Question
What steps would you suggest to reduce energy consumption?

Answer

Steps for reducing the energy consumption:
  1. Switch off all the lights, fans, TV and other appliances when not needed.
  2. Use of biogas as cooking fuel should be encouraged.
  3. Bicycles should be used for short distances to save precious fuels like petrol.
  4. Solar cookers should be used to cook food.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

What would happen if green plants disappear from earth?
Write the formulae of sodium chloride and sodium carbonate. Explain why an aqueous solution of sodium chloride is neutral but an aqueous solution of sodium carbonate is basic (or alkaline). Write chemical equations of the reactions involved.
How is charcoal prepared? Explain why, charcoal is a better fuel than wood.
Compare and contrast biomass and hydroelectricity as sources of energy.

Draw the following diagram, in which a ray of light is incident on a concave/convex mirror, on your answer sheet. Show the path of this ray, after reflection, in each case.
A convex lens of focal length 20cm can produce a magnified virtual as well as real image. Is this a correct statement? If yes, where shall the object be placed in each case for obtaining these images?
A diverging mirror of radius of curvature 40cm forms an image which is half the height of the object. Find the object and image positions.
When is a person said to have developed cataract in his eye ? How is the vision of a person
having cataract restored?
How far should an object be placed from the pole of a converging mirror of focal length 20cm to form a real image of the size exactly$\frac{1}{4}$ th the size of the object?
If the image formed by a mirror for all positions of the object placed in front of it is always erect and diminished, what type of mirror is it? Draw a ray diagram to justify your answer. Where and why do we generally use this type of mirror?