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

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

Matter that contain two or more constituent substances is called ______.

Plants synthesize glucose in sunlight with the help of chlorophyll from carbon dioxide and water and give away oxygen. identify the four compounds in this process and name their types.

Give two examples.

Organic compound

Give two examples.

Complex compound

Give two examples.

Inorganic compound

What is done to prevent corrosion of metals?

What are the adverse effects of corrosion?

Complete the following table.

The density of metal is 10.8 × 10³ kg/m³. Find the relative density of the metal.

Volume of an object is 20 cm³ and the mass in 50 g. Density of water is 1 g cm^-3. Will the object float on water or sink in Water?

The volume of a plastic covered sealed box is 350 cm³ and the box has a mass 500 g. Will the box float on water or sink in water? what will be the mass of water displaced by the box? 

Matter is classified into the types of mixture, compound and element by applying the criterion ______.