How CBSE Half-Yearly Exams Help in Board Exam Preparation? Key Benefits for Class 10 and 12 Students https://www.selfstudys.com/update/how-cbse-half-yearly-exams-help-in-board-preparation

Channel
CLASS 12 CBSE
@Class_12_CBSE_Study_Material
On this record: Growth · Engagement · What this channel posts · Reactions · Posts · Polls · Citations · Telegram's recommendations · Cite this entry
44,208subscribers
-958 since we began measuring on 7 August 2026
Risers and fallers across the register · movement among entries of 31,623–100,000.
Register entry
| Telegram ID | -1001689455735 |
|---|---|
| Type | Channel |
| Username | @Class_12_CBSE_Study_Material |
| Description | CLASS 12 CBSE (12th) All Study Materials Here ◆Syllabus ◆NCERT Books & Solutions ◆Previous Year Papers ◆Model Papers ◆Revision Notes ◆Results |
| Created | Between 1 December 2021 and 30 April 2023 — estimated from Telegram’s id allocation, not measured. How this range is calculated. |
| First recorded | 7 August 2026 |
| Last confirmed live | 5 September 2026 |
| Measurements held | 27 |
| Confirmed unchanged | 1 time, most recently 5 September 2026 |
| On Telegram | t.me/Class_12_CBSE_Study_Material |
Growth
| Measured (UTC) | Subscribers | Change |
|---|---|---|
| 5 Sept 2026, 19:56 | 44,208 | -85 |
| 3 Sept 2026, 17:14 | 44,293 | -40 |
| 2 Sept 2026, 08:34 | 44,333 | -20 |
| 1 Sept 2026, 10:05 | 44,353 | -57 |
| 31 Aug 2026, 07:38 | 44,410 | -28 |
| 30 Aug 2026, 04:08 | 44,438 | -40 |
| 29 Aug 2026, 07:04 | 44,478 | -20 |
| 28 Aug 2026, 04:04 | 44,498 | -12 |
| 27 Aug 2026, 03:03 | 44,510 | -28 |
| 26 Aug 2026, 04:14 | 44,538 | -42 |
| 25 Aug 2026, 05:33 | 44,580 | -44 |
| 24 Aug 2026, 06:11 | 44,624 | -21 |
| 22 Aug 2026, 14:43 | 44,645 | -61 |
| 21 Aug 2026, 08:44 | 44,706 | -62 |
| 20 Aug 2026, 06:22 | 44,768 | -32 |
| 19 Aug 2026, 05:38 | 44,800 | -4 |
| 18 Aug 2026, 08:57 | 44,804 | -31 |
| 17 Aug 2026, 10:48 | 44,835 | -60 |
| 15 Aug 2026, 20:45 | 44,895 | -50 |
| 14 Aug 2026, 07:25 | 44,945 | first reading |
Engagement
55 posts held, back to 17 July 2026 — the reader has not yet reached the start of this channel’s public history, so older posts may sit further back, unread. Read across 64 pages of Telegram’s post history, 20 posts per page.
- ERR · 30 days
- 6.88%
- avg views ÷ 44,208 subscribers
- Avg views / post
- 3,040
- 34 posts measured
- Reaction rate
- 0.146%
- reactions ÷ views · ER floor
- Posts in window
- 35
- of 55 held
ERR is average views per post over the last 30 days divided by subscribers, the definition TGStat uses, so this figure is comparable with the one you will see elsewhere. It falls structurally as a channel grows: a high ERR on a small channel and a low one on a large channel describe reach mathematics, not quality. We publish the figure and the sample it came from and pass no verdict on it.
ER is defined industry-wide as (forwards + reactions + comments) ÷ views — note the denominator is views, not subscribers. Telegram’s public web preview carries views and reactions but not forward or comment counts, so the reaction rate above is the reactions term only and is therefore a floor: the true ER for this channel is higher by an amount we have not measured and will not estimate. It is computed over the 25 of 34 measured posts that carry a reaction reading, and over those same posts' views.
| Window | Rolling 30 days · latest post in window 5 September 2026 |
|---|---|
| Posts held | 55 (17 July 2026 – 5 September 2026) |
| Views total | 103,387 |
| Reactions total | 120 |
| Forwards / comments | not exposed by the public surface — not measured, not estimated |
| Readings taken | 6 Sept 2026, 10:29 UTC |
Views are a single reading per post, taken at the time above. A post published in the last day or two is still accumulating views, which pulls the 30-day average down slightly. That is a property of the standard definition rather than a fault in it, so we keep the definition rather than “correcting” the number into something nobody can reproduce.
