Identify the incorrect statement - Vidyadip

MCQ

Identify the incorrect statement

A
In $(Si_3O_9)^{6-}$, tetrahedral $SiO_4$ units share two oxygen atoms
✓
Trialkylchlorosilane on hydrolysis gives $R_3SiOH$.
C
$SiCl_4$ undergoes hydrolysis to give $H_4SiO_4$
D
$(Si_3O_9)^{6-}$ has cyclic structure.

✓

Answer

Correct option: B.

Trialkylchlorosilane on hydrolysis gives $R_3SiOH$.

b
The hydrolysis of Trialkylchlorosilane $R_3SiCl$ yields dimer :

$\begin{matrix}
\,\,\,R\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,R\, \\
\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|\, \\
R-Si-O-Si-R \\
|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,| \\
R\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,R \\
\end{matrix}$

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

If pure unhybridised orbitals are used in forming $CH_4$ then which statement is incorrect :-

Which of the following metal displacement reaction will not take place and why?

The effect that makes $2,3-$ dimethyl $-2-$ butene more stable than $2-$ butene is

The first, second and third ionisation energies $(E_1 ,E_2$ & $E_3 )$ for an element are $7\,eV, 12.5\,eV$ and $42.5\,eV$ respectively. The most stable oxidation state of the element will be

Schemes $1$ and $2$ describe sequential transformation of alkynes $M$ and $N$. Consider only the major products formed in each step for both the schemes. $Image$

$1.$ The product $X$ is

mcq $Image$

$2.$ The correct statement with respect to product $Y$ is :

$(A)$ It gives a positive Tollens test and is a functional isomer of $X$.

$(B)$ It gives a positive Tollens test and is a geometrical isomer of $X$.

$(C)$ It gives a positive iodoform test and is a functional isomer of $X$.

$(D)$ It gives a positive iodoform test and is a geometrical isomer of $X$.

Give the answer question $1$ and $2.$

For an aqueous solution, the characteristic species of acid is

Which of the following has covalent bond

Benzene on treatment with a mixture of conc. $HNO_3$ and conc. $H_2SO_4$ at $90^o C$ gives :

In Duma's method for estimation of nitrogen, $0.25\, g$ of an organic compound gave $40 \,mL$ of nitrogen collected at $300\, K$ temperature and $725\, mm$ pressure. If the aqueous tension at $300\, K$ is $25\, mm,$ the percentage of nitrogen in the compound is

Dilution processes of different aqueous solutions, with water, are given in LIST-I. The effects of dilution of the solutions on $\left[ H ^{+}\right]$are given in $LIST-II$.

(Note: Degree of dissociation ( $\alpha$ ) of weak acid and weak base is $<<1$; degree of hydrolysis of salt $<<1 ;\left[ H ^{+}\right]$represents the concentration of $H ^{+}$ions)

$LIST-I$	$LIST-II$
$P$ $(10 mL $of $0.1 M NaOH +20 mL$ $of 0.1 M $ acetic acid) diluted to $60 mL$	$1$ the value of $\left[ H ^{+}\right]$does not change on dilution
$Q $ $(20 mL $ of $ 0.1 M NaOH +20 mL $of $0.1 M $ acetic acid) diluted to $ 80 mL$	$2$ the value of $\left[ H ^{+}\right]$changes to half of its initial value on dilution the value of $\left[ H ^{+}\right]$changes to two times of its initial value on dilution
$R$ $(20 mL $ of $ 0.1 M HCl +20 mL$of $0.1 M$ ammonia solution) diluted to $80 mL$	$3$ the value of $\left[ H ^{+}\right]$changes to $1 / \sqrt{2}$ times of its initial value on dilution
$S$ $10 mL$ saturated solution of Ni $( OH )_2$in equilibrium with excess solid Ni $( OH )_2$ s diluted to $20 mL$ (solid Ni $( OH )_2$ is still present afterdilution).	$4$the value of $\left[ H ^{+}\right]$changes to $\sqrt{2}$ times of its initial value on dilution
	$5$ the value of $\left[ H ^{+}\right]$changes to $\sqrt{2}$ times of its initial value on dilution

Match each process given in $LIST-I$ with one or more effect(s) in $LIST-II$. The correct option is