১৮৫৬ সালে এনফিল্ড নামক এক প্রকার রাইফেল ব্যবহার শুরু হয়। এই বন্দুকের কার্তুজ দাঁত দিয়ে কেটে ব্যবহার করতে হতো। গুজব রটে যে, এই বলুকের কার্বুজ গরু ও শুয়োরের চর্বি নিয়ে তৈরী। হিন্দু-মুসলমান সৈনিকদের মনে ধারণা জন্মে যে, তাদের ধর্ম বিনষ্ট করার জন্য এই ব্যবস্থা করেছে। ১৮৫৭ সালের ২৯ মার্চ ব্যারাকপুরের দমদমে সিপাহি মঙ্গলপান্ডে কার্তুজ ব্যবহারে অস্বীকৃতি জানান এবং তার ঊর্ধ্বতন কর্মকর্তাকে আক্রমণ করেন।
জেনে নিই
Read more
আমাদের অল-ইন-ওয়ান মোবাইল অ্যাপের মাধ্যমে সীমাহীন শেখার সুযোগ উপভোগ করুন।
Lorem ipsum dolor, sit amet consectetur adipisicing elit. Ducimus nihil, quo, quis minus aspernatur expedita, incidunt facilis aliquid inventore voluptate dolores accusantium laborum labore a dolorum dolore omnis qui? Consequuntur sed facilis repellendus corrupti amet in quibusdam ducimus illo autem, a praesentium.
1 hour ago
Lorem ipsum dolor, sit amet consectetur adipisicing elit. Ducimus nihil, quo, quis minus aspernatur expedita, incidunt facilis aliquid inventore voluptate dolores accusantium laborum labore a dolorum dolore omnis qui? Consequuntur sed facilis repellendus corrupti amet in quibusdam ducimus illo autem, a praesentium.
1 hour ago
Lorem ipsum dolor, sit amet consectetur adipisicing elit. Ducimus nihil, quo, quis minus aspernatur expedita, incidunt facilis aliquid inventore voluptate dolores accusantium laborum labore a dolorum dolore omnis qui? Consequuntur sed facilis repellendus corrupti amet in quibusdam ducimus illo autem, a praesentium.
1 hour ago
Lorem ipsum dolor, sit amet consectetur adipisicing elit. Ducimus nihil, quo, quis minus aspernatur expedita, incidunt facilis aliquid inventore voluptate dolores accusantium laborum labore a dolorum dolore omnis qui? Consequuntur sed facilis repellendus corrupti amet in quibusdam ducimus illo autem, a praesentium.
1 hour ago
Lorem ipsum dolor, sit amet consectetur adipisicing elit. Ducimus nihil, quo, quis minus aspernatur expedita, incidunt facilis aliquid inventore voluptate dolores accusantium laborum labore a dolorum dolore omnis qui? Consequuntur sed facilis repellendus corrupti amet in quibusdam ducimus illo autem, a praesentium.
1 hour ago
Lorem ipsum dolor, sit amet consectetur adipisicing elit. Ducimus nihil, quo, quis minus aspernatur expedita, incidunt facilis aliquid inventore voluptate dolores accusantium laborum labore a dolorum dolore omnis qui? Consequuntur sed facilis repellendus corrupti amet in quibusdam ducimus illo autem, a praesentium.
1 hour ago
Lorem ipsum dolor, sit amet consectetur adipisicing elit. Ducimus nihil, quo, quis minus aspernatur expedita, incidunt facilis aliquid inventore voluptate dolores accusantium laborum labore a dolorum dolore omnis qui? Consequuntur sed facilis repellendus corrupti amet in quibusdam ducimus illo autem, a praesentium.
1 hour ago
Lorem ipsum dolor, sit amet consectetur adipisicing elit. Ducimus nihil, quo, quis minus aspernatur expedita, incidunt facilis aliquid inventore voluptate dolores accusantium laborum labore a dolorum dolore omnis qui? Consequuntur sed facilis repellendus corrupti amet in quibusdam ducimus illo autem, a praesentium.