Precision. Telegram publishes view counts on its public widget in short form — 8.12K, 3.7M — so any reading at or above 1,000 reaches us rounded to three significant figures, and only counts below 1,000 are exact. Averages and rates derived from them are shown to the same precision rather than to the unit: a figure like 3,701,250 would assert digits nobody measured.
Reaction counts are published per emoji and rounded the same way, so a total below 1,000 is exact and a larger one is a sum that may carry a rounded component from each emoji above 1,000. Because it is a sum, it does not look rounded — read a large reaction total as three significant figures per contributing emoji rather than as the figure it prints.
What this channel posts
- Photos
- ≈1,590
- Videos
- ≈5
- Links
- ≈1,690
Lifetime counters from Telegram’s own channel header, read 6 September 2026 — not the date at the top of this page, which is when the subscriber count was last read. A count marked ≈ was rounded by Telegram before we ever saw it — t.me prints these counters in full below 1,000 and to three significant figures above, so ≈142,000 means somewhere between 141,500 and 142,499.
Reaction mix
226 reactions across 42 posts, in 6 distinct kinds. The most used accounts for 90.7% of them.
| Reaction | Count | Share | Share, drawn |
|---|---|---|---|
| ❤ | 205 | 90.7% | |
| 👍 | 12 | 5.31% | |
| 🔥 | 4 | 1.77% | |
| 👎 | 2 | 0.885% | |
| 😁 | 2 | 0.885% | |
| 👌 | 1 | 0.442% |
No sentiment is inferred, and none should be read in. This table is ordered by count and by nothing else. Emoji do not carry stable meaning across languages or communities — 🙏 is thanks in one channel and mourning in another — so we publish which ones were pressed and how often, and pass no judgement on what an audience meant by them.
Precision. Telegram publishes reaction counts per emoji and short-forms each one — 4.34K, 1.2M — so any single kind at or above 1,000 reaches us at three significant figures, and only counts below 1,000 are exact. The shares above are ratios of those figures and carry the same error. This is also why the total here can differ slightly from a reaction total printed elsewhere on the page: both are sums of the same rounded parts, taken over samples with different edges.
Coverage. Reactions were read on 44 of the 55 sampled posts in this sample. Summed by Telegram’s own count on each post — not by adding up the per-emoji breakdown above — those same posts carry 226 reactions in total: the kind of figure the paragraph above means by “a reaction total printed elsewhere on the page”.
Measured over the 55 most recent posts we hold, published 17 July 2026 to 5 September 2026, using the newest reading held for each. Telegram Stars are excluded: they are a payment, not a reaction, and they have their own section.
Recent posts
🌸 Happy Teachers' Day! 🌸 Teachers are the true superheroes who inspire, guide, and shape our future with knowledge, kindness, and care. ❤️ Let's take a moment to thank the mentors who made a difference in our lives. 🙏🎓✨
❤9
CBSE Class 12 Half Yearly Syllabus 2026-27 PDF: Download All Subjects Syllabus Free https://www.selfstudys.com/update/cbse-class-12-half-yearly-syllabus-2026-27-pdf-download-all-subjects-syllabus-free
❤1
UPSC NDA II Admit Card 2026 Released: Download Hall Ticket Direct Link Here https://www.selfstudys.com/update/upsc-nda-ii-admit-card-2026-released-download-hall-ticket-direct-link-here
CBSE 3-Language Policy: Centre Preparing Implementation Plan, SC Gets Update https://www.selfstudys.com/update/cbse-3-language-policy-centre-preparing-implementation-plan-sc-gets-update
Q2.Amplification of gene of interest by using DNA polymerase may go upto
- (A) 0.1 million times17%
- (B) 1 million times39%
- (C) 1 billion times39%
- (D) 1 trillion times6%
Shares as published, totalling 101%. No per-option vote count is published by Telegram, so none is shown.
❤4
Q1.A man whose father was colour-blind marries a woman who had a colour-blind mother and normal father. What percentage of male children of this couple will be colour-blind?(2025 PYQ)
- (A) 25%27%
- (B) 0%11%
- (C) 50%48%
- (D) 75%14%
Shares as published. No per-option vote count is published by Telegram, so none is shown.
❤3
CBSE Schools Attendance Update: Himachal Government Announces New Three-Time System https://www.selfstudys.com/update/cbse-schools-attendance-update-himachal-government-announces-new-three-time-system
Revised NCERT Books for Classes 10 and 12 Being Prepared, Education Minister Confirms https://www.selfstudys.com/update/revised-ncert-books-for-classes-10and-12-being-prepared-education-minister-confirms
❤1
Class 12 | Chemistry, CH-2, Electrochemistry, Revision Short Notes 📚🔥 Give 100+❤️ React for More Important Study Materials!
