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.

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].