Indian army has published the notification for SSC Tech 56 men and SSC Tech 27 women for the course commencing at OTA Chennai from April 2021
Select the pairs of substances which on reaction will not evolve H2 gas?
Copper and HCl (aqueous)
Iron and steam
Iron and H2SO4 (aqueous)
Sodium and ethyl alcohol
Match the following
Type Reaction
a) Light is required 1) photochemical reaction
b) Light is evolved 2) Chemiluminiscent reaction
c) Electricity is required 3) Electrochemical reaction
d) Electricity is produced 4) Electrolytic reaction
A-1 B-2 C-4 D-3
A-1 B-2 C-3 D-4
A-2 B-1 C-3 D-4
Which of the following is an example of Endothermic reaction:
Burning of Natural Gas
Respiration
The decomposition of vegetable matter into compost
Melting of ice cubes
In the reaction between hydrogen sulphate ion and waterthe water acts as
an acid
amphoteric
an inert medium
.jpg)
