Advertisements
Advertisements
प्रश्न
Match the items given in Column I with the items of Column II.
| Column I | Column II |
| (a) Used for road surfacing | (i) Black gold |
| (b) Natural gas | (ii) Vaseline and candles |
| (c) Petroleum | (iii) Bitumen |
| (d) Paraffin wax | (iv) CNG |
Advertisements
उत्तर
| Column I | Answers |
| (a) Used for road surfacing | (iii) Bitumen |
| (b) Natural gas | (iv) CNG |
| (c) Petroleum | (i) Black gold |
| (d) Paraffin wax | (ii) Vaseline and candles |
APPEARS IN
संबंधित प्रश्न
Name two energy sources that you would consider to be renewable. Give reasons for your choices.
Classify the following into renewable and non-renewable sources of energy:
Coal, Wind, Tides, Petroleum,Wood, Natural gas
The calorific values of three fuels A, B and C are 33 kJ/g, 48 kJ/g and 150 kJ/g, respectively. A is solid, B is liquid and C is a gas at room temperature. One combustion, both A and B produce carbon dioxide while C explodes forming steam. B and C leave no residue after combustion while A leaves behind some solid residue. Which one of the three fuels is the most ideal? Give two reasons to support your answer.
Write the full forms of CNG and LPG.
Write a short note on the pollution caused by burning fossil fuels.
Fossil fuels are energy rich compounds of an element X which were originally made by the plants with help of sun's energy.
Name another element which is usually found in combination with X in fossil fuels.
Can you tell?
Why should we maximise the use of non-conventional energy resources?
Who is the odd one out?
Which one of the following forms of energy leads to least environmental pollution in the process of its harnessing and utilisation?
Why is there a need to harness non-conventional sources of energy? Give two main reasons.
