Chemistry
2021 · Paper 1
Take it one question at a time. Try an answer, then check your understanding.
Complete GATE CY 2021 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 58–60 of 65. Imported answers require review unless explicitly marked reviewed.
Question 48
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The molar absorption coefficient of a substance dissolved in cyclohexane is 170 L mol⁻¹ cm⁻¹ at 500 nm. The reduction in intensity of light of the same wavelength that passes through a cell of 1 cm path length containing a 2 mol L⁻¹ solution (rounded off to one decimal place) is _________%.
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The fundamental vibrational frequency of ¹H¹²⁷I is 2309 cm⁻¹. The force constant for this molecule (rounded off to the nearest integer) is _____ N m⁻¹. [N = 6.022 × 10²³, c = 3.0 × 10⁸ m s⁻¹]
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A laser Raman spectrometer operating at 532 nm is used to record the vibrational spectrum of Cl₂ having its fundamental vibration at 560 cm⁻¹. The Stokes line corresponding to this vibration will be observed at ______ cm⁻¹. (Rounded off to the nearest integer)
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