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Q.28 Of the given isomers of molecules Ι and ΙΙ, the meso-form is CH₃CH(Br)CH(Cl)CH₃ Ι CH₃CH(Cl)CH(Cl)CH₃ ΙΙ (A) (R,R)-isomer of Ι (B) (R,S)-isomer of ΙΙ (C) (R,S)-isomer of Ι (D) […]

Q.27 The major product in the following reaction is The major product is option (A), the alkene with an equatorial double bond and the isopropyl group trans (dashed) to it. […]

Q.26 Match the equations in the left column with their names in the right column Equations Names (i) ln Ka = ln A – Ea/RT (p) Kirchhoff’s law (ii) ln […]

Q.25 Consider two vectors P and Q of equal magnitude. If the magnitude of P + Q is two-times larger than that of P − Q, then the angle between […]

Q.24 An electron is accelerated from rest through a potential difference of 400 V. The electron then enters a uniform magnetic field that is perpendicular to the direction of electrons. […]

Q.23 An alpha particle and a proton have the same de Broglie wavelength. Which of the following is also the same for the two particles if they are moving at […]

Q.22 In a p-n junction, the depletion region has a width of 3 × 10-7 m and the intensity of electric field in the depletion region is 106 V/m. An […]

Q.21 Let Z be the set of all integers and f and g are one-one mappings from Z into itself. If    −−=++= nodd for n f(n) = […]

Q.20 Let P(t) denote the population of a species at time t. If P(t) is given by the equation dP/dt = P(1 – P) and if the initial population P(0) […]

Q.19 A line L parallel to the vector î + ĵ + k̂ passes through the point (1,2,4) and meets the xy-plane at a point P. The distance between the […]