function zn_norm_path( $url ) { $p = wp_parse_url( html_entity_decode( trim( $url ) ) ); if ( ! $p ) return ''; $host = isset( $p['host'] ) ? strtolower( preg_replace( '/^www\./', '', $p['host'] ) ) : ''; if ( $host && $host !== 'zahidenotes.com' ) return ''; return '/' . trim( strtolower( isset( $p['path'] ) ? $p['path'] : '' ), '/' ); } function zn_tokens( $s ) { $s = preg_replace( '/_\d+$/', '', strtolower( $s ) ); $parts = preg_split( '/[^a-z0-9]+/', $s, -1, PREG_SPLIT_NO_EMPTY ); $stop = array( 'the', 'of', 'to', 'for', 'and', 'a', 'an', 'in', 'on', 'pdf', 'download', 'free', 'by', 'with', 'is', 'your', 'at', 'all' ); $out = array(); foreach ( $parts as $w ) { if ( in_array( $w, $stop, true ) ) continue; if ( preg_match( '/^20[1-3]\d$/', $w ) ) continue; if ( strlen( $w ) > 3 && substr( $w, -1 ) === 's' ) $w = substr( $w, 0, -1 ); $out[ $w ] = true; } return array_keys( $out ); } function zn_score( $a, $b ) { if ( ! $a || ! $b ) return 0; $i = count( array_intersect( $a, $b ) ); if ( ! $i ) return 0; $u = count( array_unique( array_merge( $a, $b ) ) ); return 0.7 * ( $i / count( $a ) ) + 0.3 * ( $i / $u ); } /* 404 par: jo purana URL approve ho chuka hai usay naye page par 301 */ add_action( 'template_redirect', function () { if ( ! is_404() ) return; $path = '/' . trim( strtolower( (string) parse_url( $_SERVER['REQUEST_URI'], PHP_URL_PATH ) ), '/' ); $map = get_option( 'zn_map', array() ); if ( isset( $map[ $path ] ) && strpos( $map[ $path ], 'id:' ) === 0 ) { $l = get_permalink( (int) substr( $map[ $path ], 3 ) ); if ( $l ) { wp_redirect( $l, 301 ); exit; } } }, 0 ); add_action( 'admin_menu', function () { add_management_page( 'ZN Link Mapper', 'ZN Link Mapper', 'manage_options', 'zn-mapper', 'zn_mapper_page' ); } ); function zn_mapper_form( $act, $offset, $label, $auto = false, $extra = '' ) { echo '
'; wp_nonce_field( 'zn_map' ); echo '' . $extra; echo '
'; if ( $auto ) echo ''; } function zn_mapper_page() { if ( ! current_user_can( 'manage_options' ) ) return; echo '

ZN Link Mapper

'; if ( ! function_exists( 'zn_link_is_broken' ) || ! function_exists( 'zn_find_post_id' ) ) { echo '

Pehle ZN Fixer aur ZN Link Cleaner snippets active hone chahiye.

'; return; } global $wpdb; $act = isset( $_POST['act'] ) ? sanitize_key( $_POST['act'] ) : ''; $offset = isset( $_POST['offset'] ) ? absint( $_POST['offset'] ) : 0; if ( $act ) check_admin_referer( 'zn_map' ); $batch = 50; $busy = false; /* ---- 1) SCAN ---- */ if ( $act === 'scan' ) { $scan = $offset === 0 ? array() : get_option( 'zn_scan', array() ); $ids = $wpdb->get_col( $wpdb->prepare( "SELECT ID FROM {$wpdb->posts} WHERE post_type IN ('post','page') AND post_status IN ('publish','draft','private') ORDER BY ID ASC LIMIT %d OFFSET %d", $batch, $offset ) ); foreach ( $ids as $id ) { $c = $wpdb->get_var( $wpdb->prepare( "SELECT post_content FROM {$wpdb->posts} WHERE ID=%d", $id ) ); if ( ! preg_match_all( '#]*?href=(["\'])(.*?)\1#is', $c, $mm ) ) continue; foreach ( $mm[2] as $u ) { if ( ! zn_link_is_broken( $u ) ) continue; $path = zn_norm_path( $u ); if ( ! $path || $path === '/' ) continue; $scan[ $path ] = isset( $scan[ $path ] ) ? $scan[ $path ] + 1 : 1; } } update_option( 'zn_scan', $scan, false ); $offset += count( $ids ); if ( count( $ids ) === $batch ) { $busy = true; echo '

Scan ho raha hai... ' . (int) $offset . ' items check hue. Tab band na karein.

