Question

Match List-I with List-II.
{|l|l|} List-I (Electrical Home-appliance) & List-II (Function)
(A) Microwave & (I) Heating device in which natural gas is used for fuel
(B) Geyser & (II) Radiation heating through magnetron happens
(C) Gas-burner & (III) Draws electricity from the mains, heats a coil inside and then heat is transferred to bottom plate
(D) Electric iron & (IV) Converts electrical energy into heat energy using electric resistance

• (A) - (IV), (B) - (III), (C) - (II), (D) - (I)
• (A) - (II), (B) - (IV), (C) - (I), (D) - (III)
• (A) - (II), (B) - (III), (C) - (I), (D) - (IV)
• (A) - (III), (B) - (II), (C) - (I), (D) - (IV)

Hint:

Remember: the core component of a microwave is the magnetron (A - II), and gas-burners specifically burn fossil fuel gas (C - I), which quickly narrows down the correct matches.

Answer 1

The Correct Option is B

Step 1: Understanding the Concept:
Household appliances use different forms of energy (such as electricity or natural gas) and heat-transfer mechanisms to perform specific tasks.

Step 2: Detailed Explanation:
Let us match each household appliance with its operating principle and function:
- (A) Microwave: This appliance uses a specialized vacuum tube called a magnetron to generate electromagnetic radiation (microwaves). These waves vibrate water molecules within food, producing rapid, uniform heat. This matches description (II). Thus, (A) matches with (II).
- (B) Geyser: This is a water heating appliance that uses high-resistance heating elements. When electric current flows through these elements, it generates thermal energy to heat the water. This matches description (IV): "Converts electrical energy into heat energy using electric resistance." Thus, (B) matches with (IV).
- (C) Gas-burner: This is a cooking appliance that burns natural gas or liquefied petroleum gas (LPG) to produce an open flame for heating. This matches description (I). Thus, (C) matches with (I).
- (D) Electric iron: This appliance uses an internal heating element. Electric current heats the coil, and this thermal energy is conducted directly to the heavy metal soleplate (bottom plate) to press clothes. This matches description (III). Thus, (D) matches with (III).
Combining these matches gives: (A) - (II), (B) - (IV), (C) - (I), (D) - (III).

Step 3: Final Answer:
The correct matching sequence corresponds to option (B).