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.

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

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