Question

Q.2 State true or false:
i.
The valency of hydrogen is 2. Else
11.
The nucleus of atom is very hard and dense.
111.
Dalton put forth the plum pudding model of the atom.
iv. The sub atomic particle with positive charge is neutron.
V.
Separation of components of mixture is necessary.
vi.
Cobalt is a pure substance. .
vii.
the chemical changes are permanent and reversible.
Gases have no fixed shape and have negligible compressibility.​

Answer 1

Answer:

true false idk true false false true

Explanation:

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