❤7👍3👎2
Difference Between Thermoplastic and Thermosetting Plastic for CBSE 12th Board Exam https://www.selfstudys.com/update/difference-between-thermoplastic-and-thermosetting-plastic-for-cbse-12th-board-exam
❤1
CBSE Class 12 Revaluation 2026: Answer Sheet Photocopy Link Activated, Apply Now https://www.selfstudys.com/update/cbse-class-12-revaluation-2026-answer-sheet-photocopy-link-activated-apply-now
Showing the 12 most recent of 55 posts we hold for @Class_12_CBSE_Study_Material. View and reaction counts are the latest single reading for each post, not a live figure, and a recent post is still accumulating both. A view count marked ≈ was rounded by Telegram before we ever saw it — t.me prints views in full below 1,000 and to three significant figures above, so ≈1,200,000 means somewhere between 1,150,000 and 1,249,999. Unmarked counts are exact. Text is reproduced from the public post preview and truncated for length.
Polls
The 2 polls we hold for this entry, as Telegram rendered them when we read the post. A poll’s figures keep moving after that, so each one is dated.
Q2.Amplification of gene of interest by using DNA polymerase may go upto
- (A) 0.1 million times17%
- (B) 1 million times39%
- (C) 1 billion times39%
- (D) 1 trillion times6%
Shares as published, totalling 101%. No per-option vote count is published by Telegram, so none is shown.
Q1.A man whose father was colour-blind marries a woman who had a colour-blind mother and normal father. What percentage of male children of this couple will be colour-blind?(2025 PYQ)
- (A) 25%27%
- (B) 0%11%
- (C) 50%48%
- (D) 75%14%
Shares as published. No per-option vote count is published by Telegram, so none is shown.
Percentages only — there are no per-option vote counts here, because Telegram publishes none. The public post preview gives each option’s share and a single voter total, and nothing else. Multiplying one by the other would produce a per-option tally that looks measured and is not: the shares are rounded to whole numbers before we ever see them. We print what was published and leave the column that does not exist empty.
The shares need not add up to 100. Rounding alone puts many polls at 99 or 101. A poll that allows more than one answer per voter runs well past 100 by design, and several here do. The bars are drawn against a fixed 100% track at each option’s own percentage rather than normalised to the total, so a poll that exceeds it shows that it does instead of being quietly rescaled.
Read from the 55 most recent posts we hold, published 17 July 2026 to 5 September 2026. Telegram labels each poll by kind — an anonymous poll, a quiz, a closed set of final results — and that label is reproduced rather than paraphrased.
Forward network
Republishes
Channels on the register whose posts this channel has forwarded.
Built only from forwarded posts we have actually read, on both sides. Coverage is early and deliberately incomplete: a missing link means we have not read the post that would prove it, never that the relationship does not exist. Counts are distinct forwarded posts observed, so they only ever go up as we read more.
Channels Telegram recommends alongside this one
Telegram’s own answer, not this register’s. When this register asks Telegram’s API what is similar to this channel, this is the list it returns, in the exact order Telegram returns it — never re-sorted by subscribers or by anything else this register measures. The relationship, and the order, are Telegram’s; we record them and date them, and make no claim of our own about which of these channels actually resemble this one.
