Question

a) Choose The correct answer from the options given below:
An element with the atomic number 19 will most likely combine chemically with the
element whose atomic-number is:
A) 17
B) 11
C) 18
D) 20
The particles present in strong electrolytes are:
A) Only molecules
C) lons & Molecules
B) Mainly ions
D) Only atoms
Identify the metallic-oxide which is amphoteric in nature:
A) Calcium-Oxide
C) Zinc Oxide
B) Barium-Oxide
D) Copper (II) Oxide
iv) Which of the following is not a typical property of an ionic compound?
A) High melting point
B) Conduct electricity in the molten & aqueous state
C) They are insoluble in water
D) They exist as oppositely charged ions even in the solid state.
V) During the electrohysis of Molten lead Bromide, which of the following takes place?
A) Bromine is released at the cathode.
B) Lead is deposited at the anode
C) Bromine ions gain electrons.
D) Lead is deposited at the cathode
b) State one appropriate observation for each of the following.
is added dropwise to a crystal of hydrated copper sulphate.​

Answer 1

first is is a

second is is d

third is d

forth is a

v is is b