6 public questions tagged with this topic.
'"I weep like a' means 'Simile' in context; usage confirms synonymy.
Ref: Cambridge Dictionary vocabulary context confirms word meaning compiled gathered collected from authentic manuscript sources accurately verified standard reference.
**Production of EM waves** requires accelerated charge, oscillating LC circuit produces changing E and B, antenna radiates when charge accelerates, frequency determined by L and C, f=1/(2π√(LC)). Hertz used spark gap with inductor and capacitor, produced ~10⁸ Hz radio waves, detected with loop, confirmed transverse nature, reflection, refraction, polarization, speed c. Electromagnetic waves transfer energy via oscillating electric and magnetic fields without a medium, while mechanical waves require a medium and transfer energy through particle vibrations. Using c = fλ, E₀/B₀ = c, I_d = ε₀ dΦ_E
Ref: NCERT > Physics Book > Electromagnetic Waves > Production of EM Waves and Hertz Experiment
Primary amines like CH₃CH₂CH₂NH₂ have higher boiling points due to extensive hydrogen bonding compared to secondary and tertiary amines, as per the PDF.
Ref: NCERT Class 12 Chemistry > Chapter 13: Amines > Topic: Reaction with Nitrous Acid and Diazonium Salts - Part 1
Propane-1,2-diol (CH₃CH(OH)CH₂OH) has two -OH groups, enhancing hydrogen bonding with water, making it more soluble than monohydric alcohols like propan-1-ol.
Ref: NCERT Class 12 Chemistry > Chapter 7: Alcohols, Phenols and Ethers > Topic: Preparation of Alcohols - from Alkenes Haloalkanes Carbonyls Grignard
Boiling point decreases with lower molecular weight. CH₃CH₂F has the lowest molecular weight among the options.
Ref: NCERT Class 12 Chemistry > Chapter 6: Haloalkanes and Haloarenes > Topic: Physical Properties - Boiling Point Dipole Moment Solubility
Amphibians have gills during their larval stage, while reptiles do not undergo such a transformation.
Ref: NCERT Class 11 Biology Chapter 4: Animal Kingdom Vertebrata - Amphibia and Reptilia
