GATE CY kind:question PYQs & Answers — Page 25

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Questions 241–250 of 650. Imported answers require independent review unless marked reviewed.

Topic practice 650 questionsPage 25 of 65

In the scheme below,

P₂

represents the intensity of the light absorbed. Assuming that the quantum yield of the first step is one, the steady state concentration of Q is given by

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Product(s) formed in the given reaction sequence is(are)

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Diagram for Chemistry question 47 (figure 2)

Diagram for Chemistry question 47 (figure 3)

Diagram for Chemistry question 47 (figure 4)

Diagram for Chemistry question 47 (figure 5)

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Product(s) formed in the reaction below is(are)

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Diagram for Chemistry question 48 (figure 2)

Diagram for Chemistry question 48 (figure 3)

Diagram for Chemistry question 48 (figure 4)

Diagram for Chemistry question 48 (figure 5)

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The stereomer(s) of G giving the depicted product is(are)

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Diagram for Chemistry question 49 (figure 2)

Diagram for Chemistry question 49 (figure 3)

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Diagram for Chemistry question 49 (figure 5)

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Product(s) formed in the given reaction sequence is(are)

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Diagram for Chemistry question 50 (figure 2)

Diagram for Chemistry question 50 (figure 3)

Diagram for Chemistry question 50 (figure 4)

Diagram for Chemistry question 50 (figure 5)

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The reaction(s) in which inversion of configuration occur(s) is(are)

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Diagram for Chemistry question 51 (figure 2)

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The correct statement(s) regarding myoglobin (Mb) and haemoglobin (Hb) is(are)

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At low partial pressure of O₂ (e.g., 5 kPa), the O₂ affinity of Hb lowers upon lowering the pH

Binding of the first O₂ molecule to Hb results in lower affinity for the binding of second O₂ molecule

Metal center in deoxy-Mb is low-spin whereas it is high-spin in the case of oxy-Mb

One end of O₂ binds to the metal center in oxy-Mb and the other end of the bound O₂ is H-bonded with imidazole-NH of a distal histidine

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The correct statement(s) regarding Co₂(CO)₈ is(are)

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It reacts with Na to give Na[Co(CO)₄]

It contains three bridging carbonyls

It can be prepared by reductive carbonylation of Co(OAc)₂·4H₂O

Two isomers exist in hexane solution

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The compound(s) having [Xe]4f¹ configuration is(are) (Given the atomic numbers Ce:58, Lu:71, Pr:59 and Nd:60)

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Na₃[Ce(NO₃)₆]

Na₃[LuCl₆]

PrO₂

Nd(NR₂)₃ (R = SiMe₃)

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The correct statement(s) for XeF₂ is(are)

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Its bonding is best explained by classical 2-centered-2-electron bonds

Its bonding is best explained by a non-classical 3-centered-4-electron bond

It contains nine lone pairs of electrons

Its point group is D∞h

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GATE CY kind:question PYQs

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