Zn gives H2 gas with H2SO4 and HCI but not with HNO3 because
(a) Zn act as oxidising agent when react with HNO3
(b) HNO3 is weaker acid than H2SO4 and HCI
(c) In electrochemical series Zn is above hydrogen
(d) NO3 is reduced in preference to hydronium ion.