Question

Match List-I with List-II.

List-I	List-II
A. Gun metal B. Monel C. Inconel D. Nichrome	I. Nickel 68%, Copper 29%, Others 3% II. Nickel 65%, Chromium 15%, Iron 20% III. Copper 88%, Tin 10%, Zinc 2% IV. Nickel 80%, Chromium 14%, Iron 6%

• A. A-IV, B-III, C-I, D-II
• B. A-III, B-I, C-II, D-IV
• C. A-I, B-IV, C-III, D-II
• D. A-II, B-III, C-I, D-IV

Hint:

Gun metal → Cu-Sn-Zn, Monel → Ni-Cu, Inconel/Nichrome → Ni-Cr alloys.

Answer 1

The Correct Option is B

Concept: Standard alloy compositions:

Step 1: Gun metal (A).

• Copper + Tin + Zinc alloy Thus: \[ A \rightarrow III \]

Step 2: Monel (B).

• Nickel-Copper alloy Thus: \[ B \rightarrow I \]

Step 3: Inconel (C).

• Nickel-Chromium-Iron alloy Thus: \[ C \rightarrow II \]

Step 4: Nichrome (D).

• Nickel + Chromium alloy Thus: \[ D \rightarrow IV \]

Step 5: Final matching.
\[ A-III,\; B-I,\; C-II,\; D-IV \] \[ \boxed{\text{Answer: Option (2)}} \]