Grade 9-12 exam based short note and worksheet
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Repost fromย Entrance Tricks ๏ธ๏ธ
๐Biology grade 9 all unit summarized short note
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๐ฅIncreasings or Decreasing Order๐ฅ
๐ด 01. Melting point=
Li > Na > K > Rb > Cs
๐ด 02. Colour of the flame=
Li-Red, Na-Golden, K-Violet, Rb-Red, Cs-Blue, Ca-Brick red, Sr-Blood red, Ba-Apple green
๐ด 03. Stability of hydrides =
LiH > NaH > KH > RbH> CsH
๐ด 04. Basic nature of hydroxides=
LIOH < NaOH < KOH < RbOH < CsOH
๐ด 05. Hydration energy=
Li> Na > K> Rb > Cs
๐ด 06. Reducing character=
Li > Cs > Rb > K > Na
๐ด 07. Stability of +3 oxidation state=
B> Al > Ga > In > T1
๐ด 08. Stability of +1 oxidation state= Ga < In < TI
๐ด 09. Basic nature of the oxides and hydroxides=
B< Al< Ga < In < TI
๐ด 10. Relative strength of Lewis acid= BF3 < BCl3 < BBr3 < BI3
๐ด 11. Ionisation energy=
B> Al <Ga > In <TI
๐ด 12. Reactivity=
C<Si< Ge < Sn <Pb
๐ด 13. Metallic character=
C< Si < Ge < Sn < Pb
๐ด 14. Acidic character of the oxides=
Co2 > SiO2 > Ge02 > SnO2 > PbO2
๐ด 15. Reducing nature of hydrides=
CH4 < SiH4 < GeH4 < SnH4 < PbH4
๐ด 16. Thermal stability of tetrahalides=
CCl4> SiCl4> GeCl4> SnCl4 > PbCl4
๐ด 17. Oxidising character of M+4 species=
GeCl4 < SnCl4 < PbCl4
๐ด 18. Ease of hydrolysis of tetrahalides=
SiCl4 < GeCl4 < SnCl4 < PbCI4
๐ด 19. Acidic strength of trioxides=
N203 > P2O3 > As2O3
๐ด 20. Acidic strength of pentoxides=
N2O2 > P2O2> As202 > Sb2O2 > Biโ202
๐ด 21. Acidic strength of oxides of nitrogen=
N2O < NO <N2O3 <N2O4 < N2O5
๐ด 22. Basic nature/ bond angle/ thermal stability and dipole moment of hydrides=
NH3 > PH3 > AsH3 > SbH3 > BiH3
๐ด 23. Stability of trihalides of nitrogen=
NF3 > NCl3 > NBr3
๐ด 24.Lewis base strength=
NF3 <NCl3 <NBr3 < NI3
๐ด 25. Ease of hydrolysis of trichlorides=
NCl3 > PCI3 > AsCl3 > SbCl3 > BiCl3
๐ด 26. Lewis acid strength of trihalides of P, As, and Sb=
PCl3 > ASCl3 > SbCl3
๐ด 27. Lewis acid strength among phosphorus trihalides
PF3 > PCl3 > PBr3 > PI3
๐ด 28. Melting and boiling point of hydrides=
H2O > H2Te > H2Se >H2S
๐ด 29. Volatility of hydrides=
H2O < H2Te < H2Se < H2S
๐ด 30. Reducing nature of hydrides=
H2S < H2Se < H2Te
๐ด 31. Covalent character of hydrides=
H2O < H2S < H2Se < H2Te
๐ด 32. The acidic character of oxides (elements in the same oxidation state)=
SO2 > SeO2 > TeO2 > PoO2
SO3 > SeO3 > TeO3
๐ด 33. Acidic character of oxide of a particular element (e.g. S)=
SO < SO2 < SO3
SO2 > TeO2 > SeO2 > PoO2
๐ด 34. Bond energy of halogens=
Cl2 > Br2 > F2 > I2
๐ด 35. Solubility of halogen in water =
F2 > Cl2 > Br2 > I2
๐ด 36. Oxidising power=
F2 > Cl2 > Br2 > I2
๐ด 37. Enthalpy of hydration of X ion=
F- > Cl- > Br- >I-
๐ด 38. Reactivity of halogens:=
F> Cl> Br > I
๐ด 39. Ionic character of M-X bond in halides
= M-F > M-Cl > MBr > M-I
๐ด 40. Reducing character of X ion:=
I- > Br- > Cl- > F-
๐ด 41. Acidic strength of halogen acids=
HI > HBr > HCI > HF
๐ด 42. Reducing property of hydrogen halides
= HF < HCL < HBr < HI
๐ด 43. Oxidising power of oxides of chlorine
= Cl2O > ClO2 > Cl206 > Cl2O7
๐ด 44. Decreasing ionic size=
02- > F- > Na+ > Mg2+
๐ด 45. Increasing acidic property=
Na2O3 < MgO < ZnO< P205
๐ด 46. Increasing bond length=
N2 <02 < F2 < CL2
๐ด 47. Increasing size=
Ca2+ < Cl- < S2-
๐ด 48. Increasing acid strength=
HClO < HClO2 < HClO3 < HClO4
๐ด 49. Increasing oxidation number of iodine=
HI< I2 <ICl <HIO4
๐ด 50. Increasing thermal stability=
HOCl < HOClO < HOClO2 < HOClO3
------------------------------------------------
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Grade 9-12 exam based short note and worksheet
