Question

Which of the following is an Inch Sheet topographical map?

• A. 72
• B. 72 F
• C. 72 F/NE
• D. 72 F/10

Hint:

Remember the Survey of India notation: \[ \boxed{ \begin{aligned} 72\ \mathrm{F} &\rightarrow \text{Degree Sheet}, 72\ \mathrm{F/NE} &\rightarrow \text{Inch Sheet}, 72\ \mathrm{F/10} &\rightarrow \text{Metric Toposheet}. \end{aligned} } \] Mnemonic: “NE/NW/SE/SW = Inch Sheets.”

Answer 1

The Correct Option is C

Concept: In the Survey of India indexing system, Inch Sheet topographical maps are designated using a sheet number followed by a quadrant such as NE, NW, SE, or SW.

Step 1: Identify the inch-sheet notation. \[ \boxed{72\ \mathrm{F/NE}} \]

Step 2: Eliminate the incorrect options. \[ \begin{aligned} A. &\ 72 \rightarrow \text{Only a sheet number.} B. &\ 72\ \mathrm{F} \rightarrow \text{One-degree sheet.} C. &\ 72\ \mathrm{F/NE} \rightarrow \text{Correct inch-sheet designation.}\checkmark D. &\ 72\ \mathrm{F/10} \rightarrow \text{Metric-sheet notation.} \end{aligned} \] Hence, \[ \boxed{\text{(C)}} \]