Chemistry Quiz - Competitive Exams NEET

Free practice quiz: Chemistry (Competitive Exams NEET). 90 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

This Competitive Exams NEET practice quiz has 90 multiple-choice questions on Chemistry. Try the 5 sample questions below (tap an option to check yourself), then play the full quiz online. No sign-up needed.

Sample questions

1. Which of the following is the correct electronic configuration of Cr (Z=24)?

   1. [Ar] 4s⁰ 3d⁶
   2. [Ar] 4s² 3d⁵
   3. [Ar] 4s² 3d⁴
   4. [Ar] 4s¹ 3d⁵
   Show answer

   Answer: D. [Ar] 4s¹ 3d⁵

2. The product formed when ethanol is treated with hot concentrated H₂SO₄ at 170°C is:

   1. Ethene
   2. Diethyl ether
   3. Ethanoic acid
   4. Ethanal
   Show answer

   Answer: A. Ethene

3. The coordination number and oxidation state of cobalt in [Co(en)₂Cl₂]⁺ are, respectively:

   1. 4 and +1
   2. 6 and +1
   3. 4 and +3
   4. 6 and +3
   Show answer

   Answer: D. 6 and +3

4. The product of the reaction between an ester and a Grignard reagent followed by hydrolysis is:

   1. Carboxylic acid
   2. Tertiary alcohol
   3. Secondary alcohol
   4. Primary alcohol
   Show answer

   Answer: B. Tertiary alcohol

5. In the reaction of acetaldehyde with Fehling's solution, the product formed is:

   1. Acetic acid
   2. Acetone
   3. Silver mirror
   4. Red precipitate of Cu₂O
   Show answer

   Answer: D. Red precipitate of Cu₂O

More questions in this quiz

Answers and explanations are in the full quiz.

1. The number of unpaired electrons in Fe³⁺ (Z=26) is:
2. Which of the following molecules has a net dipole moment of zero?
3. According to VSEPR theory, the shape of XeF₄ is:
4. The correct order of bond angles is:
5. Which of the following has the highest first ionization enthalpy?
6. The IUPAC name of the compound CH₃–CH(OH)–CH₂–CHO is:
7. Which reagent converts an aldehyde to a primary alcohol?
8. The pH of 0.01 M HCl solution at 25°C is:
9. For a first-order reaction, the half-life is independent of:
10. The number of moles of electrons required to reduce 1 mole of MnO₄⁻ to Mn²⁺ in acidic medium is:
11. Which of the following colligative properties is used to determine the molar mass of polymers?
12. The entropy change for a spontaneous process at constant T and P is:
13. Which of the following is an example of a disproportionation reaction?
14. The correct IUPAC name of [Co(NH₃)₄Cl₂]Cl is:
15. Which of the following lanthanoid ions is diamagnetic?
16. The major product of the reaction of phenol with bromine water is:
17. Which of the following will undergo SN1 reaction fastest?
18. The number of stereoisomers possible for a compound with two dissimilar chiral centres is:
19. Which of the following is the strongest base in aqueous solution?
20. The oxidation state of sulphur in H₂SO₅ (peroxomonosulphuric acid) is:
21. Which of the following gases is not responsible for the greenhouse effect?
22. The C–C bond length in benzene is:
23. The bond order of the O₂⁻ (superoxide) ion is:
24. Which of the following statements is not correct about the shape of CH₄ according to VSEPR theory?
25. Which of the following compounds is aromatic?
26. The hybridisation of the central atom in SF₄ is:
27. Which of the following is the correct IUPAC name of the compound (CH₃)₃C–CH₂–OH?
28. The reaction of a ketone with a Grignard reagent followed by hydrolysis gives:
29. For a zero-order reaction, the unit of the rate constant is:
30. The number of faradays required to deposit 1 mole of aluminium from molten Al₂O₃ is:
31. Which of the following aqueous solutions has the highest boiling point at 1 atm?
32. For the reaction N₂(g) + 3H₂(g) ⇌ 2NH₃(g), the relationship between Kp and Kc is:
33. Which of the following statements about a catalyst is correct?
34. Which of the following is a homogeneous mixture?
35. The compound that undergoes an E2 elimination most readily with a strong base is:
36. Which of the following is the correct order of acidic strength?
37. The reaction of benzene with acetyl chloride in the presence of anhydrous AlCl₃ is an example of:
38. The degree of dissociation of a weak monobasic acid with Ka = 1 × 10⁻⁵ in a 0.1 M solution is:
39. The number of neutrons in one atom of ₁₇Cl³⁵ is:
40. The correct order of reactivity towards nucleophilic addition is:
41. Which of the following is the major product when propene reacts with HBr in the presence of peroxides?
42. The number of sigma and pi bonds in benzene (C6H6) are respectively:
43. In the reaction of an aldehyde with HCN, the cyanohydrin formed has a carbon chain that is:
44. The limiting molar conductivity of an electrolyte is obtained by extending the plot of molar conductivity versus concentration to:
45. Which quantum number specifies the orientation of an orbital in space?
46. The product formed when acetone is treated with iodine and sodium hydroxide is:
47. The entropy change when a solid melts at its melting point is:
48. Which of the following is the correct order of dipole moments?
49. The reaction of an alkyl halide with sodium alkoxide to form an ether is known as:
50. The number of ionisation isomers possible for the complex [Co(NH3)4Cl2]NO2 is:
51. Which of the following is not a characteristic of a transition element?
52. For a reaction, the rate constant k is found to double when temperature increases from 300 K to 310 K. The activation energy is approximately:
53. The compound that gives a positive Fehling's test is:
54. The correct order of hydration enthalpy of alkali metal ions is:
55. Which of the following statements about the Arrhenius equation is false?
56. The product formed when aniline is treated with bromine water is:
57. The spin-only magnetic moment of a complex with three unpaired electrons is:
58. Which of the following will show optical isomerism?
59. The reagent used for the conversion of a primary alcohol to an aldehyde without over-oxidation is:
60. The pH of a buffer solution containing 0.1 M acetic acid and 0.1 M sodium acetate (pKa = 4.76) is:

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