Reactions of Group 17 Elements

Which of the following statements is/are true?

(i) Halogens are strong oxidising agents.

(ii) ${\mathrm{NH}}_3$ is clearly basic while ${\mathrm{PH}}_3$ is only feebly basic.

Give the chemical reaction of chlorine with $\mathrm{HBr}$.

Fluorine can exist in the oxidation state:

Which one is the strongest reducing agent?

Which of the following Halogen doesn't form any oxide?

The stronger oxidizing agent is ____. 

On addition of conc. ${\mathrm{H}}_2{\mathrm{SO}}_4$ to a chloride salt, colourless fumes are evolved but in case of iodide salt, violet fumes come out. This is because

Which of the following statements is not true for halogens?

Iodine is the most electronegative element of group-$17$ of periodic table.

Iodine can exist in the oxidation states

The strongest oxidising agent is:

Out of all the halogen hydro acids, the weakest is:

What is the product formed when ${\mathrm{I}}_2$ dissolves appreciably in aqueous solution of $\mathrm{KI}$ . 

The reaction which is not feasible?
 

For the elements $\mathrm{F}, \mathrm{Cl}, \mathrm{O}$ and $\mathrm{N}$, the correct decreasing order of their chemical reactivity in terms of oxidizing property is

Among the given combinations how many are correctly matched.

(A) Order of oxidizing strength: ${\mathrm{F}}_2>{\mathrm{Cl}}_2>{\mathrm{Br}}_2>{\mathrm{I}}_2$
(B) Order of melting point: $\mathrm{HF}>\mathrm{Hl}>\mathrm{HBr}>\mathrm{HCl}$
(C) Order of bond dissociation enthalpy: ${\mathrm{Cl}}_2>{\mathrm{Br}}_2>{\mathrm{F}}_2>{\mathrm{I}}_2$
(D) Order of first ionization energy: $\mathrm{B}>\mathrm{TI}>\mathrm{Ga}>\mathrm{Al}>\ln$

Which of the following statement about reactions given below are correct

When  Na₂S₂O₃  react with    ${\mathrm{Cl}}_{2 }, {\mathrm{Br}}_2 \mathrm{and} {\mathrm{I}}_2$ respectively.

Consider the reaction,

$H_2+X_2\to 2HX,$ where $X$ is halogen. The reactivity of halogens decrease in the order of