1 hour ago
Lorem ipsum dolor, sit amet consectetur adipisicing elit. Ducimus nihil, quo, quis minus aspernatur expedita, incidunt facilis aliquid inventore voluptate dolores accusantium laborum labore a dolorum dolore omnis qui? Consequuntur sed facilis repellendus corrupti amet in quibusdam ducimus illo autem, a praesentium.
1 hour ago
Lorem ipsum dolor, sit amet consectetur adipisicing elit. Ducimus nihil, quo, quis minus aspernatur expedita, incidunt facilis aliquid inventore voluptate dolores accusantium laborum labore a dolorum dolore omnis qui? Consequuntur sed facilis repellendus corrupti amet in quibusdam ducimus illo autem, a praesentium.
1 hour ago
1 x Application (67.06%) | 138ms |
1 x Booting (32.94%) | 67.71ms |
update `subjects` set `view_count` = `view_count` + 1, `subjects`.`updated_at` = '2025-04-18 09:50:19' where `id` = 15782
Bindings |
|
Backtrace |
|
select `_lft`, `_rgt` from `subjects` where `id` = 15782 limit 1
Bindings |
|
Backtrace |
|
select `id`, `name`, `parent_id`, `_lft`, `_rgt`, `show_content`, `num_of_mcq`, `num_of_written`, `des_added_by`, `des_updated_by`, `author_name`, `link_subject_id`, `sub_category_id`, `main_category_id`, `slug`, `meta_og_title`, `meta_keyword`, `meta_description`, `vote`, `view_count`, `icon`, `page_type`, `chapter_name` from `subjects` where (`subjects`.`_lft` between 17151 and 17152) and `subjects`.`deleted_at` is null
Bindings |
|
Backtrace |
|
select `id`, `description`, `short_description`, `subject_id` from `subject_descriptions` where `subject_descriptions`.`subject_id` in (15782) and `subject_descriptions`.`deleted_at` is null
Backtrace |
|
select `id`, `name`, `slug` from `sub_categories` where `sub_categories`.`id` in (4878) and `sub_categories`.`deleted_at` is null
Backtrace |
|
select `id`, `user_id`, `completeable_type`, `completeable_id`, `complete_progress`, `is_complete` from `completes` where `completes`.`completeable_id` in (15782) and `completes`.`completeable_type` = 'App\\Models\\Subject'
Bindings |
|
Backtrace |
|
select `id`, `name`, `parent_id`, `_lft`, `_rgt`, `show_content`, `des_added_by`, `des_updated_by`, `author_name`, `link_subject_id` from `subjects` where `subjects`.`id` in (11190) and `subjects`.`deleted_at` is null
Backtrace |
|
select `id`, `description`, `short_description`, `subject_id` from `subject_descriptions` where `subject_descriptions`.`subject_id` in (11190) and `subject_descriptions`.`deleted_at` is null
