Chromium oxide in paints makes the colour of paint

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Q: 29 (CDS-II/2014)
Chromium oxide in paints makes the colour of paint

question_subject: 

Science

question_exam: 

CDS-II

stats: 

0,42,33,42,9,14,10

keywords: 

{'chromium oxide': [0, 0, 0, 2], 'paints': [0, 0, 2, 4], 'paint': [0, 0, 1, 4], 'colour': [11, 6, 13, 28], 'blue': [0, 1, 0, 0], 'green': [4, 0, 4, 6], 'red': [1, 0, 0, 0], 'white': [0, 0, 4, 3]}

The correct answer is option 1: Green. Chromium oxide is a compound that contains chromium and oxygen. It is commonly used as a pigment in paints to produce shades of green. The green color is a result of the specific wavelengths of light that are absorbed and reflected by the chromium oxide particles in the paint. When light hits an object, the object absorbs certain wavelengths of light and reflects others. In the case of chromium oxide, it absorbs most wavelengths of light except for the green ones, which are reflected back to our eyes, giving the paint its green color.

Option 2: White is incorrect because chromium oxide does not produce a white color in paint.

Option 3: Red is incorrect because chromium oxide does not produce a red color in paint.

Option 4: Blue is incorrect because chromium oxide does not produce a blue color in paint.