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There are 200 questions in a 3 h examination. Among 200 questions, 50 are from Mathematics, 100 are from GK and 50 are from Science. Ram spent twice as much time on each Mathematics question as for each other question. How many minutes did he spend on Mathematics questions ?

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What will come in place of the question mark(?) in the following series of English alphabet? AE CG EI GK ?

A 2.5 cm cube of gelatin placed on a table, is subjected to a shearing fornce a o 0.5gk . The upper surface of the of the cube is displaced by 0.5cm. Calculate the shear modulus of gelatin.

0.05 kg steam at 373K and 0.45kg of ice at 253K are mixed in an insultated vessel. Find the equilibrium temperature of the mixture. Given, L_(fusion)=80cal//g=336J//g, L_(vaporization)=540 cal//g=2268J//g,C_(ice)=2100J//KgK=0.5calg//gK and S_(water)=4200J//KgK=1cal//gK