Chem fortistgtpgtgdcneetjee
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Chem fortistgtpgtgdcneetjee
What should be cutoff of kvs nvs pgt tier1
1 day ago | [YT] | 6
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Chem fortistgtpgtgdcneetjee
Quick KVS/NVS computer cheat sheet
- Basic hardware:
- CPU parts: ALU + Control Unit + Registers
- Memory: RAM = volatile, ROM = non‑volatile
- Cache levels: L1 fastest, L3 larger
- Storage units: 1 KB = 1024 bytes; 1 MB = 1024 KB; 1 GB = 1024 MB
- Devices & printers:
- Input: Keyboard, mouse, scanner
- Output: Monitor, printer, speaker
- Printers: Inkjet (droplets), Laser (toner), Dot‑matrix (impact)
- OS & files:
- OS examples: Windows, Linux, macOS, Android
- File extensions: .docx (Word), .xlsx (Excel), .pptx (PowerPoint), .pdf, .jpg/.jpeg, .png, .zip, .mp3, .mp4
- File operations: Copy, move, rename, delete; Recycle Bin restore
- MS Word shortcuts:
- Ctrl + B/I/U: Bold/Italic/Underline
- Ctrl + S/P/Z/X/C/V/F: Save/Print/Undo/Cut/Copy/Paste/Find
- Alignment: Ctrl + L/C/R = Left/Center/Right
- MS Excel essentials:
- Common functions: =SUM(), =AVERAGE(), =MAX(), =MIN(), =COUNT()
- Lookup: =VLOOKUP(value, table, col, [range])
- Cell refs: A1 (relative), $A$1 (absolute), A$1/$A1 (mixed)
- Sheets: Rename, add, move; sort/filter basics
- PowerPoint tips:
- Slideshow: F5 start, Shift + F5 current slide
- New slide: Ctrl + M
- Design: Themes, transitions, animations (use lightly)
- Internet & networking:
- URL & DNS: DNS domain ko IP me translate karta hai
- Protocols & ports: HTTP: 80, HTTPS: 443, FTP: 21, SSH: 22
- Email: SMTP (send), POP3/IMAP (receive)
- IPv4: 32 bits; Loopback: 127.0.0.1
- Devices: Hub (broadcast), Switch (MAC-based), Router (routes between networks)
- Topologies: Bus, Star (common), Ring, Mesh
- Cybersecurity basics:
- Malware types: Virus, Worm, Trojan, Ransomware, Spyware
- Protection: Antivirus, Firewall, Updates, Strong passwords, 2FA
- Phishing: Fake emails/sites to steal info—verify sender/URL
- Cloud & models:
- IaaS: Infra on rent (e.g., VMs)
- PaaS: Platform to build apps
- SaaS: Ready apps (e.g., Gmail, Google Docs)
- Data & DBMS:
- DBMS examples: MySQL, SQL Server, Oracle
- SQL basics: SELECT, INSERT, UPDATE, DELETE
- Keys: Primary key (unique), Foreign key (relational)
- Binary quickies:
- Binary to decimal: 1010₂ = 10
- Hex basics: A-F = 10–15; 0xFF = 255
- Ctrl + S: Save
- Excel sum: =SUM(A1:A10)
- HTTP port: 80; HTTPS: 443
- RAM: Volatile
- IPv4 bits: 32
- Loopback: 127.0.0.1
- DNS ka kaam: Domain → IP
- .pptx: PowerPoint file
- Router: Different networks connect karta hai
- Phishing: Fake communication to steal credentials
2 days ago | [YT] | 7
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Chem fortistgtpgtgdcneetjee
Hyper conjunction
4 weeks ago | [YT] | 5
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Chem fortistgtpgtgdcneetjee
inclusion compounds
4 weeks ago | [YT] | 6
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Chem fortistgtpgtgdcneetjee
Hyperconjugation stabilizes:
a) Only carbocations
b) Only free radicals
c) Only carbanions
d) All electron-deficient species
1 month ago | [YT] | 4
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Chem fortistgtpgtgdcneetjee
Hyperconjugation is also known as:
a) Baker-Nathan effect
b) Inductive effect
c) Mesomeric effect
d) Electromeric effect
1 month ago | [YT] | 2
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Chem fortistgtpgtgdcneetjee
The stability order of carbocations by hyperconjugation is:
(a) 3° > 2° > 1° > CH₃⁺
(b) CH₃⁺ > 1° > 2° > 3°
(c) 1° > 3° > 2° > CH₃⁺
(d) 2° > 1° > 3° > CH₃⁺
1 month ago | [YT] | 2
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Chem fortistgtpgtgdcneetjee
Hyperconjugation is observed in:
(a) CH₃-CH=CH₂
(b) CH₂=CH₂
(c) HC≡CH
(d) CH₄
1 month ago | [YT] | 2
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Chem fortistgtpgtgdcneetjee
1 month ago | [YT] | 4
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Chem fortistgtpgtgdcneetjee
Wishing you all the very best as you prepare to conquer this exam Ltgrade science! Your dedication and hard work are the foundation of your success. Believe in yourself and stay focused—every challenge is an opportunity to grow stronger.Remember the words of Nelson Mandela:
“It always seems impossible until it’s done.” Keep pushing forward, and success will be yours. Good luck!
With warm regards,
Deep IIT D
1 month ago | [YT] | 5
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