Unit-wise 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 MCQ’s are on organic section, 10-18 MCQ’s on inorganic chemistry and 15-20 physical chemistry MCQ questions.
Following are some unit-wise sample MCQ’s of NEET chemistry that may help in your preparation. Let us take a look!
1. Lassaigne’s test for halogen demands the extract to be boiled with concentrated HNO₃. Why?
a) To increase AgCl’s precipitation. b) To escalate the product solubility of AgCl. c) For increasing concentration of NO₃-ions. d) Decomposition of NaCN and Na₂S.
2. Find the method suitable for separating a mixture consisting of benzoic acid and naphthalene.
a) Sublimation. b) Distillation. c) Chromatography. d) Crystallisation.
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 from 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?
a) NF₃. b) CO₂. c) NH₃. d) CH₄.
4. Which of these pair’s central molecule have sp2 hybridisation?
a) NH₃ and NO₂ b) NH₂ and H₂O c) BF₃ and NH₂ d) BF₃ and NO₂
5. In case of a reversible reaction, if the concentration of the reactants is increased, then what will happen to the equilibrium constant?
a) Increase. b) Remain unchanged. c) Decrease. d) Depend on the concentration.
6. If the following solutions are equimolar, then which one will record the highest pH?
a) BaCl₂. b) LiCl. c) AlCl₃. d) BeCl₂.
Some Fundamental Concepts of Chemistry
7. Cv and Cp ratio of a gas X is 1.4. So how many atoms will the gas contain at NTP 11.2 L?
a) 3.01x1023. b) 6.02x1023. c) 1.2x1023. d) 2.01x1023.
8. A jar contains equal masses of hydrogen, oxygen and methane at temperature 27 degrees. Find their volume ratio.
a) 8:1:2 b) 8:16:1 c) 16:1:2 d) 16:8:1
9. Normally, photochemical smog does not include:
a) Ozone. b) Acrolein. c) Peroxyacetyl nitrate. d) Chlorofluorocarbons.
10. Nitrogen and oxygen naturally occur in air, but both of them do not react to create nitrogen oxides as:
a) Catalyst is needed for reaction. b) It is an endothermic reaction. c) Nitrogen oxides are unstable. d) 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 releases at the same time.
a) 1/4th b) 1/2th c) 3/8th d) 1/8th
12. Average molar K.E of CO and N₂ at the same temperature is:
a) KE1<KE2. b) KE1>KE2. c) KE1=KE2. d) Less information given.
Periodic Classification of Elements
13. For equal n values, penetration power of orbital obeys which order?
a) p >s>d>f.
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.
a) Acidic, basic. b) Acidic, acidic. c) Basic, acidic. d) Basic, basic.
15. The entropy and enthalpy change for the following reaction is 105J K-1 mol -1 and 30KJ mol -1 respectively. So, calculate the temperature for the reaction to be in equilibrium.
Br₂ (I) + Cl₂ (g) -> 2BrCl (g)
a) 450K. b) 285.7K. c) 300K. d) 273K.
16. Three moles of an ideal gas spontaneously expands in a vacuum. Find the work done.
a) Infinite. b) 3-Joules. c) 9-Joules. d) Zero.
17. A hydrogen atom’s excitation energy from ground to third state is:
a) 10.2 eV b) 12.75 eV c) 12.1 eV d) 0.85 eV
18. How many unpaired electrons does N2+ have?
a) Zero. b) One. c) Two. d) Three.
19. Choose the strongest oxidising agent.
a) O₃ b) KMnO₄ c) H₂O₂ d) K₂Cr₂O₇
20. During a reaction of potassium chloride, sulphuric acid and oxalic acid, whose oxidation number undergoes highest change?
a) S b) H c) C d) 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.
21. Which of the following process is used to convert liquid hydrocarbons to gaseous hydrocarbons?
a) Cracking. b) Oxidation. c) Hydrolysis. d) Distillation.
22. A compound which has a bond angle equal to 180 degrees is:
a) Alkene. b) Cycloalkane. c) Alkane. d) Alkyne.
S Block Elements
23. Find out the amphoteric oxide among these oxides.
a) BaO b) MgO c) BeO d) CaO
24. Alkali metals’ tendency to drop their valence electrons makes them:
a) Strong oxidising agent. b) Weak oxidising agent. c) Strong reducing agent. d) Weak reducing agent.
P Block Elements
25. The structure of graphite is similar to:
a) B b) BN c) B₄C d) B₂H₆
26. The number of bridging oxygen atoms in P₄O₁₀ is:
a) 5 b) 4 c) 2 d) 6
You can check the answers of the above chemistry MCQ for NEET in the following table.
Every Chapter is Important
When preparing for competitive exams, you are advised to study all the chapters to their entirety. You must not miss out 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.
1. Which are the Best Textbooks for Chemistry MCQ for NEET?
Ans. Some of the best chemistry MCQ for NEET books are NCERT Chemistry for both standards XI and XII, Pradeep’s Chemistry, Arihant R. K. Gupta, G. R. Bathla’s Chemistry and others.
2. How to Prepare Well for NEET Chemistry?
Ans. Apart from studying the textbooks, candidates must revise previous year’s question paper and also study from basic chemistry objective questions and answers PDF, which are available online.
3. Which are the Do or Die Topics in Chemistry for NEET 2020?
Ans. For competitive exams like NEET, students are advised to study the whole syllabus. Hence, all the chapters are equally important.