Question
 Choose the correct phrase from the options to improve
the sentences given below. If the sentence is correct and no improvement is required, select ‘E’ as your answer. X-ray wavelengths are shorter than UV rays and typically longer than gamma rays.Solution
Here, the wavelengths should be compared. So, ‘those of’ should be inserted before both ‘UV rays’ and ‘gamma rays’. X-ray wavelengths are shorter than those of UV rays and typically longer than those of gamma rays.
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