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Repost fromย Top Students
แ แแต แจแแนแซแ แฐแแช แฌแแตแตแช แแญ แแซแแแธแ แจแแแก แแญแแแแฝ
๐ฅIncreasings or Decreasing Order๐ฅ
๐ด 01. Melting point=
Li > Na > K > Rb > Cs
๐ด 02. Colour of the flame=
Li-Red, Na-Golden, K-Violet, Rb-Red, Cs-Blue, Ca-Brick red, Sr-Blood red, Ba-Apple green
๐ด 03. Stability of hydrides =
LiH > NaH > KH > RbH> CsH
๐ด 04. Basic nature of hydroxides=
LIOH < NaOH < KOH < RbOH < CsOH
๐ด 05. Hydration energy=
Li> Na > K> Rb > Cs
๐ด 06. Reducing character=
Li > Cs > Rb > K > Na
๐ด 07. Stability of +3 oxidation state=
B> Al > Ga > In > T1
๐ด 08. Stability of +1 oxidation state= Ga < In < TI
๐ด 09. Basic nature of the oxides and hydroxides=
B< Al< Ga < In < TI
๐ด 10. Relative strength of Lewis acid= BF3 < BCl3 < BBr3 < BI3
๐ด 11. Ionisation energy=
B> Al <Ga > In <TI
๐ด 12. Reactivity=
C<Si< Ge < Sn <Pb
๐ด 13. Metallic character=
C< Si < Ge < Sn < Pb
๐ด 14. Acidic character of the oxides=
Co2 > SiO2 > Ge02 > SnO2 > PbO2
๐ด 15. Reducing nature of hydrides=
CH4 < SiH4 < GeH4 < SnH4 < PbH4
๐ด 16. Thermal stability of tetrahalides=
CCl4> SiCl4> GeCl4> SnCl4 > PbCl4
๐ด 17. Oxidising character of M+4 species=
GeCl4 < SnCl4 < PbCl4
๐ด 18. Ease of hydrolysis of tetrahalides=
SiCl4 < GeCl4 < SnCl4 < PbCI4
๐ด 19. Acidic strength of trioxides=
N203 > P2O3 > As2O3
๐ด 20. Acidic strength of pentoxides=
N2O2 > P2O2> As202 > Sb2O2 > Biโ202
๐ด 21. Acidic strength of oxides of nitrogen=
N2O < NO <N2O3 <N2O4 < N2O5
๐ด 22. Basic nature/ bond angle/ thermal stability and dipole moment of hydrides=
NH3 > PH3 > AsH3 > SbH3 > BiH3
๐ด 23. Stability of trihalides of nitrogen=
NF3 > NCl3 > NBr3
๐ด 24.Lewis base strength=
NF3 <NCl3 <NBr3 < NI3
๐ด 25. Ease of hydrolysis of trichlorides=
NCl3 > PCI3 > AsCl3 > SbCl3 > BiCl3
๐ด 26. Lewis acid strength of trihalides of P, As, and Sb=
PCl3 > ASCl3 > SbCl3
๐ด 27. Lewis acid strength among phosphorus trihalides
PF3 > PCl3 > PBr3 > PI3
๐ด 28. Melting and boiling point of hydrides=
H2O > H2Te > H2Se >H2S
๐ด 29. Volatility of hydrides=
H2O < H2Te < H2Se < H2S
๐ด 30. Reducing nature of hydrides=
H2S < H2Se < H2Te
๐ด 31. Covalent character of hydrides=
H2O < H2S < H2Se < H2Te
๐ด 32. The acidic character of oxides (elements in the same oxidation state)=
SO2 > SeO2 > TeO2 > PoO2
SO3 > SeO3 > TeO3
๐ด 33. Acidic character of oxide of a particular element (e.g. S)=
SO < SO2 < SO3
SO2 > TeO2 > SeO2 > PoO2
๐ด 34. Bond energy of halogens=
Cl2 > Br2 > F2 > I2
๐ด 35. Solubility of halogen in water =
F2 > Cl2 > Br2 > I2
๐ด 36. Oxidising power=
F2 > Cl2 > Br2 > I2
๐ด 37. Enthalpy of hydration of X ion=
F- > Cl- > Br- >I-
๐ด 38. Reactivity of halogens:=
F> Cl> Br > I
๐ด 39. Ionic character of M-X bond in halides
= M-F > M-Cl > MBr > M-I
๐ด 40. Reducing character of X ion:=
I- > Br- > Cl- > F-
๐ด 41. Acidic strength of halogen acids=
HI > HBr > HCI > HF
๐ด 42. Reducing property of hydrogen halides
= HF < HCL < HBr < HI
๐ด 43. Oxidising power of oxides of chlorine
= Cl2O > ClO2 > Cl206 > Cl2O7
๐ด 44. Decreasing ionic size=
02- > F- > Na+ > Mg2+
๐ด 45. Increasing acidic property=
Na2O3 < MgO < ZnO< P205
๐ด 46. Increasing bond length=
N2 <02 < F2 < CL2
๐ด 47. Increasing size=
Ca2+ < Cl- < S2-
๐ด 48. Increasing acid strength=
HClO < HClO2 < HClO3 < HClO4
๐ด 49. Increasing oxidation number of iodine=
HI< I2 <ICl <HIO4
๐ด 50. Increasing thermal stability=
HOCl < HOClO < HOClO2 < HOClO3
------------------------------------------------
