Q. What is the product formed when 1-bromopropane reacts with sodium hydroxide in ethanol? (2021)
A.
Propene
B.
1-Propanol
C.
2-Propanol
D.
Bromopropane
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Solution
1-bromopropane reacts with sodium hydroxide in ethanol to form 1-propanol through a nucleophilic substitution reaction.
Correct Answer: B — 1-Propanol
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Q. What is the product of electrolysis of water?
A.
Hydrogen and Oxygen
B.
Hydrogen and Carbon
C.
Oxygen and Nitrogen
D.
Hydrogen and Chlorine
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Solution
The products of electrolysis of water are hydrogen and oxygen.
Correct Answer: A — Hydrogen and Oxygen
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Q. What is the product of the complete combustion of propane?
A.
CO2 and H2O
B.
CO and H2O
C.
C and H2
D.
C2H4
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Solution
The complete combustion of propane produces carbon dioxide (CO2) and water (H2O).
Correct Answer: A — CO2 and H2O
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Q. What is the product of the oxidation of 2-Propanol? (2022)
A.
Acetone
B.
Ethanol
C.
Propanoic acid
D.
Methanol
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Solution
2-Propanol oxidizes to form Acetone, which is a ketone.
Correct Answer: A — Acetone
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Q. What is the product of the oxidation of a primary alcohol? (2020) 2020
A.
Aldehyde
B.
Ketone
C.
Carboxylic acid
D.
Alkene
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Solution
The oxidation of a primary alcohol first produces an aldehyde, which can further oxidize to a carboxylic acid.
Correct Answer: A — Aldehyde
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Q. What is the product of the oxidation of a primary alcohol? (2023) 2023
A.
Aldehyde
B.
Ketone
C.
Carboxylic acid
D.
Alkane
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Solution
The oxidation of a primary alcohol results in the formation of an aldehyde.
Correct Answer: A — Aldehyde
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Q. What is the product of the oxidation of ethanol?
A.
Acetic acid
B.
Methanol
C.
Butanoic acid
D.
Propanoic acid
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Solution
Ethanol oxidizes to acetic acid when reacted with an oxidizing agent.
Correct Answer: A — Acetic acid
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Q. What is the product of the oxidation of propan-2-ol?
A.
Propanal
B.
Acetone
C.
Propanoic acid
D.
Butan-2-one
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Solution
Propan-2-ol oxidizes to form Acetone (CH3COCH3).
Correct Answer: B — Acetone
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Q. What is the product of the reaction between 1-bromobutane and sodium hydroxide in ethanol? (2021)
A.
Butanol
B.
Butyl bromide
C.
Butyl ether
D.
Butyric acid
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Solution
The reaction of 1-bromobutane with sodium hydroxide in ethanol leads to the formation of butanol through nucleophilic substitution.
Correct Answer: A — Butanol
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Q. What is the product of the reaction between 1-bromopropane and sodium hydroxide in ethanol?
A.
Propene
B.
1-Propanol
C.
2-Propanol
D.
No reaction
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Solution
1-bromopropane reacts with sodium hydroxide in ethanol to form 1-Propanol via nucleophilic substitution.
Correct Answer: B — 1-Propanol
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Q. What is the product of the reaction between ammonia and ethyl bromide?
A.
Ethylamine
B.
Diethylamine
C.
Triethylamine
D.
Ammonium bromide
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Solution
The reaction produces Ethylamine as ammonia acts as a nucleophile and replaces the bromine atom.
Correct Answer: A — Ethylamine
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Q. What is the product of the reaction between an amine and an acid?
A.
Amide
B.
Salt
C.
Ester
D.
Alcohol
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Solution
The reaction between an amine and an acid produces a salt, as the amine acts as a base and accepts a proton from the acid.
Correct Answer: B — Salt
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Q. What is the product of the reaction between benzaldehyde and phenylmagnesium bromide?
A.
Benzyl alcohol
B.
Benzophenone
C.
Diphenylmethanol
D.
Benzene
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Solution
The reaction produces Diphenylmethanol when benzaldehyde reacts with phenylmagnesium bromide.
Correct Answer: C — Diphenylmethanol
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Q. What is the product of the reduction of Cr2O7^2- in acidic medium?
A.
CrO4^2-
B.
Cr^3+
C.
CrO3
D.
CrO2
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Solution
In acidic medium, Cr2O7^2- is reduced to Cr^3+.
Correct Answer: B — Cr^3+
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Q. What is the rate constant of a first-order reaction if the half-life is 10 minutes? (2021)
A.
0.0693 min⁻¹
B.
0.1 min⁻¹
C.
0.693 min⁻¹
D.
0.5 min⁻¹
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Solution
For a first-order reaction, k = 0.693 / t₁/₂. Here, t₁/₂ = 10 min, so k = 0.693 / 10 = 0.0693 min⁻¹.
Correct Answer: A — 0.0693 min⁻¹
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Q. What is the rate law expression for a reaction that is first order with respect to A and second order with respect to B? (2022)
A.
Rate = k[A][B]^2
B.
Rate = k[A]^2[B]
C.
