NEET UG · Biology · Biological Classification
Viruses, Viroids, Prions and Lichens: NEET previous year questions
4 questions in ten years of NEET, in 4 of 10 papers. Pattern: Most years. Here is how it is asked and which ideas come back.
- Asked in 10 years
- 4
- about 0.4 per paper
- Years asked
- 4/10
- last asked 2026
- Weighted estimate
- 0.4
- model; history: 0.4 a paper on average, typically 0–1
Key findings
- 01
Asked in 4 of 10 papers, 4 questions in all: #169 of 204 topics by ten-year total. It comes back every 3.0 years on average.
- 02
33% of its questions since 2018 tested an idea never asked before; 1 repeated an idea from the year before.
- 03
The most repeated idea is Viroids, asked 3 times (2017, 2019, 2020), usually as “true statement selection on viroids”.
- 04
NEET has asked 0 of the 6 ideas in this topic; 0 have never been asked, directly or indirectly.
- 05
Mostly asked as one-line MCQ (100%); 75% easy, 0% hard.
Questions per year
- Up to 2023
- 0.4
- per paper
- Since 2024
- 0.3
- -0.1
- Usual gap
- 3.0 yrs
- between papers asking it
- Swing
- ±0.5
- questions, year to year
How it is asked
Difficulty, format and skill
Across all 4 questions on Viruses, Viroids, Prions and Lichens since 2017.
Difficulty
QUESTIONS- Easy3 · 75%
- Medium1 · 25%
- Hard0 · 0%
Format
SHARE- One-line MCQ · 4 Q100%
Skill tested
SHARE- Recall · 4 Q100%
Repeats
New idea, or one asked before?
Each column is a paper. Blue questions tested an idea NEET had not asked before; navy ones went back to an idea from an earlier paper. 2017 is the first paper, so everything in it counts as new.
- Idea asked for the first time
- Idea asked in an earlier paper
Coverage of the topic
NEET has asked 0 of the 6 ideas in this topic. 0 have never been asked yet.
- Asked directly0 · 0%
- Touched inside another question6 · 100%
- Never asked0 · 0%
Ideas come from Lumi’s syllabus map of NCERT. A never-asked idea is not a safe skip: most new questions come from exactly these.
Drill down
Idea, year, question
Every idea NEET tested in this topic, with its ten papers. Open one to read the questions.
- Repeated3 · 75%
- 2020 · Q57Which of the following is correct about viroids ?
easyOne-line MCQAsked the year before
- 2019 · Q156Which of the following statements is incorrect ?
mediumOne-line MCQ
- 2017 · Q117Viroids differ from viruses in having :
easyOne-line MCQNew idea
- 2020 · Q57
- 1 · 25%
Squares are the ten papers, 2017 to 2026; darker means more questions. Share is of the level above.
Ideas
Every idea inside this topic
2 different ideas were tested; 1 came more than once.
- Viroids3×
true statement selection on viroids
One-line MCQ · 6% next - Prions1×
identify causative agent of disease
One-line MCQ · 6% next
Chance next is the historical rate at which an idea with this record came back in the following paper. It is low for every idea, which is why learning the topic beats memorising past questions. All repeated ideas
Every question
Viruses, Viroids, Prions and Lichens questions, year by year
The opening words of each question as it appeared in the official paper, with the idea it tested.
NEET 20261 question
- Q101Mad cow disease is caused by _________.
Idea: Prions
New ideaEasyOne-line MCQ
NEET 20201 question
- Q57Which of the following is correct about viroids ?
Idea: Viroids
Asked last yearEasyOne-line MCQ
NEET 20191 question
- Q156Which of the following statements is incorrect ?
Idea: Viroids
MediumOne-line MCQ
NEET 20171 question
- Q117Viroids differ from viruses in having :
Idea: Viroids
EasyOne-line MCQ
Questions from the official NEET UG papers published by NTA (CBSE before 2019). Topic and idea tags, counts and notes are Lumi’s.