Create me a study plan and guide to crack gst addm...

Yes — you can build a solid 20-day crash plan for the GST admission exam, Unit A (Science), Bangladesh.

For the current 2025–26 GST cycle, the official portal shows Unit A (Science) is scheduled for April 10, 2026, from 11:00 AM to 12:00 PM. The official site also shows Unit A eligibility for science students as minimum GPA 3.25 in both SSC and HSC, with combined GPA at least 7.00. (gstadmission.ac.bd)

Summaries of the current prospectus indicate the test is 100-mark MCQ, 1 hour, with 0.25 deducted for each wrong answer, and Unit A is built around Physics, Chemistry, Mathematics, Biology, Bangla, and English in a 4-subject format. Those same summaries say Physics and Chemistry are compulsory, and you must take at least one of Math or Biology; the remaining slot can be completed with the other of Math/Biology or Bangla/English. (bdstudyupdate.com)

That means your smartest 20-day plan is not to study everything equally. Your goal is to lock your best 4-subject combination and maximize score under time pressure.

Best scoring approach

Pick one of these paths first:

Path 1: Physics + Chemistry + Math + Biology
Best if you are already decent in both Math and Bio.

Path 2: Physics + Chemistry + Math + English/Bangla
Best if Math is strong but Bio is weak.

Path 3: Physics + Chemistry + Biology + English/Bangla
Best if Bio is strong but Math is weak.

For most students trying to improve fast in 20 days, Path 2 or Path 3 is usually more realistic than trying to master both Math and Biology from scratch.

Daily routine for all 20 days

Use this every day:

Morning (3 hours)
Main concept study for Subject 1

Midday (3 hours)
Main concept study for Subject 2

Evening (2 hours)
MCQ practice from 2 weaker subjects

Night (1 to 1.5 hours)
Formula/vocab/error review

Your study should be roughly:

• Physics: 30%
• Chemistry: 30%
• Third subject (Math or Biology): 25%
• Fourth subject (English/Bangla): 15%

20-day study plan

Days 1–5: Build the base fast

Day 1
Set your subject combination. Gather books, question bank, notes, and one mock source. Start Physics: formulas, units, vectors, motion/basic mechanics. Chemistry: atomic structure, periodic trends, bonding.

Day 2
Physics: work-energy-power, gravitation/basic problems. Chemistry: mole concept, stoichiometry, gas laws. Solve 50 MCQs at night.

Day 3
Physics: heat, thermodynamics, basic kinetic ideas. Chemistry: solution, concentration, equilibrium basics. Review all wrong MCQs.

Day 4
Third subject day.
If Math: algebra, logarithm, function, equation solving.
If Biology: cell, biomolecules, cell division, tissues.
Night: 25 MCQs Physics + 25 MCQs Chemistry.

Day 5
Fourth subject day.
If English: vocabulary, synonyms-antonyms, grammar error spotting, tense/voice/narration basics, comprehension speed.
If Bangla: ব্যাকরণ basics, সমাস, সন্ধি, কারক, বাক্যরূপ, শব্দশুদ্ধি, সাহিত্যিক basics.
Night: 1 mini mock of 40–50 questions.

Days 6–10: Cover the highest-yield chapters

Day 6
Physics: electricity/current/circuits. Chemistry: acid-base, pH, redox. Timed MCQ practice.

Day 7
Physics: magnetism + modern physics basics. Chemistry: organic chemistry fundamentals, naming, common reactions.

Day 8
Third subject deep work.
Math: trigonometry + differentiation/integration basics.
Biology: genetics, DNA/RNA, inheritance.

Day 9
Physics revision test + Chemistry revision test.
Do two timed sets of 25 questions each.

Day 10
Fourth subject revision.
English: grammar + passage + vocabulary drill.
Bangla: grammar + সাহিত্য + confused forms.
Night: Full 100-mark mixed practice set.

Days 11–15: Turn preparation into exam performance

Day 11
Take your first full 1-hour mock. Analyze every wrong answer. Make an “error notebook.”

Day 12
Physics weak areas only. No full chapter reading. Just formula sheet + tricky MCQs + repeated mistakes.

Day 13
Chemistry weak areas only. Focus on reactions, exceptions, and confusing concepts.

Day 14
Third subject weak areas only.
Math: short tricks, common patterns, graph-based questions.
Biology: one-line facts, diagrams, genetics traps.

Day 15
Fourth subject speed day.
English/Bangla should become your scoring cushion. Aim for fast, accurate answers here.

Days 16–18: Mock phase

Day 16
Full mock 2 in real exam conditions.
Target: accuracy first. Because of negative marking, random guessing hurts. (bdstudyupdate.com)

Day 17
Fix weak chapters from Mock 2. Revise formula sheet, reaction sheet, grammar sheet.

Day 18
Full mock 3.
After the mock, make final short notes:

• Physics formulas
• Chemistry reactions/exceptions
• Math shortcuts or Biology one-liners
• English/Bangla grammar traps

Days 19–20: Final revision sprint

Day 19
No new chapters.
Revise only:

• formula list
• reactions list
• top 100 MCQ mistakes
• grammar/vocab list

Day 20
Take one light mock or 50-question practice.
Then stop heavy study. Sleep well. Keep admit card, pen, and transport plan ready.

What to study in each subject

Physics

Focus on:

• formulas
• unit conversion
• graph-based questions
• electricity
• modern physics
• heat/thermodynamics
• mechanics basics

Physics improves fast when you do problem patterns repeatedly, not when you reread theory.

Chemistry

Focus on:

• mole concept
• equilibrium
• acid-base/redox
• organic reaction basics
• periodic trends
• common exceptions

Chemistry gives marks when you memorize reaction patterns and exceptions.

Math

Focus on:

• algebra
• functions
• logarithm
• trigonometry
• calculus basics
• coordinate geometry basics

For GST, speed matters more than elegant long solutions.

Biology

Focus on:

• cell and biomolecules
• genetics
• human physiology basics
• plant physiology basics
• diagrams and factual comparisons

Biology rewards short, sharp revision.

English

Focus on:

• grammar
• vocabulary
• sentence correction
• comprehension speed
• common confusing words

Bangla

Focus on:

• ব্যাকরণ
• শুদ্ধি
• সমাস, সন্ধি, কারক
• সাহিত্যিক তথ্য
• one-line revision notes

Rules that will improve your score fast

1. Don’t guess blindly.
With negative marking, accuracy beats wild attempts. (bdstudyupdate.com)

2. Make an error notebook.
Every mock should reduce repeated mistakes.

3. Practice in 1-hour format.
The exam is fast, so timed practice is essential. (bdstudyupdate.com)

4. Revise short notes every night.
Memory is built by daily return, not one-time reading.

5. Pick scoring subjects, not ego subjects.
In 20 days, smart selection matters more than trying to conquer all 6 subjects.

A realistic target

If your HSC basics are already average, 20 focused days can make you competitive.
If your basics are very weak, use these 20 days to become exam-smart:

• strong Physics basics
• strong Chemistry basics
• one strong third subject
• one fast scoring language subject
• 3–4 full mocks

That is enough to move from “unprepared” to “serious contender.”

Final recommendation

Use this exact combination unless you already know you’re better elsewhere:

Physics + Chemistry + your stronger one between Math/Biology + your stronger one between Bangla/English

That gives the best balance of score potential + 20-day feasibility.

I can also turn this into a day-by-day checklist routine from morning to night in a cleaner format.