State why nitric acid is a strong oxidising agent and yields varying products such as `NO,NO_(2)` on reaction with metals , non - metals etc.

Nitric acid is an oxidising agent and reacts with PbO but it does not react with PbO_(2) . Explain why?

Give reasons for the following : Nitric acid is a stronger oxidising agent in the conc . State of the acid than in the dilute state .

Convert nitric acid to sulphuric acid using a non - metal .

A non-metal A which is the largest constituent of air, when heated with H2 in 1 : 3 ratio in the presence of catalyst (Fe) gives a gas B. 0n heating with O_(2) it gives an oxide C. If this oxide is passed into water in the presence of air, it gives an acid D which acts as a strong oxidising agent. (a) Identify A, B, C and D. (b) To which group of the periodic table does this non-metal belongs?

(a) Following are the transition metal ions of 3d series: Ti^(4+),V^(2+),Mn^(3+),Cr^(3+) (Atomic numbers: Ti=22,V=23,Mn=25,Cr=24 ) Answer the following: (i) Which ion is most stable in an aqueous solution and why? (ii) Which ion is a strong oxidising agent and why? (iii) Which ion is colourless and why? (b) Complete the following equations: (i) 2MnO_(4)^(-)+16H^(+)+5S^(-)to (ii) KMnO_(4)overset(heat)to

Dilute nitric acid is generally considered a typical acid but not so in its reaction with metals. Explain ?

Dilute nitric acid is generally considered a typical acid except for its reaction with metals. In what way dilute nitric acid is different from other acids, when it reacts with metals.

Assertion : Cr(VI) in the form of dichromate in acidic medium is a strong oxidising agent where MoO_3 and WO_3 are not. Reason: In d-block elements higher oxidation states are favoured by heavier members.

Which of the following acids will not evolve H_(2) gas on reaction with alkali metals?

Select the correct word from the list in bracket to complete each statement . A mineral acid obtained from conc .nitric acid on reaction with a non - metal is _______ [hydorchloric acid/sulphuric acid/carbonic acid].