Life Sciences
2022 · Paper 1
Take it one question at a time. Try an answer, then check your understanding.
Complete GATE XL 2022 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 25–27 of 122. Imported answers require review unless explicitly marked reviewed.
Question 25
Open questionXL-PNAT2 marksNeeds review
The total number of 3-centre-2-electron bonds in B
H
is ______ (in integer).Log in to check the answer
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Open questionXL-PNAT2 marksNeeds review
The equilibrium constant for isomerization of 1-butene to trans-2-butene at 27 °C is ______ (round off to one decimal place).
Given: Gas constant = 8.314 J K
mol
of 1-butene = +71.39 kJ mol
of trans-2-butene = +63.06 kJ mol
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 27
Open questionXL-PNAT2 marksNeeds review
A 16 mW monochromatic light emits
photons in 1 second. When this light incidents on a metal strip, photoelectrons are emitted. The wavelength of the emitted photoelectrons (in Å) is ______ (round off to one decimal place).Given: Work function of the metal = 2.0 eV
Charge of an electron =
CMass of an electron =
kgPlanck’s constant =
J sLog in to check the answer
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