Chemical Properties 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.

Which of the following element has maximum standard reduction potential?

Which element of Group-$17$ does not show $+1$ oxidation state?

Fluorine can exist in the oxidation state:

Which one is the strongest reducing agent?

Most powerful oxidizing agent is:

Which of the following halogen disproportionate in water ?

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

Which of the following compound does not exist?

When ${\mathrm{Br}}_2$ is added to aqueous solution of $\mathrm{NaF}$, $\mathrm{NaCl}$ and $\mathrm{NaI}$ separately

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?

Of the following statements:
(a) ${\mathrm{Cl}}_2$ gas is dried by using conc. ${\mathrm{H}}_2{\mathrm{SO}}_4$
(b) Fluorine have highest oxidising power
(c) Oxidising power of halogens follow the order ${\mathrm{I}}_2>{\mathrm{Br}}_2>{\mathrm{Cl}}_2$
(d) $\mathrm{Hl}$ is the strongest acid among $\mathrm{HI},\mathrm{HBr},\mathrm{HCl}$

When cyanogen gas is passed through strong alkali then product formed is?

Which of the following is a false statement?

Iodine can exist in the oxidation states