Question

Q2. C) Distinguish between

1. Proton and Neutron


2. Compound and Mixture


3. Metals and Non-Metals


Q2. D) Draw neat labeled diagram

1. Dry Cell


2. Diagrammatic sketch of electronic configuration of magnesium Mg

(Automatic number12)


Q3. A) Give scientific reason (any2) (4)



1. Atom is electrically neutral.

2. Lemon sherbet has sweet, sour & Salty taste and it can be poured in

glass.


3. A solid matter has the properties of definite shape and volume.


Q3.B) Define (2)


1. Atomic number


2. Alloy

Q3.C) Give two examples of each (2)


1. Homogenous mixture


2. Complex compound


Q3. D) Deduce the molecular formulae of
the compound obtained from the

following pairs of elements by the cross-multiplication’s method.

1. C (valency 4) & CI (Valency 1)

2. Ca (Valency2) & O (Valency2)​

Answer 1

Answer:

Protons are positively charged particle present in the nucleus of an atom. Protons differ from neutrons because they are positively charged whereas neutrons do not carry any charge and are neutral.