NEET Chemistry MCQ

Maximum students who appear for NEET give less importance to the chemistry section. But you must note that chemistry MCQ for NEET holds 25% weightage. So, with physics and biology, you should also devote equal time to this section.

NEET chemistry section can be classified into three parts – organic, inorganic, and physical, where 14-18 MCQs are on organic section, 10-18 MCQs on inorganic chemistry, and 15-20 physical chemistry MCQ questions.

Following are some unit-wise sample MCQs of NEET chemistry that may help in your preparation. Let us take a look!

Organic Chemistry

1. Lassaigne’s test for halogen demands the extract to be boiled with concentrated HNO₃. Why?

1. To increase AgCl’s precipitation. 

2. To escalate the product solubility of AgCl. 

3. For increasing concentration of NO₃-ions. 

4. Decomposition of NaCN and Na₂S.

2. Find the method suitable for separating a mixture consisting of benzoic acid and naphthalene.

1. Sublimation. 

2. Distillation. 

3. Chromatography. 

4. Crystallization.

These MCQs are just to give you an idea about the questions you can expect in the examination. For more questions like these, you can consult the online NEET organic chemistry questions pdf.

Next, let us begin with physical chemistry MCQ for NEET.

Chemical Bonding and Molecular Structure

3. Which of the following molecules have the highest dipole moment?

1. NF₃. 

2. CO₂. 

3. NH₃. 

4. CH₄.

4. Which of these pair’s central molecules have sp2 hybridization?

1. NH₃ and NO₂ 

2. NH₂ and H₂O 

3. BF₃ and NH₂ 

4. BF₃ and NO₂

Chemical Equilibrium

5. In the case of a reversible reaction, if the concentration of the reactants is increased, then what will happen to the equilibrium constant?

1. Increase. 

2. Remain unchanged. 

3. Decrease. 

4. Depends on the concentration.

6. If the following solutions are equimolar, then which one will record the highest pH?

1. BaCl₂. 

2. LiCl. 

3. AlCl₃. 

4. BeCl₂.

Some Fundamental Concepts of Chemistry

7. The Cv and Cp ratio of a gas X is 1.4. So how many atoms will the gas contain at NTP 11.2 L?

1. 3.01x1023. 

2. 6.02x1023. 

3. 1.2x1023. 

4. 2.01x1023.

8. A jar contains equal masses of hydrogen, oxygen, and methane at temperature of 27 degrees. Find their volume ratio.

1. 8:1:2 

2. 8:16:1 

3. 16:1:2 

4. 16:8:1

Environmental Chemistry

9. Normally, photochemical smog does not include

1. Ozone. 

2. Acrolein. 

3. Peroxyacetyl nitrate. 

4. Chlorofluorocarbons.

10. Nitrogen and oxygen naturally occur in air, but both of them do not react to create nitrogen oxides as:

1. Catalyst is needed for the reaction. 

2. It is an endothermic reaction. 

3. Nitrogen oxides are unstable. 

4. Nitrogen and oxygen cannot react with each other.

States of Matter

11. A jar having a pin-hole comprises equal moles of O₂ (g) and H₂ (g). Determine the fraction of oxygen gas that releases through the hole when 1/4th of hydrogen gas is released at the same time.

1. 1/4th 

2. 1/2th 

3. 3/8th 

4. 1/8th

12. Average molar K.E of CO and N₂ at the same temperature is

1. KE1<KE2. 

2. KE1>KE2. 

3. KE1=KE2. 

4. Less information is given.

Periodic Classification of Elements

13. For equal n values, penetration power of orbital obeys which order?

1. p >s>d>f.

2. s<p<d<f.

3. s=p=d=f.

4. f<d<p<s.

14. Two containers have M1-O-H and M2-O-H solutions separately. Choose their nature provided electronegativity of O = 3.5, H = 2.1, M1 = 3.4 and M2 = 1.2.

1. Acidic, basic. 

2. Acidic, acidic. 

3. Basic, acidic. 

4. Basic, basic.

Thermodynamics

15. The entropy and enthalpy change for the following reaction is 105J K-1 mol -1 and 30 KJ mol -1 respectively. So, calculate the temperature for the reaction to be in equilibrium.