'; zn_mapper_form( 'scan', $offset, 'Agla batch', true ); } else { echo '

Scan mukammal. ' . count( $scan ) . ' alag broken URLs mile. Neeche review karein.

'; } } /* ---- 2) SAVE ---- */ if ( $act === 'save' ) { $map = get_option( 'zn_map', array() ); $paths = isset( $_POST['p'] ) ? (array) wp_unslash( $_POST['p'] ) : array(); $chs = isset( $_POST['m'] ) ? (array) wp_unslash( $_POST['m'] ) : array(); foreach ( $paths as $h => $path ) { $path = sanitize_text_field( $path ); $v = isset( $chs[ $h ] ) ? sanitize_text_field( $chs[ $h ] ) : 'skip'; if ( $v === 'remove' || preg_match( '/^id:\d+$/', $v ) ) $map[ $path ] = $v; else unset( $map[ $path ] ); } update_option( 'zn_map', $map, false ); echo '

Choices save ho gaye. Jo URL "naye page" par set hain unka purana link Google/visitors ke liye bhi ab naye page par redirect hoga.

'; } /* ---- 3) APPLY ---- */ if ( $act === 'apply' ) { $dry = ! empty( $_POST['dry'] ); $map = get_option( 'zn_map', array() ); $ids = $wpdb->get_col( $wpdb->prepare( "SELECT ID FROM {$wpdb->posts} WHERE post_type IN ('post','page') AND post_status IN ('publish','draft','private') ORDER BY ID ASC LIMIT %d OFFSET %d", $batch, $offset ) ); $re = 0; $rm = 0; $posts = 0; foreach ( $ids as $id ) { $old = $wpdb->get_var( $wpdb->prepare( "SELECT post_content FROM {$wpdb->posts} WHERE ID=%d", $id ) ); $new = preg_replace_callback( '#]*?href=(["\'])(.*?)\1[^>]*>(.*?)#is', function ( $m ) use ( $map, &$re, &$rm ) { $path = zn_norm_path( $m[2] ); if ( ! $path || ! isset( $map[ $path ] ) ) return $m[0]; $ch = $map[ $path ]; if ( $ch === 'remove' ) { $rm++; return $m[3]; } if ( strpos( $ch, 'id:' ) === 0 ) { $link = get_permalink( (int) substr( $ch, 3 ) ); if ( ! $link ) return $m[0]; $frag = ( ( $h = strpos( $m[2], '#' ) ) !== false ) ? substr( $m[2], $h ) : ''; $pos = strpos( $m[0], $m[2] ); $re++; return substr_replace( $m[0], $link . $frag, $pos, strlen( $m[2] ) ); } return $m[0]; }, $old ); if ( $new === null || $new === $old ) continue; $posts++; if ( ! $dry ) { if ( ! get_post_meta( $id, '_zn_backup_map', true ) ) add_post_meta( $id, '_zn_backup_map', wp_slash( $old ), true ); $wpdb->update( $wpdb->posts, array( 'post_content' => $new ), array( 'ID' => $id ) ); clean_post_cache( $id ); } } $offset += count( $ids ); echo '

' . ( $dry ? 'DRY RUN: ' : '' ) . (int) $offset . ' items check hue. Is batch mein ' . $posts . ' posts, ' . $re . ' links naye page par, ' . $rm . ' links hata diye' . ( $dry ? ' (kuch save nahi hua)' : '' ) . '.

