SSC (English Medium) इयत्ता १० वी - Maharashtra State Board Question Bank Solutions for Science and Technology 1

Write the molecular formulae of the following compound.

Fluorspar

Write the molecular formulae of the following compound.

Sodium aluminate

Explain the concept of Roasting.

Explain the concept of Calcination.

Explain Bayer’s process.

Explain the reactions of nonmetals with water with the help of examples.

Explain the characteristics of ionic compounds.

Explain the following reaction with the balanced equation.

Chlorine dissolved in water

Explain the following reaction with the balanced equation.

Sodium aluminate reacts with water

Explain the following reaction with the balanced equation.

Ferric oxide is reacted with aluminium.

Explain the following reaction with the balanced equation.

Dry aluminium hydroxide is ignited at 1000 °C

Explain the following reaction with the balanced equation.

Zinc sulphide is heated strongly in excess of air

Explain the following reaction with the balanced equation.

Zinc carbonate is heated strongly in limited supply of air

Explain the following reaction with the balanced equation.

Zinc oxide is treated with carbon

Explain concept with example/explain with the help of a balanced equation.

Ionic bond and ionic compounds

Explain concept with example/explain with the help of a balanced equation.

Roasting

Explain concept with example/explain with the help of a balanced equation.

Calcination

Complete flow chart given below.

An object is placed vertically at a distance of 20 cm from a convex lens. If the height of the object is 5 cm and the focal length of the lens is 10 cm, what will be the position, size and nature of the image? How much bigger as compared to the object?

Observe the given below the figure, correct it and explain and write about the concept depicted in this figure.