SSC (English Medium) इयत्ता ८ वी - Maharashtra State Board Question Bank Solutions for General Science

Why does it happen?

Fruits can easily be cut with a sharp knife. 

What is meant by atomic mass number?

Define the following form:

Atomic mass number

Which substances are produced by the neutralization process?

Classify the following substances into Acidic, Basic, and Neutral groups.

HCl, NaCl, MgO, KCl, CaO, H₂SO₄, HNO₃, H₂O, Na₂CO₃

The air pressure on our body is equal to ______ pressure.

How much pressure do we carry on our heads? why don't we feel it?

Why does it happen?

The wall of a dam is broad at its base.

Give scientific reason.

Atomic mass number is a whole number. 

Give scientific reason.

Atoms are stable though negatively charged electron is revolving within it. 

Draw a neat labelled diagram.

Diagramatic sketch of electronic configurations of magnesium  (Atomic number 12)

Draw a neat labelled diagram.

Diagramatic sketch of electronic configuration of Argon (Atomic number 18)

The electronic configuration magnesium is 2, 8, 2. From this it is understood that the valence shell of magnesium is ______.

Describe the construction and working of an electric bell with the help of a diagram. 

What are use of Noble metals?

Explain with the help of formulae the expansion coefficients of liquid and gas.

For a given object, the buoyant force in liquids of different ______ is ______.

A plastic cube is released into the water. Will it sink or come to the surface of the water? 

Why does it happen?

A ship dips to a larger depth in fresh water as compared to marine water.

Define the following form:

Moderator in nuclear reactor