Which of the following spectral band of Landsat-1 is generally NOT used for production of colour composite?

Correct option is D

Band 5 of Landsat-1, which captures the red portion of the visible spectrum, is sometimes excluded from specific color composites. The production of color composites involves selecting spectral bands that highlight key features in the image, such as vegetation, water bodies, and urban areas. 
Information Booster:
· Color Composites: These are images created by assigning different spectral bands to the red, green, and blue channels of a digital image. Each channel highlights specific features of the landscape.
· Visible and Infrared Bands: Landsat’s visible bands (Bands 4 and 5) are useful for visual interpretation of landscapes, while infrared bands (Band 7) are crucial for detecting moisture content and vegetation.
Additional Knowledge:
· Band 4 (Green Band): Used in color composites to represent the green channel, it enhances vegetation visibility. It is typically included when examining plant life and ecosystems.
· Band 6 (Thermal Infrared Band): It measures surface temperature, useful in environmental monitoring (heat islands, fire detection), but not for producing color images in the visible spectrum.
· Band 7 (Shortwave Infrared Band): Ideal for monitoring moisture levels in soil and vegetation. It is often used to enhance color composites, especially in false-color images.