Question

$$KMn{O_4}$$  acts as an oxidising agent in alkaline medium. When alkaline $$KMn{O_4}$$  is treated with $$KI,$$  iodide ion is oxidised to

A. $${I_2}$$
B. $$I{O^ - }$$
C. $$IO_3^ - $$  
D. $$IO_4^ - $$
Answer :   $$IO_3^ - $$
Solution :
$$2MnO_4^ - + {H_2}O + {I^ - } \to $$      $$2Mn{O_2} + 2O{H^ - } + IO_3^ - $$

Releted MCQ Question on
Inorganic Chemistry >> D and F Block Elements

Releted Question 1

When same amount of zinc is treated separately with excess of sulphuric acid and excess of sodium hydroxide, the ratio of volume of hydrogen evolved is

A. $$1:1$$
B. $$1:2$$
C. $$2:1$$
D. $$9:4$$
Releted Question 2

Which of the following is the weakest base

A. $$NaOH$$
B. $$Ca{\left( {OH} \right)_2}$$
C. $$KOH$$
D. $$Zn{\left( {OH} \right)_2}$$
Releted Question 3

One of the constituent of German silver is

A. $$Ag$$
B. $$Cu$$
C. $$Mg$$
D. $$Al$$
Releted Question 4

Which of the following dissolve in hot conc.$$NaOH$$  solution

A. $$Fe$$
B. $$Zn$$
C. $$Cu$$
D. $$Ag$$

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D and F Block Elements


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