Life Sciences
2021 · Paper 1
Take it one question at a time. Try an answer, then check your understanding.
Complete GATE XL 2021 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 25–27 of 125. Imported answers require review unless explicitly marked reviewed.
Question 15
Open questionXL-PNAT2 marksNeeds review
The freezing point of 80 g of acetic acid (freezing point constant 3.9 K kg mol⁻¹) was lowered by 7.8 K due to the addition of 20 g of a compound. The molar mass of the compound is ________ g mol⁻¹ (rounded off to closest integer).
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Open questionXL-QMCQ1 markNeeds review
Which one of the following molecules (~ 1 mg/mL) do NOT absorb at 280 nm in an aqueous solution of pH 7.00 at room temperature?
Your answerChoose one option.
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Open questionXL-QMCQ1 markNeeds review
A molecule that forms a donor-acceptor energy transfer pair with the dansyl group is ______
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