'; if ( count( $ids ) === $batch ) { $busy = true; zn_mapper_form( 'apply', $offset, 'Agla batch', true, $dry ? '' : '' ); } else { echo '

Mukammal.

'; } } if ( $busy ) { echo ''; return; } /* ---- Buttons ---- */ echo '

Step 1:

'; zn_mapper_form( 'scan', 0, 'Scan karo (broken links dhoondo)' ); $scan = get_option( 'zn_scan', array() ); if ( ! $scan ) { echo ''; return; } arsort( $scan ); $map = get_option( 'zn_map', array() ); /* ---- Review ---- */ $pool = array(); foreach ( $wpdb->get_results( "SELECT ID, post_title, post_name, post_type FROM {$wpdb->posts} WHERE post_status='publish' AND post_type IN ('post','page')" ) as $r ) { $pool[] = array( 'id' => (int) $r->ID, 'title' => $r->post_title, 'type' => $r->post_type, 'tok' => zn_tokens( $r->post_title . ' ' . $r->post_name ) ); } echo '

Step 2: Review

Har purane URL ke saamne sahi page chunein. "Abhi chhod do" ka matlab link jaisa hai waisa rahega. Jo URL kisi page se match nahi karte unhe "Link hata do" par rakhein.

'; echo '
'; wp_nonce_field( 'zn_map' ); echo ''; foreach ( $scan as $path => $n ) { $h = md5( $path ); $slug = basename( $path, '.html' ); $tok = zn_tokens( $slug ); $isP = strpos( $path, '/p/' ) === 0; $numbered = (bool) preg_match( '/_\d+\.html$/', $path ); $c = array(); foreach ( $pool as $p ) { $s = zn_score( $tok, $p['tok'] ); if ( $isP && $p['type'] === 'page' ) $s += 0.05; if ( $s > 0.15 ) $c[] = array( 's' => $s, 'p' => $p ); } usort( $c, function ( $a, $b ) { return $b['s'] <=> $a['s']; } ); $c = array_slice( $c, 0, 4 ); if ( isset( $map[ $path ] ) ) { $sel = $map[ $path ]; } elseif ( $c && ! $numbered && $c[0]['s'] >= 0.6 && ( ! isset( $c[1] ) || $c[0]['s'] - $c[1]['s'] >= 0.1 ) ) { $sel = 'id:' . $c[0]['p']['id']; } else { $sel = 'skip'; } echo ''; } echo '
Purana URLKitni baarKya karna hai
' . esc_html( $path ) . ( $numbered ? '
numbered slug: asli post andaze se nahi milega' : '' ) . '		' . (int) $n . '

'; echo '

Step 3: Articles mein lagao

Pehle Dry run, phir asli.

'; zn_mapper_form( 'apply', 0, 'Dry run (sirf check)', false, '' ); zn_mapper_form( 'apply', 0, 'Asli apply karo' ); echo ''; }

1st year chemistry short questions notes pdf

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This post will be updated when short questions notes for chemistry 1st year will be published. 1st year chemistry short questions notes will be given here in pdf. 
Zahid Notes is providing free educational resources like notes, guess papers, tests, guides books and related content to the teachers and the students.

1st year chemistry short questions notes

The link below will be updated soon when the notes are ready to be published on our website. You will be able to download these notes right from this page.


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1st year chemistry short questions notes pdf

Please keep visiting this page for chemistry notes. I am preparing extraordinary notes for you. 

1st year chemistry short questions notes have been taken from the exercises of all chapters. Many additional Short questions have been added from every chapter. 

1st year chemistry notes pdf download

So, this is all chapter full book short questions notes of chemistry 1st year.
Also See:
Now if you find these notes helpful, like the post. You can download 1st year chemistry notes chapter wise. The full book notes are also given.
1st year year chemistry notes of full book download in pdf. Chapter wise important questions are given in the guess paper.

1st year notes

Here are the links to other notes for 1st year. Download all subject notes in pdf. Now please note that 2nd year full book chemistry notes contain exercise short questions with answers. 
You can download that file and learn short questions there.

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