NeetVictoryQuestion 26
In hydrogen spectrum, the shortest wavelength in the Balmer series is λ. The shortest wavelength in the Bracket series is
- A 2λ
- B 4λ
- C 9λ
- D 16λ
Answer: B. 4λ
Why: Key-based; see question image.
NEET 2023 Question Paper: Chapter-wise Questions and Sample Solutions (Set E1)
The NEET 2023 paper had 199 questions across Biology, Physics and Chemistry, marked +4 for a correct answer and −1 for a wrong one. This page shows what it contained, which chapters it drew on, and 10 of its questions with answers.
NEET 2023 paper at a glance
| Exam | NEET 2023, Set E1 |
|---|---|
| Questions | 199 (100 Biology, 49 Physics, 50 Chemistry) |
| Duration | 3 hours 20 minutes |
| Marking | +4 for a correct answer, −1 for a wrong answer |
| How many to answer | The paper has 200 questions in two sections for each subject. Section A is compulsory, and in Section B students answer any 10 of 15, so 180 questions count. |
Sit the full NEET 2023 paper
Open in the appAll questions, solutions and the All-India rank for this paper are in the app.
Which chapters did NEET 2023 ask from?
Questions are counted by the chapter they test. The chapters that carried the most were Principles of Inheritance and Variation (9), Human Health and Diseases (9), Cell Cycle and Cell Division (6). Use the counts to see where this paper put its weight, and click a chapter for practice questions.
Biology: 100 questions
Show the other 21 chapters
Physics: 49 questions
Show the other 15 chapters
Chemistry: 50 questions
Show the other 17 chapters
Sample questions from NEET 2023 with answers
A spread of 10 questions from the paper, chosen across the three subjects. The full paper is in the app.
Question 34
The net magnetic flux through any closed surface is
- A Zero
- B Positive
- C Infinity
- D Negative
Answer: A. Zero
Why: Gauss's law for magnetism: the net magnetic flux through any closed surface is zero.
Question 54
In Lassaigne's extract of an organic compound, both nitrogen and sulphur are present, which gives blood red colour with Fe³⁺ due to the formation of
- A Fe₄[Fe(CN)₆]₃·xH₂O
- B NaSCN
- C [Fe(CN)₅NOS]⁴⁻
- D [Fe(SCN)]²⁺
Answer: D. [Fe(SCN)]²⁺
Why: Key-based; see question image.
Question 66
The number of σ bonds, π bonds and lone pair of electrons in pyridine, respectively are:
- A 11, 2, 0
- B 12, 3, 0
- C 11, 3, 1
- D 12, 2, 1
Answer: C. 11, 3, 1
Why: Key-based; see question image.
Question 83
The right option for the mass of CO₂ produced by heating 20 g of 20% pure limestone is (Atomic mass of Ca = 40) [CaCO₃ —1200 K→ CaO + CO₂]
- A 1.12 g
- B 1.76 g
- C 2.64 g
- D 1.32 g
Answer: B. 1.76 g
Why: Key-based; see question image.
Question 107
Among ‘The Evil Quartet’, which one is considered the most important cause driving extinction of species?
- A Habitat loss and fragmentation
- B Over exploitation for economic gain
- C Alien species invasions
- D Co-extinctions
Answer: A. Habitat loss and fragmentation
Why: Habitat loss and fragmentation is the most important of the Evil Quartet causes of extinction.
Question 120
Expressed Sequence Tags (ESTs) refers to
- A All genes that are expressed as RNA.
- B All genes that are expressed as proteins.
- C All genes whether expressed or unexpressed.
- D Certain important expressed genes.
Answer: A. All genes that are expressed as RNA.
Why: Key-based; see question image.
Question 141
Given below are two statements : One labelled as Assertion A and the other labelled as Reason R : Assertion A : In gymnosperms the pollen grains are released from the microsporangium and carried by air currents. Reason R : Air currents carry the pollen grains to the mouth of the archegonia where the male gametes are discharged and pollen tube is not formed. In the light of the above statements, choose the correct answer from the options given below :
- A Both A and R are true and R is the correct explanation of A
- B Both A and R are true but R is NOT the current explanation of A
- C A is true but R is false
- D A is false but R is true
Answer: C. A is true but R is false
Why: Key-based: Assertion-Reason on gymnosperm pollen as keyed.
Question 152
Given below are two statements: Statement I: Vas deferens receives a duct from seminal vesicle and opens into urethra as the ejaculatory duct. Statement Il: The cavity of the cervix is called cervical canal which along with vagina forms birth canal. In the light of the above statements, choose the correct answer from the options given below:
- A Both Statement I and Statement II are true.
- B Both Statement I and Statement II are false.
- C Statement I is correct but Statement II is false.
- D Statement I is incorrect but Statement II is true.
Answer: A. Both Statement I and Statement II are true.
Why: Key-based: statements on male reproductive ducts as keyed.
Question 166
Which one of the following techniques does not serve the purpose of early diagnosis of a disease for its early treatment?
- A Recombinant DNA Technology
- B Serum and Urine analysis
- C Polymerase Chain Reaction (PCR) technique
- D Enzyme Linked Immuno-Sorbent Assay (ELISA) technique
Answer: B. Serum and Urine analysis
Why: Recombinant DNA technology is not a diagnostic technique for early disease.
Try the rest of NEET 2023
Open in the appFrequently asked questions
How many questions were there in the NEET 2023 paper?
The NEET 2023 paper (Set E1) in our collection has 199 questions: 100 in Biology, 49 in Physics and 50 in Chemistry. The paper has 200 questions in two sections for each subject. Section A is compulsory, and in Section B students answer any 10 of 15, so 180 questions count.
What is the marking scheme of NEET 2023?
Each correct answer earns 4 marks and each wrong answer loses 1 mark. An unanswered question scores nothing.
Which chapters had the most questions in NEET 2023?
The chapters that carried the most questions were Principles of Inheritance and Variation (9), Human Health and Diseases (9), Cell Cycle and Cell Division (6).
Can I attempt the NEET 2023 paper online?
Yes. Open the NEET 2023 paper in the NeetVictory app, sit it under the real timing and marking, and see where you rank among students who have sat the same paper. Previous year papers are part of NeetVictory Pro.