Energy Conversion from One Form to Another
Trending Questions
Q.
Name non-metal which is required for combustion.
Q. Which of the following happens when a wax candle is burnt?
A. Wax undergoes oxidation.
B. Heat and light energy are released.
C. Water vapour and carbon dioxide are released.
A. Wax undergoes oxidation.
B. Heat and light energy are released.
C. Water vapour and carbon dioxide are released.
- A and B only
- B and C only
- C and A only
- A, B and C
Q.
Write a note on the history of fuels?
Q. Match the following:
ObjectsEnergy Conversions1 Bicyclea Sun′s energy to electrical energy2 Engineb Muscular energy to mechanical energy3 Wind turbinec Heat energy to mechanical energy4 Solar paneld Wind energy to electrical energy
ObjectsEnergy Conversions1 Bicyclea Sun′s energy to electrical energy2 Engineb Muscular energy to mechanical energy3 Wind turbinec Heat energy to mechanical energy4 Solar paneld Wind energy to electrical energy
- 1-c, 2-b, 3-d, 4-a
- 1-b, 2-c, 3-d, 4-a
- 1-c, 2-a, 3-d, 4-b
- 1-b, 2-c, 3-a, 4-d
Q. Heat is always evolved in a/an __________ reaction.
- physical
- exothermic
- endothermic
- chemical
Q. Which among the following is not an example of fuel?
- DDT
- LPG
- Petrol
- Wood
Q.
A chemical reaction in which heat and light/ flame are given out is called ___ .
Q. When people use the word 'fuel', many associates it to petrol or diesel filled in cars because we know that cars need fuel to run. Other cases where fuel is used are:
- Produce steam to run engine.
- Produce electricity in thermal power plants.
- Used for home applications such as heating and cooking.
- All of these
Q.
Match the following:
ObjectsEnergy Conversions1) Bicyclea)Sun's energy to electrical energy2)Engineb)Muscular energy to mechanical energy3)Wind turbinec)Heat energy to mechanical energy4)Solar paneld)Wind energy to electrical energy
1-c, 2-b, 3-d and 4-a
1-b, 2-c, 3-d and 4-a
1-c, 2-a, 3-d and 4-b
1-b, 2-c, 3-a and 4-d
Q. name the component of air that support burning
Q.
Define fuel.
Q.
Which of the following happens when a wax candle is burnt?
A. Wax undergoes oxidation.
B. Heat and light energy are released.
C. Water vapour and carbon dioxide are released.
A and B only
B and C only
C and A only
A, B and C