SSC (Marathi Semi-English) इयत्ता १० वी - Maharashtra State Board Important Questions for Science and Technology 2

Choose the correct alternative and rewrite the following:

Iron is _____________________.

Write three methods of preventing rusting of iron.

Draw a well-labelled diagram of extraction of Aluminium. Write the anode reaction in electrolytic reduction of Alumina.

Name one metal each occurring as :  
A sulphine

Name one metal each occurring as :
A carbonate

Name one metal each occurring as :  
An oxide

Suggest measures to minimize electricity consumption at home.

Write any two measures to conserve water.

Explain the disadvantages of a large family size.

Solar water – heater works on renewable energy system

State any four objectives of sustainable development.

Examples of recycling of waste.

State two advantages of recycling.

Write a short note on pressure cooker.

Suggest control measures of noise pollution

Population explosion is the root cause for depletion of natural resources. Explain.

What is the need to use eco-friendly technology?

Fill in the blank:

______________ is a greenish coloured poisonous gas.

Choose the correct alternative and rewrite the following:

Twenty dry raisins were soaked in 50 ml of water and kept for one hour at 500 C. Which out of the following is the correct observation?