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One: How can I improve my time management skills?Improving time management skills is a valuable goal that can enhance your productivity and reduce stress. Here are some strategies you can try: 1. Set Clear Goals: Establish long-term and short-term goals that are Specific, Measurable, Achievable, Relevant, and Time-bound (SMART). 2. Prioritize Tasks: Identify what tasks are most important and prioritize your to-do list accordingly. Use the Eisenhower Matrix to categorize tasks by urgency and importance. 3. Plan Ahead: Spend time planning your day, week, and month. A planner or digital calendar can help you keep track of your commitments and deadlines. 4. Block Time: Allocate specific time blocks for different activities or tasks. This method, known as time blocking, helps ensure dedicated time for important work. 5. Limit Distractions: Identify what typically distracts you in your work environment and take steps to minimize these distractions when you need to focus. 6. Use a Timer: The Pomodoro Technique, which involves working for 25 minutes followed by a 5-minute break, can boost efficiency and maintain focus. 7. Learn to Say No: Be mindful of your commitments and donโt overextend yourself. It's okay to say no to requests that don't align with your priorities. 8. Delegate: If possible, delegate tasks that others can do, especially if they're not crucial for you to personally handle. 9. Reflect: At the end of each day, reflect on what you accomplished and what could be improved. Adjust your approach and strategies as needed. 10. Self-Care: Don't forget to schedule time for relaxation and self-care. Managing time well also means allowing yourself to recharge. Remember that time management is a skill that takes practice to develop. Be patient with yourself as you try out different techniques to see what works best for you.
One: How can I improve my time management skills?Improving time management skills is a valuable goal that can enhance your productivity and reduce stress. Here are some strategies you can try: 1. Set Clear Goals: Establish long-term and short-term goals that are Specific, Measurable, Achievable, Relevant, and Time-bound (SMART). 2. Prioritize Tasks: Identify what tasks are most important and prioritize your to-do list accordingly. Use the Eisenhower Matrix to categorize tasks by urgency and importance. 3. Plan Ahead: Spend time planning your day, week, and month. A planner or digital calendar can help you keep track of your commitments and deadlines. 4. Block Time: Allocate specific time blocks for different activities or tasks. This method, known as time blocking, helps ensure dedicated time for important work. 5. Limit Distractions: Identify what typically distracts you in your work environment and take steps to minimize these distractions when you need to focus. 6. Use a Timer: The Pomodoro Technique, which involves working for 25 minutes followed by a 5-minute break, can boost efficiency and maintain focus. 7. Learn to Say No: Be mindful of your commitments and donโt overextend yourself. It's okay to say no to requests that don't align with your priorities. 8. Delegate: If possible, delegate tasks that others can do, especially if they're not crucial for you to personally handle. 9. Reflect: At the end of each day, reflect on what you accomplished and what could be improved. Adjust your approach and strategies as needed. 10. Self-Care: Don't forget to schedule time for relaxation and self-care. Managing time well also means allowing yourself to recharge. Remember that time management is a skill that takes practice to develop. Be patient with yourself as you try out different techniques to see what works best for you.
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