Question

4. Match the columns.
Column-A
a) Large surface area
b) Molecules
c) Conditions
d) Valence electrons
e) Chlorine
f) Sodium hydroxide with hydrochloride acid
g) Evolution of gas
h) Volcanic eruption
i) Valency of Nitrogen in NH3
;) Calcium Carbonate (CaCO3)
(10x1=1
Column-B
i) Number of electrons present in the outermost shell.
ii) 3.
iii) Natural and non-periodic change.
iv) condition of a chemical reaction.
v) smallest unit of a compound.
vi) High evaporation rate.
vii) Exothermic reaction.
viii) Limestone.
ix) Are written on the top of or below the arrow.
x) Member of group 17.​

Answer 1

Answer:

molcules1 natural2 high evaporation 3reaction