Rate = k[A]^2[B]^2
D.
Rate = k[A][B]
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Solution
The rate law for a reaction is determined by the order with respect to each reactant. For a first order with respect to A and second order with respect to B, the rate law is Rate = k[A][B]^2.
Correct Answer: A — Rate = k[A][B]^2
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Q. What is the rate law expression for a reaction that is first order with respect to reactant A? (2022)
A.
Rate = k[A]
B.
Rate = k[A]^2
C.
Rate = k[A]^0
D.
Rate = k[A]^[1/2]
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Solution
For a first order reaction, the rate law is directly proportional to the concentration of the reactant, hence Rate = k[A].
Correct Answer: A — Rate = k[A]
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Q. What is the rate law expression for a reaction that is second order with respect to reactant A? (2023)
A.
Rate = k[A]
B.
Rate = k[A]^2
C.
Rate = k[A]^2[B]
D.
Rate = k[A][B]
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Solution
For a second order reaction with respect to A, the rate law is expressed as Rate = k[A]^2.
Correct Answer: B — Rate = k[A]^2
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Q. What is the rate law for a reaction that is first order with respect to A and second order with respect to B? (2022) 2022
A.
Rate = k[A][B]^2
B.
Rate = k[A]^2[B]
C.
Rate = k[A]^2[B]^2
D.
Rate = k[A][B]
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Solution
The rate law is determined by the order of the reaction with respect to each reactant. For first order in A and second order in B, the rate law is Rate = k[A][B]^2.
Correct Answer: A — Rate = k[A][B]^2
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Q. What is the rate law for a reaction that is second order with respect to reactant A? (2023)
A.
Rate = k[A]
B.
Rate = k[A]^2
C.
Rate = k[A]^2[B]
D.
Rate = k[A][B]
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Solution
For a second order reaction with respect to A, the rate law is expressed as Rate = k[A]^2.
Correct Answer: B — Rate = k[A]^2
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Q. What is the reduction potential of the half-reaction 2H⁺ + 2e⁻ → H₂?
A.
0.00 V
B.
0.34 V
C.
0.76 V
D.
1.23 V
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Solution
The standard reduction potential for 2H⁺ + 2e⁻ → H₂ is 0.00 V.
Correct Answer: D — 1.23 V
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Q. What is the relationship between Gibbs free energy (ΔG) and cell potential (E) in electrochemistry?
A.
ΔG = -nFE
B.
ΔG = nFE
C.
ΔG = -E/nF
D.
ΔG = E/nF
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Solution
The relationship is ΔG = -nFE, where n is the number of moles of electrons transferred.
Correct Answer: A — ΔG = -nFE
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Q. What is the relationship between the rate of reaction and temperature according to the Arrhenius equation? (2022)
A.
Inversely proportional
B.
Directly proportional
C.
Exponential
D.
Linear
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Solution
According to the Arrhenius equation, the rate of reaction increases exponentially with temperature.
Correct Answer: C — Exponential
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Q. What is the shape of a molecule with a tetrahedral geometry? (2023)
A.
Linear
B.
Trigonal planar
C.
Tetrahedral
D.
Octahedral
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Solution
A tetrahedral geometry has a central atom bonded to four other atoms, forming a shape like a pyramid with a triangular base.
Correct Answer: C — Tetrahedral
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Q. What is the shape of the methane (CH4) molecule? (2023)
A.
Linear
B.
Trigonal planar
C.
Tetrahedral
D.
Octahedral
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Solution
Methane (CH4) has a tetrahedral shape due to the four pairs of bonding electrons around the central carbon atom.
Correct Answer: C — Tetrahedral
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Q. What is the shape of the s orbital? (2021) 2021
A.
Spherical
B.
Dumbbell
C.
Double dumbbell
D.
Linear
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Solution
The s orbital has a spherical shape.
Correct Answer: A — Spherical
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Q. What is the simplest ketone?
A.
Acetaldehyde
B.
Acetone
C.
Butanone
D.
Propionaldehyde
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Solution
Acetone (CH3COCH3) is the simplest ketone.
Correct Answer: B — Acetone
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Q. What is the specific heat at constant volume (Cv) for a monatomic ideal gas? (2019)
A.
3R/2
B.
5R/2
C.
R
D.
2R
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Solution
For a monatomic ideal gas, the specific heat at constant volume (Cv) is 3R/2.
Correct Answer: A — 3R/2
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Q. What is the specific heat capacity of water at constant pressure (C_p)? (2020)
A.
4.18 J/g°C
B.
2.09 J/g°C
C.
1.00 J/g°C
D.
3.00 J/g°C
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Solution
The specific heat capacity of water at constant pressure is approximately 4.18 J/g°C.
Correct Answer: A — 4.18 J/g°C
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Q. What is the specific heat capacity of water? (2021) 2021
A.
1 J/g°C
B.
4.18 J/g°C
C.
2 J/g°C
D.
0.9 J/g°C
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Solution
The specific heat capacity of water is approximately 4.18 J/g°C.
Correct Answer: B — 4.18 J/g°C
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