railway RRB ALP (CBT 1 + CBT 2 + CBAT) Mock Test Series 2025 (New) Fitter Safety

What are the colors used on signs used for fire extinguisher equipment?

1
Pictogram in white on a red background
2
Pictogram in white on a green background
3
Pictogram in white on a black background
4
Pictogram in yellow on black background
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