Tag: the essence of change

Questions Related to the essence of change

The type of energy utilised by humans and animals to carry out their daily life activities is ________ .

physics the essence of change forms of energy and energy conservation energy for everything forms of energy

  1. wind energy

  2. geothermal energy

  3. biochemical energy

  4. hydro energy

Show answer
Correct Option: C
Explanation:
Biochemical energy comes under biochemistry which is a study of chemical processes within and relating to living organisms. By controlling information flow through biochemical signaling and flow of chemical energy through metabolism, biochemical processes involves in day to day activities.
Hence biochemical energy is utilised by humans for carrying daliy activities.

The energy stored in a torch cell is :

physics the essence of change forms of energy and energy conservation energy for everything forms of energy

  1. Light energy

  2. Electrical energy

  3. Chemical energy

  4. Potential energy

Show answer
Correct Option: C
Explanation:

The torch cell makes use of redox reaction to store energy in the form of chemical energy. This chemical energy is then converted to electrical energy and finally to light energy as the bulb glows.


Hence, correct answer is option $C$

The energy that helps in burning of wood is :

physics the essence of change forms of energy and energy conservation energy for everything forms of energy

  1. Chemical

  2. Electrical

  3. Potential

  4. Muscular

Show answer
Correct Option: A
Explanation:

In the case of burning wood, stored chemical energy in the log is released due to heating by other excited atoms. This chemical reaction is called combustion and requires oxygen. Combustion changes the chemical energy into heat and light energy.


Hence, correct answer is option $A$

An electric heater converts electrical energy into

physics the essence of change forms of energy and energy conservation energy for everything forms of energy

  1. Chemical energy

  2. Heat energy

  3. Light energy

  4. Muscular energy

Show answer
Correct Option: B
Explanation:

An electric heater is an electrical device that converts electrical energy into heat energy. The heating elements inside electric heater is an electrical converter and works on the principle of joule heating. An electric current passing through resistor converts electrical energy into heat energy.

The energy present in petrol is :

physics the essence of change forms of energy and energy conservation energy for everything forms of energy

  1. Chemical

  2. Kinetic

  3. Potential

  4. Heat

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Correct Option: A
Explanation:

 chemical energy is the potential of a chemical substance to undergo a transformation through a chemical reaction to transform other chemical substances.

kinetic energy is due to motion.
potential energy is due to relative position.
heat energy is due to temperature.
in petrol different different reaction occurs which provide energy to run the engine, so energy possessed in petrol is chemical energy.
option A.

The muscular energy required by our body is given to us by :

physics the essence of change forms of energy and energy conservation energy for everything forms of energy

  1. Air

  2. Water

  3. Oxygen

  4. Food

Show answer
Correct Option: D
Explanation:

chemical energy is the potential of a chemical substance to undergo a transformation through a chemical reaction to transform other chemical substances.

In food different different reaction occurs which provide energy to run the body, so energy possessed in food is chemical energy and which is converted to muscular energy required to run our body.
so option D.

The energy stored in food is :

physics the essence of change forms of energy and energy conservation energy for everything forms of energy

  1. Electrical

  2. Heat

  3. Chemical

  4. Muscular

Show answer
Correct Option: C
Explanation:

 chemical energy is the potential of a chemical substance to undergo a transformation through a chemical reaction to transform other chemical substances.

heat energy is due to temperature.
in food different different reaction occurs which provide energy to run the body, so energy possessed in food is chemical energy.
option C.

Energy stored in the molecules of matter is called :

physics the essence of change forms of energy and energy conservation energy for everything forms of energy

  1. Heat energy

  2. Potential energy

  3. Chemical energy

  4. Light energy

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Correct Option: C
Explanation:

Chemical Energy is the energy which is stored in the molecules of matter and holds the particles of molecule together.


Hence, correct answer is option is $C$

A torch converts________ energy to______ energy.

physics the essence of change forms of energy and energy conservation energy for everything forms of energy

  1. chemical, heat

  2. electrical, chemical

  3. chemical, light

  4. light, electrical

Show answer
Correct Option: C
Explanation:

A torch uses the energy released by the chemical reaction inside the cell and converts it to light energy by making the bulb  glow.


Hence, correct answer is option $C$

Electric heater converts:

physics the essence of change forms of energy and energy conservation energy for everything forms of energy

  1. Electric energy into chemical energy

  2. chemical energy into electric energy

  3. heat energy into electric energy

  4. electric energy and heat energy

Show answer
Correct Option: D
Explanation:

An electric heater converts electrical energy to heat energy.