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

 $A + B \to $ products, it is found that the rate of the reaction is proportional to the concentration of $A,$  but it is independent of the concentration of $B$, then

Reaction : $KCl{O_3} + 6FeS{O_4} + 3{H_2}S{O_4} \to $ $KCl + 3F{e_2}{\left( {S{O_4}} \right)_3} + 3{H_2}O$ 

Which is True $(T)$ and False $(F)$ in the following sentence ?

The order of this reaction is $10$.

Write differential rate expression of following reaction and give its order of reaction:

$CHCl _{3}+ Cl _{2} \rightarrow CCl _{4}+ HCl$

$CH _{3} COOC _{2} H _{5}+ H _{2} O \rightarrow CH _{3} COOH + C_2H_5OH$

What is the molecularity of the following reaction ?

$1.$ $NH _{4} NO _{2( s )} \rightarrow N _{2( g )}+2 H _{2} O$

$2.$ $2 HI \rightarrow H _{2}+ I _{2}$

$3.$ $2 NO + O _{2} \rightarrow 2 NO _{2}$

For a certain reaction $A \to P$ , the half life for different initial concentration of $A$ is mentioned below 

$[A_0]$  $||$  $0.1$  $||$  $0.025$

$t_{1/2}(s)$  $||$ $100$  $||$  $50$

Which of the following option $(s)$ is / are correct