Amines and Diazonium Salts NEET MCQ & Practice Questions

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Amines and Diazonium Salts Revision Guide for NEET Chemistry

Amines and Diazonium Salts is part of NEET Chemistry preparation. A strong revision plan should combine concept review with exam-style questions so that definitions, relationships, calculations and exceptions are recalled accurately.

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Important Topics

Core definitions and principles
Important equations or relationships
Common applications and examples
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Exam-style multiple-choice questions
Error review and targeted revision

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Top 20 Amines and Diazonium Salts MCQs with Answers

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NEET Chemistry · Amines and Diazonium Salts · Very Very Hard

1. Which principle is essential when solving a quantitative problem in Amines and Diazonium Salts?

A. Ignoring limiting conditions
B. Conservation of mass and charge where applicable
C. Ignoring units
D. Assuming all coefficients are unity

Answer: B

Explanation: Mass and charge conservation are fundamental.

NEET Chemistry · Amines and Diazonium Salts · Very Very Hard

2. At equilibrium in a reversible system related to Amines and Diazonium Salts, which statement is correct?

A. Forward and reverse rates are equal
B. All molecular motion stops
C. Reactant and product concentrations must be equal
D. The catalyst is consumed

Answer: A

Explanation: Dynamic equilibrium has equal forward and reverse rates.

NEET Chemistry · Amines and Diazonium Salts · Very Very Hard

3. For a spontaneous process at constant T and P in a Amines and Diazonium Salts context, ΔG is:

A. Positive
B. Always zero
C. Always equal to ΔH
D. Negative

Answer: D

Explanation: Spontaneity at constant T,P requires ΔG<0.

NEET Chemistry · Amines and Diazonium Salts · Very Very Hard

4. Which statement about a catalyst in Amines and Diazonium Salts is correct?

A. It changes reaction enthalpy
B. It is always consumed
C. It lowers the activation barrier without changing K at fixed T
D. It changes ΔG°

Answer: C

Explanation: Catalysts affect kinetics, not equilibrium thermodynamics.

NEET Chemistry · Amines and Diazonium Salts · Very Very Hard

5. Oxidation in a redox step relevant to Amines and Diazonium Salts means:

A. Only gain of hydrogen
B. Loss of electrons
C. Gain of electrons
D. No oxidation-number change

Answer: B

Explanation: Oxidation is electron loss.

NEET Chemistry · Amines and Diazonium Salts · Very Very Hard

6. Reduction in a redox step relevant to Amines and Diazonium Salts means:

A. Gain of electrons
B. Loss of electrons
C. Increase in oxidation number
D. Only loss of hydrogen

Answer: A

Explanation: Reduction is electron gain.

NEET Chemistry · Amines and Diazonium Salts · Very Very Hard

7. A Lewis acid encountered in Amines and Diazonium Salts is an:

A. Electron-pair donor
B. Proton acceptor only
C. Anion only
D. Electron-pair acceptor

Answer: D

Explanation: Lewis acids accept electron pairs.

NEET Chemistry · Amines and Diazonium Salts · Very Very Hard

8. A Lewis base encountered in Amines and Diazonium Salts is an:

A. Cation only
B. Oxidising agent only
C. Electron-pair donor
D. Electron-pair acceptor

Answer: C

Explanation: Lewis bases donate electron pairs.

NEET Chemistry · Amines and Diazonium Salts · Very Very Hard

9. Which is a state function useful in Amines and Diazonium Salts?

A. Path length
B. Enthalpy
C. Heat
D. Work

Answer: B

Explanation: Enthalpy is path independent.

NEET Chemistry · Amines and Diazonium Salts · Very Very Hard

10. The relation between standard Gibbs energy and equilibrium constant is:

A. ΔG°=-RT lnK
B. ΔG°=RT lnK
C. ΔG°=-KRT
D. ΔG°=RT/K

Answer: A

Explanation: The standard thermodynamic relation is ΔG°=-RT lnK.

NEET Chemistry · Amines and Diazonium Salts · Very Very Hard

11. For a first-order kinetic process in Amines and Diazonium Salts, half-life equals:

A. k/0.693
B. 1/(k[A]0)
C. [A]0/(2k)
D. 0.693/k

Answer: D

Explanation: First-order t1/2=0.693/k.

NEET Chemistry · Amines and Diazonium Salts · Very Very Hard

12. The Arrhenius equation is:

A. k=EaRT
B. k=A/RT
C. k=Ae^(-Ea/RT)
D. k=Ae^(Ea/RT)

Answer: C

Explanation: Arrhenius equation relates k to activation energy and temperature.

NEET Chemistry · Amines and Diazonium Salts · Very Very Hard

13. For an ideal dilute solution relevant to Amines and Diazonium Salts, molarity is:

A. Moles solvent per litre
B. Moles solute per litre solution
C. Moles solute per kg solvent
D. Grams solute per mole solvent

Answer: B

Explanation: M=n/V(L).

NEET Chemistry · Amines and Diazonium Salts · Very Very Hard

14. For a weak acid, a larger Ka generally indicates:

A. A stronger acid
B. A weaker acid
C. No ionisation
D. A stronger conjugate acid

Answer: A

Explanation: Larger Ka means greater ionisation.

NEET Chemistry · Amines and Diazonium Salts · Very Very Hard

15. At 25°C, pH+pOH for aqueous solution is:

A. 7
B. 1
C. 0
D. 14

Answer: D

Explanation: pH+pOH=pKw=14 at 25°C.

NEET Chemistry · Amines and Diazonium Salts · Very Very Hard

16. For an electrochemical cell, oxidation occurs at:

A. Salt bridge
B. Electrolyte only
C. Anode
D. Cathode

Answer: C

Explanation: Oxidation occurs at the anode.

NEET Chemistry · Amines and Diazonium Salts · Very Very Hard

17. For an electrochemical cell, reduction occurs at:

A. Wire
B. Cathode
C. Anode
D. Salt bridge

Answer: B

Explanation: Reduction occurs at the cathode.

NEET Chemistry · Amines and Diazonium Salts · Very Very Hard

18. A positive E°cell implies:

A. ΔG°<0
B. ΔG°>0
C. K<1 necessarily
D. No spontaneous reaction

Answer: A

Explanation: ΔG°=-nFE°.

NEET Chemistry · Amines and Diazonium Salts · Very Very Hard

19. Higher bond order generally corresponds to:

A. Longer weaker bond
B. Longer stronger bond
C. No bond-length effect
D. Shorter stronger bond

Answer: D

Explanation: Higher bond order strengthens and shortens bonds.

NEET Chemistry · Amines and Diazonium Salts · Very Very Hard

20. A nucleophile in an organic reaction related to Amines and Diazonium Salts is:

A. Always positively charged
B. Always a radical
C. Electron-pair donor
D. Electron-pair acceptor

Answer: C

Explanation: Nucleophiles donate electron pairs.