Life Sciences
2020 · Paper 1
Take it one question at a time. Try an answer, then check your understanding.
Complete GATE XL 2020 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 13–15 of 125. Imported answers require review unless explicitly marked reviewed.
Question 3
Open questionXL-PNAT1 markNeeds review
In naphthalene, the value of the integer “n” according to Hückel’s rule of aromaticity is _____.
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Open questionXL-PNAT1 markNeeds review
The azimuthal quantum number (
) of an electron in the
orbital of a copper atom (atomic number: 29) is _____.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 5
Open questionXL-PNAT1 markNeeds review
The standard enthalpy of reaction (in kJ mol
) for obtaining three moles of H
(g) from atomic hydrogen in gas phase is _____. (Given: Standard enthalpy of formation of atomic hydrogen in gas phase is 218 kJ mol
)Log in to check the answer
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