Doubtnut Learn and Fun - Class 9 & 10
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Publicaciones del Canal
🔥 VVIQ (Very Very Important Questions) with Answers | Session 2026–27 🔥
🎯 Score Full Marks with our Chapter-wise VVIQ PDFs prepared according to the latest CBSE 2026–27 syllabus & exam pattern.
✅ Available for ALL Classes
🔹 Class 9 – https://cutyurl.com/XAxQP
🔹 Class 10 – https://cutyurl.com/XAxQP
🔹 Class 11 –https://cutyurl.com/XAxQP
🔹 Class 12 – https://cutyurl.com/XAxQP
📥 Download and save the PDFs NOW! They may be removed anytime.
🔥 Last year, many students found that several board exam questions were same as provided in these PDFs⚠️ If any link doesn't open directly, simply copy and paste it into your Chrome browser.
🚀 Start solving these Chapter-wise VVIQs today and maximize your chances of scoring FULL marks in your CBSE Board Exams! 💯📚
| 2 | 🔰INORGANIC IN SHOTS🔰
✌️Increasings or Decreasing Order
✨01. Melting point=
Li > Na > K > Rb > Cs
✨02. Colour of the flame=
Li-Red, Na-Golden, K-Violet, Rb-Red, Cs-Blue, Ca-Brick red, Sr-Blood red, Ba-Apple green
✨03. Stability of hydrides =
LiH > NaH > KH > RbH> CsH
✨04. Basic nature of hydroxides=
LIOH < NaOH < KOH < RbOH < CsOH
✨05. Hydration energy=
Li> Na > K> Rb > Cs
✨06.) Reducing character=
Li > Cs > Rb > K > Na
✨07. Stability of +3 oxidation state=
B> Al > Ga > In > T1
✨08. Stability of +1 oxidation state= Ga < In < TI
✨09. Basic nature of the oxides and hydroxides=
B< Al< Ga < In < TI
✨10. Relative strength of Lewis acid= BF3 < BCl3 < BBr3 < BI3
✨11. Ionisation energy=
B> Al In SiO2 > Ge02 > SnO2 > PbO2
✨15. Reducing nature of hydrides=
CH4 < SiH4 < GeH4 < SnH4 < PbH4
✨16. Thermal stability of tetrahalides=
CCl4> SiCl4> GeCl4> SnCl4 > PbCl4
✨17. Oxidising character of M+4 species=
GeCl4 < SnCl4 < PbCl4
✨18. Ease of hydrolysis of tetrahalides=
SiCl4 < GeCl4 < SnCl4 < PbCI4
✨19. Acidic strength of trioxides=
N203 > P2O3 > As2O3
✨20. Acidic strength of pentoxides=
N2O2 > P2O2> As202 > Sb2O2 > Bi202
✨21) Acidic strength of oxides of nitrogen=
N2O < NO PH3 > AsH3 > SbH3 > BiH3
✨23. Stability of trihalides of nitrogen=
NF3 > NCl3 > NBr3
✨24.Lewis base strength=
NF3 PCI3 > AsCl3 > SbCl3 > BiCl3
✨26.Lewis acid strength of trihalides of P, As, and Sb=
PCl3 > ASCl3 > SbCl3
✨27. Lewis acid strength among phosphorus trihalides
PF3 > PCl3 > PBr3 > PI3
✨(28) Melting and boiling point of hydrides=
H2O > H2Te > H2Se >H2S
✨29. Volatility of hydrides=
H2O < H2Te < H2Se < H2S
✨30. Reducing nature of hydrides=
H2S < H2Se < H2Te
✨31. Covalent character of hydrides=
H2O < H2S < H2Se < H2Te
✨32. The acidic character of oxides (elements in the same oxidation state)=
SO2 > SeO2 > TeO2 > PoO2
SO3 > SeO3 > TeO3
✨33. Acidic character of oxide of a particular element (e.g. S)=
SO < SO2 < SO3
SO2 > TeO2 > SeO2 > PoO2
✨34. Bond energy of halogens=
Cl2 > Br2 > F2 > I2
✨35. Solubility of halogen in water =
F2 > Cl2 > Br2 > I2
✨36. Oxidising power=
F2 > Cl2 > Br2 > I2
✨37. Enthalpy of hydration of X ion=
F- > Cl- > Br- >I-
