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Draw the structure of the following molecule:
XeF4
Concept: P - Block Group 18 Elements >> Concept of Group 18 Elements
Write the equation involved in the following reaction:
Reimer-Tiemann reaction
Concept: Chemical Properties of Phenol
How do you convert toluene to benzoic acid?
Concept: Acids >> Nomenclature of Carboxylic Acids
Define terms: Fuel cell
Concept: Batteries >> Primary Batteries
Write two important advantages of reflecting telescope over a refracting telescope.
Concept: Optical Instruments >> Telescope
Propanal and Propanone
Concept: Aldehydes and Ketones >> Chemical Reactions of Aldehydes and Ketones - Oxidation
Write the chemical equation involved in the following reaction:
Hoffmann-bromamide degradation reaction
Concept: Amines >> Preparation of Amines
Illustrate the following reaction giving suitable example in each case:Gabriel phthalimide synthesis
Concept: Amines >> Preparation of Amines
Amino acids show amphoteric behaviour. Why?
Concept: Biomolecules in the Cell > Proteins >> Amino Acids
Why are infra-red waves often called heat waves? Explain.
Concept: Electromagnetic Spectrum
Draw the circuit diagram of a full wave rectifier. Explain its working showing its input and output waveforms.
Concept: Application of Junction Diode as a Rectifier
Write the cell reaction and calculate the e.m.f of the following cell at 298 K:
Sn(s) | Sn2+ (0.004 M) || H+ (0.020 M) | H2(g) (1 bar) | Pt(s)
(Given: `E_(Sn^(2+)"/"Sn)^° = -0.14` V)
Concept: Galvanic Cells - Measurement of Electrode Potential
Give reasons:
On the basis of E° values, O2 gas should be liberated at anode but it is Cl2 gas which is liberated in the electrolysis of aqueous NaCl.
Concept: Conductance of Electrolytic Solutions >> Measurement of the Conductivity of Ionic Solutions
Give reasons:
Conductivity of CH3COOH decreases on dilution.
Concept: Conductance of Electrolytic Solutions >> Measurement of the Conductivity of Ionic Solutions
Define the following term:
Essential amino acids
Concept: Biomolecules in the Cell > Proteins >> Amino Acids
Use Gauss' law to derive the expression for the electric field `(vecE)` due to a straight uniformly charged infinite line of charge density λ C/m.
Concept: Applications of Gauss' Theorem
What is Lanthanoid contraction?
Concept: F-block Elements >> The Lanthanoids
Write the S.I. unit of mutual inductance.
Concept: Inductance >> Mutual Inductance
A first-order reaction is 50% completed in 40 minutes at 300 K and in 20 minutes at 320 K. Calculate the activation energy of the reaction. (Given : log 2 = 0·3010, log 4 = 0·6021, R = 8·314 JK–1 mol–1)
Concept: Temperature Dependence of the Rate of a Reaction
