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Define terms: Fuel cell
Concept: Batteries > Primary Batteries
Write two important advantages of reflecting telescope over a refracting telescope.
Concept: Optical Instruments: Telescope
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
Give the truth table and circuit symbol for NAND gate
Concept: Digital Electronics and Logic Gates
Give reason for the following:
Primary amines have higher boiling point than tertiary amines.
Concept: Physical Properties of Amines
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
On the basis of crystal field theory, write the electronic configuration for d4 ion if ∆0 < P.
Concept: Bonding in Coordination Compounds > Crystal Field Theory (CFT)
Identify the part of the electromagnetic spectrum which is suitable for radar system used in aircraft navigation.
Concept: Electromagnetic Spectrum
State Henry’s law.
Concept: Solubility > Solubility of a Gas in a Liquid
Draw a labelled ray diagram showing the formation of a final image by a compound microscope at least distance of distinct vision
Concept: Optical Instruments: Simple Microscope
State de Broglie hypothesis
Concept: de-Broglie Relation
Mention any three characteristics of Neanderthal man that lived in near east and central Asia.
Concept: Human Evolution
Define azeotropes.
Concept: Vapour Pressure of Liquid > Vapour Pressure of Liquid- Liquid Solutions
Account for the following :
Zn is not considered as a transition element.
Concept: General Properties of the Transition Elements (D-block)
Write the chemical equations to illustrate the following name reactions : Rosenmund reduction
Concept: Aldehydes and Ketones > Preparation of Aldehydes
If y = xx, prove that `(d^2y)/(dx^2)−1/y(dy/dx)^2−y/x=0.`
Concept: Simple Problems on Applications of Derivatives
Show that the altitude of the right circular cone of maximum volume that can be inscribed in a sphere of radius r is `(4r)/3`. Also find maximum volume in terms of volume of the sphere
Concept: Maxima and Minima
Find : `int(x+3)sqrt(3-4x-x^2dx)`
Concept: Methods of Integration: Integration by Substitution
Solve the differential equation:
(1 + y2) dx = (tan−1 y − x) dy
Concept: General and Particular Solutions of a Differential Equation
Explain any three scoring systems in badminton.
Concept: Rules of the Badminton Game
