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(C) Marshall's acid $(H_2S_2O_8)$ undergoes hydrolysis to give sulfuric acid and hydrogen peroxide: $H_2S_2O_8 + 2H_2O 	o 2H_2SO_4 + H_2O_2$. (True)$

Vedclass · Accepted Answer

$TFTT$

Vedclass · Answer

(C) Marshall's acid $(H_2S_2O_8)$ undergoes hydrolysis to give sulfuric acid and hydrogen peroxide: $H_2S_2O_8 + 2H_2O 	o 2H_2SO_4 + H_2O_2$. (True)$(B)$ In $H_3SiNCS$,due to $p\pi-d\pi$ back-bonding from $N$ to $Si$,the $Si-N-C$ bond angle is $180^\circ$ (linear),not bent. (False)$(C)$ The basic structural unit of all silicates is the $SiO_4^{4-}$ tetrahedron. (True)$(D)$ Ammonium salts react with strong bases to release ammonia gas: $NH_4Cl + NaOH 	o NaCl + NH_3 \uparrow + H_2O$. (True)Therefore,the correct sequence is $TFTT$.

For correct statement use $T$ and for incorrect use $F$:
$(A)$ Hydrolysis of Marshall's acid gives $H_2SO_4$ and $H_2O_2$ as final products.
$(B)$ In $SCNSiH_3$ structure,the geometry around $N$ is bent.
$(C)$ The basic unit for silicates is $SiO_4^{4-}$.
$(D)$ $NH_4Cl + NaOH \to NH_3 \uparrow$.

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For correct statement use $T$ and for incorrect use $F$:$(A)$ Hydrolysis of Marshall's acid gives $H_2SO_4$ and $H_2O_2$ as final products.$(B)$ In $SCNSiH_3$ structure,the geometry around $N$ is bent.$(C)$ The basic unit for silicates is $SiO_4^{4-}$.$(D)$ $NH_4Cl + NaOH \to NH_3 \uparrow$.