Solar energy

Q.

Naturally occurring metallic compounds are called minerals

1. True
2. False

Q.

What is the main source for the most of the energy we use originally?

Q.

Indian Railways have recently launched their first solar-powered train the solar panels fitted on the top of the train coaches generate 17 units of power each day which enables the lighting system inside the coach what is your opinion about what is your opinion about this initiative of Indian Railways?

Q.

Which source of energy is used for obtaining salt from sea water?

1. Wind energy

2. Solar energy

3. Nuclear energy

4. None of these

Q. From the below given options, choose the correct statement(s) about solar energy.

1. The potential of solar energy is maximum between 66 degree and 90 degree latitudes.
2. The intensity and duration of sun rays determine the amount of power that can be generated.
3. Solar power has the potential to run devices like lamps, heaters, dryers, and cookers.
4. India has a lot of scope to use solar energy.

Q.

State two limitations of solar energy?

Q. Greenlife is an environmental organisation based in City 'D', that is working to promote the adoption of solar energy, on a mass scale. It supports the initial setup of rooftop solar panels by providing these panels at a cheaper price for the residents of 'D'. The initial response to the organisation's efforts has been very positive. Which of the following option(s) might explain the positive response of the people of 'D' to the NGO's efforts?

1. Solar energy is a clean source of energy.
2. Solar energy is a renewable source of energy.
3. Solar energy can power devices like heaters, dryers, cookers, etc.
4. Solar energy is a conventional source of energy.

Q. Solar energy is a form of energy that uses the power of moving water to generate electricity.

1. False
2. True

Q. From the following options given, pick out the correct reason as to why impurities should be removed from mineral ores?

1. To avoid drilling, mining etc.
2. To obtain large quantities of mineral ores.
3. To convert mineral ores into useful materials.
4. To retain the minerals in its pure state.