✨38. Reactivity of halogens:=
F> Cl> Br > I
✨39. Ionic character of M-X bond in halides
= M-F > M-Cl > MBr > M-I
✨40. Reducing character of X ion:=
I- > Br- > Cl- > F-
✨41. Acidic strength of halogen acids=
HI > HBr > HCI > HF
✨42 Reducing property of hydrogen halides
= HF < HCL < HBr < HI
✨43. Oxidising power of oxides of chlorine
= Cl2O > ClO2 > Cl206 > Cl2O7
✨44. Decreasing ionic size=
02- > F- > Na+ > Mg2+
✨45 Increasing acidic property=
Na2O3 < MgO < ZnO< P205
✨46 Increasing bond length=
N2 <02 < F2 < CL2
✨47 Increasing size=
Ca2+ < Cl- < S2-
✨48 Increasing acid strength=
HClO < HClO2 < HClO3 < HClO4 | 59 |
| 3 | 🔥🔥CLASS 10 SCIENCE TOPPERS NOTES 🎯For GUARANTEED 95+ PYQ ALSO GIVEN IN NOTES📝
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❇️CHEMICAL REACTIONS AND EQUATIONS
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❇️ACID BASES & SALTS
❇️METALS & NON METALS
❇️CARBON & ITS COMPOUND
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❇️LIFE PROCESSES
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❇️CONTROL & COORDINATION
https://1024terabox.com/s/19rg-6ECLF2qbv_4T7r94zA
❇️HOW DO ORGANISMS REPRODUCE
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❇️HEREDITARY & EVOLUTION
❇️LIGHT REFLECTION & REFRACTION
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❇️THE HUMAN EYE & COLORFUL WORLD
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❇️ELECRTICITY
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❇️MAGNETIC EFFECT OF ELECTRIC CURRENT
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❇️OUR ENVIRONMENT
https://1024terabox.com/s/1bNwoXMW7jnpRS_4mBoAkfQ | 69 |
| 4 |  +6Structure of Atom (Chemistry) Handwritten Notes | 49 |
| 5 | Chemical bonding notes❤️
(Ye chapter her chapter ki backbone h, isko z@rur revise kartey rehna)
Smjhey?😁❤️ | 79 |
| 6 |  +1Share & Support us | Drop ❤️ below | 104 |
| 7 |  +1Redox Reaction | 99 |
| 8 |  💢 ۴۰۰ 💵 رایگان
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🚨 آلفا اینوست ۴۰۰٪ سود تضمینی – شانس پولدار شدنت همین الانه! 💵
• چرا باید همین حالا اقدام کنی ❓
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🛡️ تضمین ۱۰۰٪ تا 29 خرداد ماه: اگه پولت از دست رفت، تیم بنده خسارتتو کامل جبران میکنه
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💬 سوالی داری؟ همین حالا بپرس و راهنماییت کنیم:
🚨 @FarshidFaroxi 🇮🇷 | 21 |
| 9 |  +2Ray optics | 102 |
| 10 | IMPORTANT
you can get 90-95%
Best Books to start your preparation for new session 2026-27 !! Read these books and do all questions easily (but do these books completely)
Based on new 2026-27 syllabus
CLASS 9th BOOKS
https://1024terabox.com/s/1DuCmAYgedbEyAqdXAza2XA
CLASS 10th BOOKS
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CLASS 11th BOOKS
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CLASS 12th BOOKS
https://1024terabox.com/s/1AZEFW-3uigws6m0uhN0bHA
Download and save these PDFs before deleting !! It might get deleted anytime
This year many questions were directly from these books only so download it fast for next session | 104 |
