CDS Model Paper 3 General Knowledge

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DIRECTIONS (Qs. 33): The following questions consist of two statements, one labelled as the Assertion (A) and the other as 'Reason (R), You are to examine these two statements carefully and select the answers to these items using the codes given below:
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Question : 33 of 120
 
Marks: +1, -0
Assertion (A) : A test tube is filled up with
1
4
of its volume with water and immersed in a glass of water. The upper portion of the test tube looks bright.
Reason (R) : This is due to dispersion of light.
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