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GATE - Chemistry Mock Tests

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GATE
Chemistry Mock Test 1

Questions:: 30
Duration:: 83 minutes
+1 for correct , -1 for wrong
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GATE
Chemistry Mock Test 2

Questions:: 30
Duration:: 83 minutes
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GATE
Chemistry Mock Test 3

Questions:: 30
Duration:: 83 minutes
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GATE
Chemistry Mock Test 4

Questions:: 30
Duration:: 83 minutes
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GATE
Chemistry Mock Test 5

Questions:: 30
Duration:: 83 minutes
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Practice tests for Topics/Chapters

Sample Questions

GATE Chemistry
In the retrosynthetic analysis of 1-phenylbutan-1-one (C₆H₅COCH₂CH₂CH₃, also known as butyrophenone), which of the following represents the most logical synthetic disconnection using the Friedel-Crafts acylation strategy? (Consider the directness of the approach, the regioselectivity of electrophilic aromatic substitution, and the compatibility of the reagents.)
A Disconnect between the carbonyl carbon and the α-carbon: C₆H₅CO⁺ + CH₃CH₂CH₂Cl → C₆H₅COCH₂CH₂CH₃ via Friedel-Crafts acylation with butanoyl chloride and AlCl₃
B Disconnect between the phenyl ring and the α-carbon: C₆H₅⁻ + CH₃CH₂CH₂COCl → C₆H₅COCH₂CH₂CH₃ via nucleophilic aromatic substitution
C Disconnect the phenyl ring from the carbonyl: C₆H₅Cl + CH₃CH₂CH₂CO₂H → C₆H₅COCH₂CH₂CH₃ via direct coupling
D Disconnect at the carbonyl: C₆H₅CHO + CH₃CH₂CH₂MgBr → C₆H₅COCH₂CH₂CH₃ via Grignard addition followed by oxidation
GATE Chemistry
For a canonical ensemble, the partition function Z is related to the Helmholtz free energy A by which of the following relations? (Here, k is the Boltzmann constant and T is the temperature.)
A A = −kT ln Z
B A = kT ln Z
C A = −RT/Z
D A = kT/Z
EAPCET Chemistry
According to Faraday's second law of electrolysis, if the same quantity of electricity is passed through AgNO₃ and CuSO₄ solutions, the ratio of masses of Ag and Cu deposited is:___SEQ___31
A Equivalent mass of Ag : Equivalent mass of Cu
B Molar mass of Ag : Molar mass of Cu
C 1 : 1
D Atomic mass of Ag : Atomic mass of Cu
EAPCET Chemistry
For a reaction to be spontaneous at all temperatures, which condition must be satisfied?
A Δ H < 0 and Δ S < 0
B Δ H > 0 and Δ S > 0
C Δ H > 0 and Δ S < 0
D Δ H < 0 and Δ S > 0
CUET Chemistry
The correct order of acidic strength for the given oxides is:
A Al₂O₃ < SiO₂ < P₄O₁₀ < SO₃
B SO₃ < P₄O₁₀ < SiO₂ < Al₂O₃
C SiO₂ < Al₂O₃ < SO₃ < P₄O₁₀
D P₄O₁₀ < SO₃ < Al₂O₃ < SiO₂
EAPCET Chemistry
A compound contains C = 40%, H = 6.7%, and O = 53.3% by mass. If its molar mass is 180 g/mol, what is its molecular formula? (C = 12, H = 1, O = 16)
A C₆H₁₂O₆
B C₅H₁₀O₅
C C₃H₆O₃
D C₁₂H₂₂O₁₁
CUET Chemistry
The half-life of a second-order reaction with rate constant k = 0.1 M⁻¹s⁻¹ and initial concentration [A]₀ = 0.5 M is:
A 20 seconds
B 10 seconds
C 50 seconds
D 40 seconds
Class 12 Chemistry
Which of the following is the correct order of magnetic properties for the given species?
A [Fe(CN)6]4- (diamagnetic) < [Fe(H2O)6]2+ (paramagnetic) < [Ni(CN)4]2- (diamagnetic)
B [Ni(CN)4]2- (diamagnetic) < [Fe(CN)6]4- (diamagnetic) < [Fe(H2O)6]2+ (paramagnetic)
C [Fe(H2O)6]2+ (diamagnetic) < [Fe(CN)6]4- (paramagnetic) < [Ni(CN)4]2- (diamagnetic)
D All are paramagnetic

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