Life Sciences
GATE XL topic:biology PYQs
Build your understanding with focused practice from past exam papers.
Questions 21–30 of 1235. Imported answers require independent review unless marked reviewed.
Question 21
Open questionXL-PMCQ2 marksNeeds review
The major products P and Q obtained in the following reactions are
Your answerChoose one option.
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 22
Open questionXL-PMCQ2 marksNeeds review
The major product formed in the following two-step transformation is
(Note: Ts = tosyl and Ac = acetyl)
Your answerChoose one option.
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 23
Open questionXL-PMCQ2 marksNeeds review
Match the coordination complexes given in Column I with their most appropriate properties in Column II.
(Given: Atomic number of Mn-25; Co-27; Cu-29):
Column I — Coordination Complexes
E. [CuCl₅]³⁻
F. [Co(NH₃)₃Cl₃]
G. [Co(NH₃)₄Cl₂]
H. [Mn(H₂O)₆]²⁺
Column II — Properties
I. Facial and meridional isomerism
II.
III. Very faintly coloured
IV. Trigonal bipyramidalYour answerChoose one option.
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 24
Open questionXL-PMSQ2 marksNeeds review
The CORRECT statement(s) about a competitive inhibitor of an enzyme is/are
Your answerSelect all correct options. You can choose more than one.
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 25
Open questionXL-PMSQ2 marksNeeds review
Among the following, the occupied molecular orbital(s) of carbon monoxide is/are
Your answerSelect all correct options. You can choose more than one.
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 26
Open questionXL-PMSQ2 marksNeeds review
The option(s) with the CORRECT order of ionisation energy is/are
Your answerSelect all correct options. You can choose more than one.
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
The
of
M HCl (aq.) is __________ (rounded off to two decimal places). Given,
.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 28
Open questionXL-QMCQ1 markNeeds review
Which one of the following immunoglobulins is known for its role in both allergy and asthma?
Your answerChoose one option.
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 29
Open questionXL-QMCQ1 markNeeds review
In which kind of organism, the glycerol moiety of lipid is found primarily in the R-configuration?
Your answerChoose one option.
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 30
Open questionXL-QMCQ1 markNeeds review
The Kenedy pathway of cellular phospholipid biosynthesis is associated with _____.
Your answerChoose one option.
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 answer