Chemistry
GATE CY exam:gate PYQs
Build your understanding with focused practice from past exam papers.
Questions 351–360 of 650. Imported answers require independent review unless marked reviewed.
Question 16
Open questionCYMSQ1 markNeeds review
Acceptable wavefunctions for a quantum particle must be:
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Open questionCYMSQ1 markNeeds review
The characters of E, C₂, σᵥ, and σ′ᵥ symmetry operations, in this order, for valid irreducible representation(s) of the C₂ᵥ point group is/are:
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Open questionCYMSQ1 markNeeds review
The normal mode(s) of vibration of H₂O is/are:
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Open questionCYNAT1 markNeeds review
A reversible heat engine absorbs 20 kJ of heat from a source at 500 K and dissipates it to the reservoir at 400 K. The efficiency of the heat engine is ______ %.
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Open questionCYNAT1 markNeeds review
Among the following eight compounds,

the number of compound(s) which can exhibit stereoisomerism is ______.
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Open questionCYNAT1 markNeeds review
The Mo–Mo bond order in [η⁵-C₅H₅)Mo(CO)₂]₂ which obeys the 18-electron rule is ______.
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Open questionCYNAT1 markNeeds review
The change in enthalpy (ΔH) for the reaction
2 P (s) + 3 Br₂ (l) → 2 PBr₃ (l)
is −243 kJ. In this reaction, if the amount of phosphorus consumed is 3.1 g, the change in enthalpy (rounded off to two decimal places) is ______ kJ.
[Atomic Wt. of P = 31]
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Open questionCYNAT1 markNeeds review
The number of signal(s) in the
H NMR spectrum of the following compound 
recorded at 25 °C in CDCl₃ is __________.
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Open questionCYNAT1 markNeeds review
A 5 V battery delivers a steady current of 1.5 A for a period of 2 h. The total charge that has passed through the circuit is ______ Coulombs.
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Open questionCYNAT1 markNeeds review
The spin-only magnetic moment of [Co(H₂O)₆]²⁺ (rounded off to one decimal place) is ______ BM.
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