Backtrace |
|
select `id`, `name`, `avatar` from `users` where `users`.`id` in (33722) and `users`.`deleted_at` is null
Backtrace |
|
select * from (select `questions`.`id`, `questions`.`subject_id`, `questions`.`category_id`, `questions`.`sub_category_id`, `questions`.`board_exam_id`, `questions`.`passage_id`, `questions`.`question_type`, `questions`.`question`, `questions`.`is_duplicate`, `questions`.`status`, `questions`.`image`, `subjectables`.`subject_id` as `pivot_subject_id`, `subjectables`.`subjectable_id` as `pivot_subjectable_id`, `subjectables`.`subjectable_type` as `pivot_subjectable_type`, row_number() over (partition by `subjectables`.`subject_id` order by `questions`.`created_at` desc) as `laravel_row` from `questions` inner join `subjectables` on `questions`.`id` = `subjectables`.`subjectable_id` where `subjectables`.`subject_id` in (15782) and `subjectables`.`subjectable_type` = 'App\\Models\\Question' and `questions`.`status` = 'active' and `questions`.`deleted_at` is null) as `laravel_table` where `laravel_row` <= 5 order by `laravel_row`
Bindings |
|
Backtrace |
|
select `id`, `question_id`, `option_1`, `option_2`, `option_3`, `option_4`, `option_5`, `image_option`, `image_question`, `answer` from `question_options` where `question_options`.`question_id` in (86300, 106389, 244299, 246795) and `question_options`.`deleted_at` is null
Backtrace |
|
select `id`, `name`, `slug` from `subjects` where `subjects`.`id` in (79) and `subjects`.`deleted_at` is null
Backtrace |
|
select `subjects`.`id`, `subjects`.`name`, `subjects`.`slug`, `subjectables`.`subjectable_id` as `pivot_subjectable_id`, `subjectables`.`subject_id` as `pivot_subject_id`, `subjectables`.`subjectable_type` as `pivot_subjectable_type`, `subjectables`.`created_user_id` as `pivot_created_user_id`, `subjectables`.`deleted_at` as `pivot_deleted_at`, `subjectables`.`status` as `pivot_status`, `subjectables`.`created_at` as `pivot_created_at`, `subjectables`.`updated_at` as `pivot_updated_at` from `subjects` inner join `subjectables` on `subjects`.`id` = `subjectables`.`subject_id` where `subjectables`.`subjectable_id` in (86300, 106389, 244299, 246795) and `subjectables`.`subjectable_type` = 'App\\Models\\Question' and `subjects`.`deleted_at` is null
Bindings |
|
Backtrace |
|
select `id`, `title`, `passage` from `passages` where `passages`.`id` in (0) and `passages`.`deleted_at` is null
Backtrace |
|
