Pre Mains Checklist

• [X] Elasticity formulae (such as modulus of rigidity, young’s modulus, bulk modulus and their interconversions)
  
• [X] Center of mass, moment of inertia of various arrangements (anki)
  

• [X] Thermodynamics process formulae (polytropic in general and also most important)
  
• [X] Calorimetry - Law of Mixture
  
• [X] Thermal expansion/stress/strain
  
• [X] Change in time-period of pendulum due to thermal expansion.
  \[ \text{Fractional change} = \frac{T' - T}{T} = \frac{1}{2}\alpha \ \Delta \theta \]
  
• [X] Variation of density with temperature
  \[ \rho = \frac{\rho_0}{1 + \gamma \ \Delta T} \]
  
• [X] Bimetallic strip
  

\[ R = \frac{d}{(\alpha_2 - \alpha_1) \ \Delta T} \]
Here, \( d \) is the width of bimetallic strip(combined).

• [X]

  Field and Potential due to configuration of masses and charges of various arrangements and symmetries
  

  Potential energy of chared solid sphere
  \[ U = \frac{3}{5} \frac{KQ^2}{R} \]
  

  Potential energy of thin layered sphere
  \[ U = \frac{1}{2} \frac{KQ^2}{R} \]
  

• [ ] Senstivity of galvanometer
  

• [X] Organ pipe (the most annoying)
  

• [X]

  EM Waves, wavelength range, production and uses.
  Radio Waves
  

  • Produced by rapid acceleration/deceleration of electrons.
    
  • Used in communication devices.
    

  Microwaves
  

  • Used in speed guns, RADAR like devices.
    
  • Produced by klystron/magnetron valves.
    

  Infrared
  

  • Used in physical therapy.
    
  • Produced by hot bodies.
    
  • Responsible for greenhouse effect.
    

  UV
  

  • Used in LASIK eye surgery, causes excess growth of melanin in skin.
    

  X-rays
  

  • Produced when electrons strike metals.
    
  • Used in Cancer treatement.
    
• [ ] Optical instruments
  

• [X] Alpha particle trajectory deviation formula
  \[ \tan \frac{\theta}{2} = \frac{K Z e^2}{mv_0^2 b} \]
  Where, \( b \) is the aiming parameter.
  

• Measurement devices (NCERT practical book)
  

• [X] Oxidation, Reduction, Hydrolysis (The bad boy of organic chemistry)
  
• [X] Nucleophilic attact on alpha, beta positions in conjugated carbonyls
  Grignard reagant(\( \ce{RMgX} \) ) results in addition of nucleophile at carbonyl carbon, whereas Gillman’s reagant(\( \ce{R_2CuLi} \) ) results in addition at \( \beta \) carbon.
  
• [X] Named Reactions
  
• [X] Test of organic compounds
  
• Biomolecules
  
  • [X] Test for biomolecules
    
  • [ ] Biomolecules structures
    
  • [X] Reactions of glucose
    
  • [ ] Types of linkage(NCERT)
    

• [X] V.S. of \( \ce{H_2O_2} \) , Molarity, Normality, Percent free oleum and other basic physical chemistry stuffs.
  
• [ ] Electrolysis Product
  
• [X] Thermodynamics processes
  
• [X] Atomic structure
  \[ \text{Orbital angular} = \sqrt{l(l+1)} \ \hbar \]
  \[ \text{Spin angular momentum} = \sqrt{s(s+1)} \ \hbar \]
  \[ \text{Spin-only magnetic moment} = \sqrt{n(n+2)} \text{ B.M.} \]
  

• [ ] Trends, chemical properties, compounds of d-block.
  
• [ ] Structures of various compounds.
  
• [X] Coordination Chemistry (tetrahedral and octahedral complexes)
  
• [X] CFT and Hybridization theory
  
• [ ] Qualitative Analysis(colors of salts)
  
• [X] Synergic bonded compounds structures
  
• [X] Synergic bonding properties
  \[ \text{Synergic bonding} \propto \text{Number of lone pairs on metal} \]
  If lone pairs on metal are same:
  \[ \text{Synergic bonding} \propto \text{Electronic Charge density on metal } \]
  Note: Greater the synerginc bonding between metal and carbon, lower the bond order of carbon oxygen bond will be.