NEET UG 2023 Exam on May 7: NEET Chemistry Most Repeated Questions

NEET Chemistry Most Repeated Questions: The NEET conducting authorities have scheduled the NEET exam 2023 for May 7, 2023. Therefore, students must thoroughly practice the NEET Chemistry most repeated questions and Physics and Biology to score well on the exam.

Students must rote-learn their NCERT Chemistry books to score well. The syllabus has major portions from both Class XI and Class XII texts, and most NEET UG Chemistry important questions are inspired by the same.

Also Read: Subject-Wise NEET UG Syllabus 2023

NEET Chemistry Most Repeated Questions

Students must refer to the NEET Chemistry most repeated questions below to prepare accordingly.

Q. The correct bond order in the following species is:

1. O₂²⁺ 2^- 2^-
2. O₂+ 2^- 2²⁺
3. O₂^- 2⁺ 2²⁺
4. O₂²⁺ 2⁺ 2^-

Answer: 3. O₂- 2+ 2²+

Q. Which of the following diatomic molecular species has only π bonds according to Molecular orbital Theory

1. BE²
2. 0₂
3. N₂
4. C₂

Answer: 4. C₂

Q. Which of the following is pragmatic?

1. O₂^-
2. CN^-
3. NO⁺
4. CO

Answer: 1. O₂^-

Q. Which of the following has the minimum bond length?

1. O₂⁺
2. O₂^-
3. O₂^2-
4. O₂

Answer: 3. O₂^2-

Q. Four diatomic species are listed below. Identify the correct order in which the bond order is increasing in them:

1. NO-₂2₂-+₂
2. O₂^-2^2-2⁺
3. C²₂-+₂-₂
4. He⁺₂2^-2^2-

Q. Which of the following pairs of a chemical reaction is certain to result in a spontaneous reaction?

1. Exothermic and decreasing disorder
2. Endothermic and increasing disorder
3. Exothermic and increasing disorder
4. Endothermic and decreasing disorder

Answer: 3. Exothermic and increasing disorder

Q. The correct geometry and hybridisation for XeF4 are-

1. Square planar, sp³d²
2. Octahedral, sp³d²
3. trigonal bipyramidal, sp³d
4. planar triangle, sp³d³

Answer: 2. Octahydral, sp³d²

Q. The number of moles of hydrogen molecules required to produce 20 moles of ammonia through Haber's process is:

1. 40
2. 10
3. 20
4. 30

Answer: 4. 30

Q. In which of the following pairs the two species are isostructural?

1. SF₄ and XeF₄
2. SO₃^2- and NO₃^-
3. BF₃ and NF₃
4. BrO₃^- and XeO₃

Answer: 4. BrO₃^- and XeO₃

Q. In which of the following molecules/ions BF₃, NO₂^-, NH₂^- and H₂O, the central atom is sp² hybridised?

1. NO₂- and NH₂^-
2. NH₂^- and H₂O
3. NO₂^- and H₂O
4. BF₃ and NO₂^-

Answer: 4. BF₃ and NO₂^-

Q. In which of the following molecules the central atom does not have sp3 hybridization?

1. CH₄
2. SF₄
3. BF^-₄
4. NH⁺₄

Answer: 2. SF₄

Q. In the structure of CIF3, the number of lone pairs of electrons on central atom 'CI' is:

1. One
2. Three
3. Four
4. Two

Answer: 4. Two

Q. The solubility of a sparingly soluble salt AX₂ is 3.2 x 10 ^-11. Its solubility (in mol/L) is

1. 5.6 x 10^-6
2. 3.1 x 10^-4
3. 2 x 10^-4
4. 4 x 10^-4

Answer: 3. 2 x 10^-4

Q. Solubility of MX₂ type electrolytes is 0.5  10^-4 mol/L, then find out K_sp of electrolytes.

1. 5 x 10^-12
2. 25 x 10^-10
3. 1 x 10^-13
4. 5 x 10^-13

Answer: 4. 5 x 10^-13

Q. Lithium has a bcc structure. Its density is 530 kg m^-3, and its atomic mass is 6.94 g mol^-1. Calculate the edge length of a unit cell of Lithium metal. (NA = 6.02 x 10²³ mol^-1)

1. 264 pm
2. 154 pm
3. 352 pm
4. 527 pm

Answer: 3. 352 pm

Q. In which case is the number of molecules of water maximum?

1. 18ml of water
2. 10^-3 mol of water
3. 0.00224L of water vapours at 1 atm and 273 K
4. 0.18 h of Water

Answer: 1.18ml of water

Q. Which has the maximum number of molecules of the following?

1. 44gCO₂
2. 48gO₃
3. 8gH₂
4. 64gSO₂

Q. A magnetic moment of 1.73 BM will be shown by one of the following:

1. [Ni(CN)₄]^2-
2. TiCI₄
3. [CoCI₆]^4-
4. [Cu(NH₃)₄]²⁺

Answer: 4. [Cu(NH₃)₄]²⁺

The NEET UG 2023 exam will be 3 hours long and be held in pen and paper mode. The students will be asked 200 MCQ questions from the NEET UG 2023 syllabus, out of which the students must attempt 180. The NEET Chemistry most repeated questions will form a major part of these questions.

To crack all the NEET UG Chemistry Important Questions, the students must practice the previous year's questions, mock tests, and NCERT. Additionally, it would be easier to answer NEET 2023 Chemistry questions if they have been practised well enough.