Life Sciences
GATE XL kind:question PYQs
Build your understanding with focused practice from past exam papers.
Questions 631–640 of 1235. Imported answers require independent review unless marked reviewed.
Question 11
Open questionXL-PMSQ2 marksNeeds review
Among the following, the diamagnetic species is(are)
(Given: Atomic numbers of Fe = 26, Co = 27, and Ni = 28)
Your answerSelect all correct options. You can choose more than one.
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Open questionXL-PNAT2 marksNeeds review
Given the following standard heats of formation,
,
, and
, the average bond enthalpy of a P–H bond in PH₃(g) is ________ kJ mol⁻¹ (rounded off to one decimal place).Log in to check the answer
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Open questionXL-PNAT2 marksNeeds review
The total number of possible geometrical isomer(s) for [PtBrCl(NH₃)(py)]⁰ is ________.
(Given: py = Pyridine and atomic number of Pt = 78)
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Open questionXL-PNAT2 marksNeeds review
Given the standard reduction potentials,
and
, the potential of the following cell
at 25 °C is ________ V (rounded off to two decimal places).
(Given: Faraday constant = 96500 C mol⁻¹, Gas constant R = 8.314 J K⁻¹ mol⁻¹)Log in to check the answer
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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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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 1
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 ______
Your answerChoose one option.
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Open questionXL-QMCQ1 markNeeds review
The stationary phase used in gel filtration chromatography is composed of ______
Your answerChoose one option.
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Open questionXL-QMCQ1 markNeeds review
According to the “wobble hypothesis” inosine at the third position of the anticodon cannot form hydrogen bonds with ________
Your answerChoose one option.
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Open questionXL-QMCQ1 markNeeds review
pKa value of the guanidinium group of Arginine is ______
Your answerChoose one option.
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