@class_12_physical_education · 1,362#1
@Class12thCBSE_Boards · 45,657#2
@selfstudys_ncert_solutions · 134,685#3
@officiapyqsclass12thPCB · 5,757#4
@jee_cbse · 7,158#5
@Chemistry_Short_Notes_JEE_NEET · 13,872#6
@Bharat_Panchal_Sir · 146,686#7
@class_12th_pyq · 8,000#8
@iit_jee_neet_notes_pdf · 2,258 (as read 28 August 2026)#9
@class_12_physicaleducation_notes · 3,293#10
@maths_cuet · 987 (as read 28 August 2026)#11
@Physics_Short_Notes_JEE_NEET · 7,873#12
@cbsegroup · 2,571 (as read 28 August 2026)#13
@Prayas_JEE_2_2027_PW · 5,550#14
@swatichawla12cs · 7,791#15
@WBJEE_WALLAH · 1,282 (as read 28 August 2026)#16
@AbhisheksahusirPhysics · 172,592#17
@examupdatesbharat · 1,205#18
@EduBack · 6,238#19
@JEE_Full_Study_Material · 43,387#20
@Ektasoni18 · 40,138#21
@Sunil_Jangra_Sir · 30,930#22
@cbsejeeneet7 · 1,963#23
@physicsheadquarters · 8,850#24
@vedantumath1 · 116,237#25
@allcbsenewsindia · 8,209#26
@vidyawisemathsbyrohitsolanki · 13,188#27
@CBSE_Class_11_12th_Science_Notes · 38,977#28
@iitjeeneetnotess · 62,336#29
@UH_CUET · 1,192#30
@Aa_Mam_Lecture_Etoos · 1,945#31
@CUETbyNTA_2024 · 4,992#32
@GS_STUDY_GROWTH · 7,118#33
@ELA_IIT_JEE_HUB · 975 (as read 28 August 2026)#34
@Official_Dear_Sir_Class_10_11_12 · 3,942#35
@drp001 · 505#36
@Bharat_Panchal_chemistry · 4,367#37
@mathspari · 1,837#38
@pythonsumitarorabooks · 6,541#39
@Biology_Quize_Ncert_Based · 2,585#40
@PreboardPaper · 2,061 (as read 28 August 2026)#41
@Business_Studies_BST_CUET_Notes · 2,366 (as read 28 August 2026)#42
@JEE_NEET_Physics_Notes · 3,883#43
@arvindacademyyoutube · 33,510#44
@VJEEOfficial · 23,394#45
@poke_uniteNews · 480#46
@TheDiaryOfHerDreams · 1,855#47
@kattar_gamer2 · 1,630#48
@MISSION_IIT_JEE_NEET · 718#49
@HPTETCommission · 2,482 (as read 28 August 2026)#50
@jobmantra12 · 23,287#51
@upsssc_info · 6,427#52
@ekam_english · 1,316#53
@gsbyvishnusir · 32,087#54
@stakeminesV2mamal · 10,757#55
@UNIVERSALCINEPHILES · 576 (as read 28 August 2026)#56
@NEET_POLL_QUIZ_BIOLOGY · 2,221#57
Read from Telegram’s recommendation API, most recently 28 August 2026. Telegram holds a list like this for a small and growing share of the register — how this is measured, and why most channel pages show nothing here.
Appears in Telegram’s recommendations for other channels
The reverse of the list above, and a different kind of signal. This does not require this channel to have ever been asked about directly — each row below is a channel we DID ask Telegram about, whose Telegram-generated list happened to include this one. A channel can appear here with an empty list above it, because being named by someone else’s query is independent of having been queried itself.
@selfstudys_ncert_solutions · 134,685
Telegram ranks this channel #2 of 73 here — alongside 72 others — read 13 August 2026
@rajataroraclasses · 43,254
Telegram ranks this channel #6 of 27 here — alongside 26 others — read 28 August 2026
@Class12thCBSE_Boards · 45,657
Telegram ranks this channel #17 of 59 here — alongside 58 others — read 27 August 2026
@JEE_Full_Study_Material · 43,387
Telegram ranks this channel #20 of 63 here — alongside 62 others — read 28 August 2026
@Ektasoni18 · 40,138
Telegram ranks this channel #27 of 56 here — alongside 55 others — read 30 August 2026
@Bharat_Panchal_Sir · 146,686
Telegram ranks this channel #32 of 74 here — alongside 73 others — read 12 August 2026
@Class_10th_11_12th_Science_Notes · 70,409
Telegram ranks this channel #34 of 59 here — alongside 58 others — read 20 August 2026
@Notes_Class_11th_12th_Science · 50,791
Telegram ranks this channel #38 of 56 here — alongside 55 others — read 25 August 2026
@arvindacademyyoutube · 33,510
Telegram ranks this channel #41 of 45 here — alongside 44 others — read 4 September 2026
@AbhisheksahusirPhysics · 172,592
Telegram ranks this channel #45 of 70 here — alongside 69 others — read 12 August 2026
This channel appears in 10 seed channels' Telegram-generated recommendation lists in total. Each is Telegram’s list for THAT channel, not this one — see how this is measured.
Cite this entry
A live page changes as we take new readings, so a citation should name the measurement it is based on, not just the URL. The line below cites the subscriber count as measured 5 September 2026 — this entry's latest reading, not the date you are reading this.
“CLASS 12 CBSE” (@Class_12_CBSE_Study_Material), 44,208 subscribers as measured 5 September 2026. Telegram Register, tgregister.com/channel/Class_12_CBSE_Study_Material.
Full measurement history, CC BY 4.0. Every reading this register holds for this entry, not just the latest one, as a dated, downloadable record: CSV · JSON. Free to use with attribution to tgregister.com. Each file carries its own generation timestamp, which is the figure to cite for exactly when the data was retrieved.