1
IIT-JEE 2008 Paper 1 Offline
MCQ (More than One Correct Answer)
+4
-2

A solution of colourless salt H on boiling with excess NaOH produces a non-flammable gas. The gas evolution ceases after sometime. Upon addition of Zn dust to the same solution, the gas evolution restarts. The colourless salt(s) H is(are):

A
NH$$_4$$NO$$_3$$
B
NH$$_4$$NO$$_2$$
C
NH$$_4$$Cl
D
(NH$$_4$$)$$_2$$SO$$_4$$
2
IIT-JEE 2006
MCQ (More than One Correct Answer)
+5
-1.25
The species present in solution when CO2 is dissolved in water are
A
CO2, H2CO3, $$HCO_3^-$$, $$CO_3^{2-}$$
B
$$H_2CO_3$$, $$CO_3^{2-}$$
C
$$CO_3^{2-}$$, $$HCO_3^-$$
D
CO2, H2CO3
JEE Advanced Subjects