select * from `subjects` where `subjects`.`id` = 15782 and `subjects`.`deleted_at` is null limit 1
Bindings |
|
Backtrace |
|
select `id`, `name`, `slug`, `parent_id`, `_lft`, `_rgt` from `subjects` where (17152 between `subjects`.`_lft` and `subjects`.`_rgt` and `subjects`.`id` <> 15782) and `subjects`.`deleted_at` is null order by `_lft` asc
Bindings |
|
Backtrace |
|
select * from `subjects` where `subjects`.`id` = 15782 and `subjects`.`deleted_at` is null limit 1
Bindings |
|
Backtrace |
|
select `id`, `name`, `parent_id`, `_lft`, `_rgt`, `slug`, `meta_og_title`, `meta_keyword`, `meta_description` from `subjects` where `subjects`.`id` = 15777 and `subjects`.`deleted_at` is null limit 1
Bindings |
|
Backtrace |
|
select `id`, `description`, `subject_id` from `subject_descriptions` where `subject_descriptions`.`subject_id` in (15777) and `subject_descriptions`.`deleted_at` is null
Backtrace |
|
select `_lft`, `_rgt` from `subjects` where `id` = 79 limit 1
Bindings |
|
Backtrace |
|
select `id`, `name`, `parent_id`, `_lft`, `_rgt`, `name`, `slug`, `icon`, `banner` from `subjects` where (`subjects`.`_lft` between 16791 and 20416) and `subjects`.`deleted_at` is null
Bindings |
|
Backtrace |
|
select * from `mediables` where `mediable_type` = 'App\\Models\\Subject' and `mediable_id` in (15782)
Bindings |
|
Backtrace |
|
select `videos`.`video_src_url`, `mediables`.`mediable_id` as `chapter_id` from `videos` inner join `mediables` on `mediables`.`mediable_id` = `videos`.`id` where `videos`.`id` = 0 and `videos`.`video_src` = 'youtube' and `videos`.`deleted_at` is null
Bindings |
|
Backtrace |
|
select `id`, `name`, `main_category_id`, `slug` from `subjects` where `id` <> 15782 and `parent_id` = 15777 and `main_category_id` = 3 and `subjects`.`deleted_at` is null limit 5
Bindings |
|
Backtrace |
|
select * from `package_plans` where `status` = 'active' and `package_plans`.`deleted_at` is null
Bindings |
|
Backtrace |
|
200
[]
[]
0 of 0array:21 [▼ "x-https" => array:1 [▶ 0 => "1" ] "cookie" => array:1 [▶ 0 => "XSRF-TOKEN=eyJpdiI6IjRQMU0xZW0rYWdTaUVUS2NwZktTMkE9PSIsInZhbHVlIjoiWUZlck56dFIyQVJKOXZ3OHRUa0xrUS9mcExoYzNmZGdFb1pWUmNRZEJiem9laXZ5RmRzMFRKZFJmaGtkc1J0RitvWG9NZjJWa1lMbTNmZ2NURE5EYmZYQlRzdjRneDhXN0J5L1o1VnAxdXY1TDJ1K3VFTUMwQW50NVF2eGFqR0EiLCJtYWMiOiI2YjYzYzI3OTJkZTc3MjAzYmIxYmRiZTQxNTQ3MmQyZTk0M2FlOGFkMTAwMWVmZWE3MmEzZjQyNWQxYThkNGVmIiwidGFnIjoiIn0%3D; satt_academy_session=eyJpdiI6ImljVlh1STdZRzZGM3dSamFYbzJsYVE9PSIsInZhbHVlIjoiOXpVY0NLT2R0enpxMEE2aktNNkpDK1ROclhQT2lGT2RPb3pEQjNXNmVxRHRxZ21VRjU0TFpqTnpsZTBLYU5QMGRvWElsZUs0UW1VUk14VEkzREozNWVzOG1ydE9BU09OVTRpVnpHdWs2R3prbDhwaUgyaHBDN0pUeW1IYnd2T1oiLCJtYWMiOiIwNDhhNTczMjBlNmYzNDk1ZThhYmQxMzk2YTNkOWZmYTc0MmViNWIzOWJiYmFiNzU4NWZiNjExNjUyZGU1NWI0IiwidGFnIjoiIn0%3D ◀XSRF-TOKEN=eyJpdiI6IjRQMU0xZW0rYWdTaUVUS2NwZktTMkE9PSIsInZhbHVlIjoiWUZlck56dFIyQVJKOXZ3OHRUa0xrUS9mcExoYzNmZGdFb1pWUmNRZEJiem9laXZ5RmRzMFRKZFJmaGtkc1J0RitvWG9NZ ▶" ] "sec-fetch-dest" => array:1 [▶ 0 => "document" ] "sec-fetch-user" => array:1 [▶ 0 => "?1" ] "sec-fetch-mode" => array:1 [▶ 0 => "navigate" ] "sec-fetch-site" => array:1 [▶ 0 => "none" ] "accept" => array:1 [▶ 0 => "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7" ] "user-agent" => array:1 [▶ 0 => "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)" ] "upgrade-insecure-requests" => array:1 [▶ 0 => "1" ] "sec-ch-ua-platform" => array:1 [▶ 0 => ""Windows"" ] "sec-ch-ua-mobile" => array:1 [▶ 0 => "?0" ] "sec-ch-ua" => array:1 [▶ 0 => ""HeadlessChrome";v="129", "Not=A?Brand";v="8", "Chromium";v="129"" ] "cache-control" => array:1 [▶ 0 => "no-cache" ] "pragma" => array:1 [▶ 0 => "no-cache" ] "x-real-ip" => array:1 [▶ 0 => "18.191.255.240" ] "x-forwarded-server" => array:1 [▶ 0 => "debugerror.xyz" ] "x-forwarded-proto" => array:1 [▶ 0 => "https" ] "x-forwarded-port" => array:1 [▶ 0 => "443" ] "x-forwarded-host" => array:1 [▶ 0 => "debugerror.xyz" ] "x-forwarded-for" => array:1 [▶ 0 => "18.191.255.240" ] "host" => array:1 [▶ 0 => "debugerror.xyz" ] ]
0 of 0array:2 [▼ "XSRF-TOKEN" => "ZoLFbCUY1m10KhX3Q2OAjPOuq8M0VKtZmKkgfnb5" "satt_academy_session" => "gIJx9IlZMj7qG1j64Xl05glY1zRQHfyAuVt4zM3L" ]
0 of 0array:7 [▼ "content-type" => array:1 [▶ 0 => "text/html; charset=UTF-8" ] "cache-control" => array:1 [▶ 0 => "no-cache, private" ] "date" => array:1 [▶ 0 => "Fri, 18 Apr 2025 03:50:19 GMT" ] "x-ratelimit-limit" => array:1 [▶ 0 => "60" ] "x-ratelimit-remaining" => array:1 [▶ 0 => "51" ] "set-cookie" => array:2 [▶ 0 => "XSRF-TOKEN=eyJpdiI6ImlCbFd4UXpUYStKQjV4ZkNOVzUvMUE9PSIsInZhbHVlIjoieGQwS0NhT1RIYkpnbDZON01XZko1NEducUMyaDlZM3g3ZDM5dHRMQXprcVlLVFAwQlNTYjZxMnJRQ2ZtdW11cWQwUFEwOUx4VGc3dXhLRm1NSDZYU3haSzFZSHg1NEVpamM1RFg1WVJQV2FwT1c2MEFvcFRIY1dMaUJmQkFnTGsiLCJtYWMiOiJjMWRiZTEyMTRlY2IwOTg5ZjY5MDM0ZDhjMWQ5MGVjMWExYTgwMjI0NWMxYTFiMzVjYWU5MmU4ZTRhN2VmZjRhIiwidGFnIjoiIn0%3D; expires=Sat, 19 Apr 2025 03:50:19 GMT; Max-Age=86400; path=/; secure ◀XSRF-TOKEN=eyJpdiI6ImlCbFd4UXpUYStKQjV4ZkNOVzUvMUE9PSIsInZhbHVlIjoieGQwS0NhT1RIYkpnbDZON01XZko1NEducUMyaDlZM3g3ZDM5dHRMQXprcVlLVFAwQlNTYjZxMnJRQ2ZtdW11cWQwUFEwO ▶" 1 => "satt_academy_session=eyJpdiI6IlpHMVBEeHhnNFhQN2pTaDBYY25mQmc9PSIsInZhbHVlIjoicko5eFgvd0czRDFNYTN2dXduUkxhKzR2UFNyY0xUSEtqMmF1SGZROUdOS2puclN3R3FkR09DNHVhZG9xT1VVZ2tvK2o5QnVWSzF1U3prREF1UVgzcG1NVHhvdlBnbndBZ1ZrWFJ1a1hrblBBLzBsVHd6d2RHblk4TlBzKzFpNTQiLCJtYWMiOiI5ODBhMTQ4YzYzZTVjNjY2ZGFlNjg4YTliMzU2MjQ5NDljZTkwM2JiZDZhMTY4OTRlMTg5YzRhZDFhOWM2Y2MwIiwidGFnIjoiIn0%3D; expires=Sat, 19 Apr 2025 03:50:19 GMT; Max-Age=86400; path=/; secure; httponly ◀satt_academy_session=eyJpdiI6IlpHMVBEeHhnNFhQN2pTaDBYY25mQmc9PSIsInZhbHVlIjoicko5eFgvd0czRDFNYTN2dXduUkxhKzR2UFNyY0xUSEtqMmF1SGZROUdOS2puclN3R3FkR09DNHVhZG9xT1V ▶" ] "Set-Cookie" => array:2 [▶ 0 => "XSRF-TOKEN=eyJpdiI6ImlCbFd4UXpUYStKQjV4ZkNOVzUvMUE9PSIsInZhbHVlIjoieGQwS0NhT1RIYkpnbDZON01XZko1NEducUMyaDlZM3g3ZDM5dHRMQXprcVlLVFAwQlNTYjZxMnJRQ2ZtdW11cWQwUFEwOUx4VGc3dXhLRm1NSDZYU3haSzFZSHg1NEVpamM1RFg1WVJQV2FwT1c2MEFvcFRIY1dMaUJmQkFnTGsiLCJtYWMiOiJjMWRiZTEyMTRlY2IwOTg5ZjY5MDM0ZDhjMWQ5MGVjMWExYTgwMjI0NWMxYTFiMzVjYWU5MmU4ZTRhN2VmZjRhIiwidGFnIjoiIn0%3D; expires=Sat, 19-Apr-2025 03:50:19 GMT; path=/; secure ◀XSRF-TOKEN=eyJpdiI6ImlCbFd4UXpUYStKQjV4ZkNOVzUvMUE9PSIsInZhbHVlIjoieGQwS0NhT1RIYkpnbDZON01XZko1NEducUMyaDlZM3g3ZDM5dHRMQXprcVlLVFAwQlNTYjZxMnJRQ2ZtdW11cWQwUFEwO ▶" 1 => "satt_academy_session=eyJpdiI6IlpHMVBEeHhnNFhQN2pTaDBYY25mQmc9PSIsInZhbHVlIjoicko5eFgvd0czRDFNYTN2dXduUkxhKzR2UFNyY0xUSEtqMmF1SGZROUdOS2puclN3R3FkR09DNHVhZG9xT1VVZ2tvK2o5QnVWSzF1U3prREF1UVgzcG1NVHhvdlBnbndBZ1ZrWFJ1a1hrblBBLzBsVHd6d2RHblk4TlBzKzFpNTQiLCJtYWMiOiI5ODBhMTQ4YzYzZTVjNjY2ZGFlNjg4YTliMzU2MjQ5NDljZTkwM2JiZDZhMTY4OTRlMTg5YzRhZDFhOWM2Y2MwIiwidGFnIjoiIn0%3D; expires=Sat, 19-Apr-2025 03:50:19 GMT; path=/; secure; httponly ◀satt_academy_session=eyJpdiI6IlpHMVBEeHhnNFhQN2pTaDBYY25mQmc9PSIsInZhbHVlIjoicko5eFgvd0czRDFNYTN2dXduUkxhKzR2UFNyY0xUSEtqMmF1SGZROUdOS2puclN3R3FkR09DNHVhZG9xT1V ▶" ] ]
0 of 0array:3 [▼ "_token" => "ZoLFbCUY1m10KhX3Q2OAjPOuq8M0VKtZmKkgfnb5" "_previous" => array:1 [▶ "url" => "https://debugerror.xyz/admission/%E0%A6%B8%E0%A6%BF%E0%A6%AA%E0%A6%BE%E0%A6%B9%E0%A7%80-%E0%A6%AC%E0%A6%BF%E0%A6%A6%E0%A7%8D%E0%A6%B0%E0%A7%8B%E0%A6%B9-%E0%A7%A7%E0%A7%AE%E0%A7%AB%E0%A7%AD-94634 ◀https://debugerror.xyz/admission/%E0%A6%B8%E0%A6%BF%E0%A6%AA%E0%A6%BE%E0%A6%B9%E0%A7%80-%E0%A6%AC%E0%A6%BF%E0%A6%A6%E0%A7%8D%E0%A6%B0%E0%A7%8B%E0%A6%B9-%E0%A7%A ▶" ] "_flash" => array:2 [▶ "old" => [] "new" => [] ] ]