Question

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): Traditionally metal castings are both hollow and solid. Reason (R): Electric kilns fitted with carbon and rod elements and not wires, are ideal for baking moulds. In the light of the above statements, choose the most appropriate answer from the options given below:

• A. Both (A) and (R) are correct and (R) is the correct explanation of (A)
• B. Both (A) and (R) are correct but (R) is not the correct explanation of (A)
• C. (A) is correct but (R) is not correct
• D. (A) is not correct but (R) is correct

Hint:

Logic Tip: Hollow vs solid casting relates to mould design, not kiln heating elements.

Answer 1

The Correct Option is B

Concept:
Metal casting is an ancient sculptural and industrial process used to produce metal objects by pouring molten metal into moulds. Traditional casting techniques can produce both:
• Hollow castings
• Solid castings At the same time, kilns are important tools used for heating and preparing moulds during the casting process.

Step 1:
Traditional metal casting methods indeed produce:
• Solid castings — where the entire mould cavity is filled with metal
• Hollow castings — where a core is used to leave empty space inside Hollow casting is often preferred for:
• Large sculptures
• Reducing weight
• Saving metal Solid casting is common for:
• Smaller objects
• Decorative items
• Simple forms Therefore: \[ Assertion (A) is correct \]

Step 2:
Electric kilns used in mould preparation are often equipped with:
• Carbon elements
• Rod heating elements These are useful because they:
• Produce stable heat
• Maintain controlled temperature
• Efficiently bake moulds Thus, the statement about kilns is also technically correct. Therefore: \[ Reason (R) is correct \]

Step 3:
Although both statements are true:
• Assertion discusses the types of metal casting.
• Reason discusses kiln construction and mould baking. The kiln explanation does not explain why metal castings can be hollow or solid. Hence: \[ Reason is not the correct explanation of Assertion \]

Step 4:
Since both statements are correct but the Reason does not explain the Assertion, the correct answer is: \[ \boxed{\text{(2) Both (A) and (R) are correct but (R) is not the correct explanation of (A)}} \]