
The equivalent mass of a metal is $29.73$ and the vapour density of its chloride is $130.4$. Find out the atomic mass of the metal
→
In diborane, the two $H - B - H$ angles are nearly
→
An aqueous solution of $6.3\, g$ of oxalic acid dihydrate is made up to $250\, ml$. The volume of $0.1\, N\, NaOH$ required to completely neutralise $10\, ml$ of this solution is.......$ml$
→
The $pH$ of a solution is $2. $  If its $pH$ is to be raised to $ 4$, then the $[{H^ + }]$ of the original solution has to be
→
Given below are two statements:

Statement $(I)$ : $\mathrm{SiO}_2$ and $\mathrm{GeO}_2$ are acidic while $\mathrm{SnO}$ and $\mathrm{PbO}$ are amphoteric in nature.

Statement $(II)$ : Allotropic forms of carbon are due to property of catenation and $\mathrm{p} \pi-\mathrm{d} \pi$ bond formation.

In the light of the above statements, choose the most appropriate answer from the options given below:

→
An acidic buffer solution can be prepared by mixing solution of
→