The NEET 2017 paper had 180 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.
| Exam | NEET 2017, Set C |
|---|---|
| Questions | 180 (90 Biology, 45 Physics, 45 Chemistry) |
| Duration | 3 hours |
| Marking | +4 for a correct answer, −1 for a wrong answer |
| How many to answer | All 180 questions are compulsory. |
All questions, solutions and the All-India rank for this paper are in the app.
Questions are counted by the chapter they test. The chapters that carried the most were Molecular Basis of Inheritance (7), Sexual Reproduction in Flowering Plants (6), p-Block Elements (6). Use the counts to see where this paper put its weight, and click a chapter for practice questions.
A spread of 10 questions from the paper, chosen across the three subjects. The full paper is in the app.
Viroids differ from viruses in having :
Answer: A. RNA molecules without protein coat
Why: Viroids are infectious low-molecular-weight RNA with no capsid or protein coat, unlike viruses which have a protein coat around their genome.
A decrease in blood pressure/volume will not cause the release of
Answer: C. Atrial Natriuretic Factor
Why: Low blood pressure/volume triggers ADH, renin and (through angiotensin) aldosterone release to retain water and salt; ANF is released when pressure rises and causes vasodilation, so it is not released.
Asymptote in a logistic growth curve is obtained when
Answer: C. K = N
Why: In logistic growth dN/dt = rN(K-N)/K becomes zero when N reaches the carrying capacity K, so the curve flattens at an asymptote when K = N.
Which ecosystem has the maximum biomass?
Answer: B. Forest ecosystem
Why: Forests, with large long-lived trees, hold the greatest standing crop of biomass among these ecosystems.
Flowers which have single ovule in the ovary and are packed into inflorescence are usually pollinated by
Answer: D. Wind
Why: Wind-pollinated plants such as maize and wheat have flowers with a single ovule, grouped in dense inflorescences (cobs, spikes), to catch airborne pollen efficiently.
A gas mixture consists of 2 moles of O₂ and 4 moles of Ar at temperature T. Neglecting all vibrational modes, the total internal energy of the system is
Answer: A. 11 RT
Why: Without vibration, diatomic O₂ has 5 degrees of freedom (5/2 RT per mole) and monatomic Ar has 3 (3/2 RT per mole). U = 2×(5/2)RT + 4×(3/2)RT = 5RT + 6RT = 11RT.
Young’s double slit experiment is first performed in air and then in a medium other than air. It is found that 8th bright fringe in the medium lies where 5th dark fringe lies in air. The refractive index of the medium is nearly
Answer: A. 1.78
Why: Fringe positions scale as λD/d, and λ in the medium is λ/n. The 8th bright fringe in the medium is at 8λD/(nd) and the 5th dark fringe in air is at 4.5λD/d, so n = 8/4.5 ≈ 1.78.
Which of the following pairs of compounds is isoelectronic and isostructural?
Answer: D. IBr₂⁻, XeF₂
Why: IBr₂⁻ and XeF₂ both have 22 valence electrons, with 2 bond pairs and 3 lone pairs on the central atom, so both are linear (sp³d). The other pairs differ in electron count or shape.
Correct increasing order for the wavelengths of absorption in the visible region for the complexes of Co³⁺ is
Answer: B. [Co(en)₃]³⁺, [Co(NH₃)₆]³⁺, [Co(H₂O)₆]³⁺
Why: The ligand field strength order is en > NH₃ > H₂O, so the splitting is largest for en and the absorbed energy is highest. Since wavelength is inversely proportional to energy, the wavelength increases en < NH₃ < H₂O.
Mixture of chloroxylenol and terpineol acts as
Answer: C. Antiseptic
Why: Chloroxylenol with terpineol is the formulation sold as Dettol, which is used as an antiseptic applied to living tissue to kill or stop growth of microbes.
The NEET 2017 paper (Set C) in our collection has 180 questions: 90 in Biology, 45 in Physics and 45 in Chemistry. All 180 questions are compulsory.
Each correct answer earns 4 marks and each wrong answer loses 1 mark. An unanswered question scores nothing.
The chapters that carried the most questions were Molecular Basis of Inheritance (7), Sexual Reproduction in Flowering Plants (6), p-Block Elements (6).
Yes. Open the NEET 2017 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.
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