Br₂ (I) + Cl₂ (g) -> 2BrCl (g)

1. 450K. 

2. 285.7K. 

3. 300K. 

4. 273K.

16. Three moles of an ideal gas spontaneously expand in a vacuum. Find the work done.

1. Infinite. 

2. 3-Joules. 

3. 9-Joules. 

4. Zero.

Atom Structure

17. A hydrogen atom’s excitation energy from the ground to the third state is:

1. 10.2 eV 

2. 12.75 eV 

3. 12.1 eV 

4. 0.85 eV

18. How many unpaired electrons does N2+ have?

1. Zero. 

2. One. 

3. Two. 

4. Three.

Redox Reaction

19. Choose the strongest oxidizing agent.

1. O₃ 

2. KMnO₄ 

3. H₂O₂ 

4. K₂Cr₂O₇

20. During a reaction of potassium chloride, sulphuric acid, and oxalic acid, whose oxidation number undergoes the highest change?

1. S 

2. H

3. C 

4. Cl

Physical chemistry includes a lot of chapters, so the range of physical chemistry MCQ questions is colossal, so you must prepare accordingly. Now let us progress with inorganic chemistry units.

Hydrocarbons

21. Which of the following processes is used to convert liquid hydrocarbons to gaseous hydrocarbons?

1. Cracking. 

2. Oxidation. 

3. Hydrolysis. 

4. Distillation.

22. A compound which has a bond angle equal to 180 degrees is:

1. Alkene. 

2. Cycloalkane. 

3. Alkane. 

4. Alkyne.

S Block Elements

23. Find out the amphoteric oxide among these oxides.

1. BaO 

2. MgO 

3. BeO 

4. CaO

24. Alkali metals’ tendency to drop their valence electrons makes them:

1. Strong oxidizing agent. 

2. Weak oxidizing agent. 

3. Strong reducing agent. 

4. Weak reducing agent.

P Block Elements

25. The structure of graphite is similar to

1. B 

2. BN 

3. B₄C 

4. B₂H₆

26. The number of bridging oxygen atoms in P₄O₁₀ is

1. 5 

2. 4 

3. 2 

4. 6

You can check the answers of the above chemistry MCQ for NEET in the following table.

Answers

Every Chapter is Important

When preparing for competitive exams, you are advised to study all the chapters in their entirety. You must not miss out on any topic and chapter, as it may prove to be detrimental for chemistry MCQ for NEET, and for other sections as well. Also, to attain a considerable score, you must go through physical, inorganic, and organic chemistry for NEET PDFs as they contain study materials and questions from previous years. 

Moreover, during this hectic schedule, candidates must take good care of themselves, maintain a proper diet and sleep adequately to stay fit. You must also not forget to take breaks in between.

What is the Weightage of the NEET Chemistry Syllabus?

The NEET chemistry syllabus is divided into three broad sections, that is, organic chemistry, inorganic chemistry, and physical chemistry. The total number of questions asked from inorganic chemistry is 19, from organic chemistry are 15 and from physical chemistry are 16. 

Weightage of Chapters from Physical Chemistry in NEET Examination

The questions from physical chemistry are maximum from chapters solid-state, electrochemistry, states of matter, chemical kinetics, and solutions. Approximately, 2 questions are asked from each of these chapters. The rest of the chapters like thermodynamics, surface chemistry, nuclear chemistry, atomic structure, mole concept, and ionic equilibrium contain 1 question each in the examination. 

Weightage of Chapters from Inorganic Chemistry in NEET Examination

5 questions are generally asked from chemical bonding and 3 questions from p-block elements. Other chapters like s-block, d-block, and f-block elements, metallurgy, and coordination chemistry have two questions each and in the case of environmental chemistry, 1 question is asked in the examination.

Weightage of chapters from Organic Chemistry in NEET Examination

In the case of organic chemistry, 4 questions are asked from hydrocarbons 3 questions from carbonyl compounds, and 2 questions from amines, haloalkanes, and haloarenes are asked in the question paper. The minimum number of questions are asked from topics like basic principles and techniques of organic chemistry, alcohol, phenol and ether, biomolecules, chemistry in everyday life, and polymers.