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Math JEE Mains Discussion L2

Math JEE Mains Discussion L2

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A middle school Math teacher wanted to start the topic of algebraic equations for his students. Before that, he wanted to check if the students are ready for it and decided to give a few problems to check their concepts. Which of these problems would be least relevant for this purpose?

le CAREERONE IT-JEE/MEDICAL/CBSE/STATE BOARD r of str. Line,circle,conics .tby+c=0and CAREEE Tthe evay of snccess SUB-MATHS Dpp (MA straight line through the point (2, 2kintersect -/3x +y=0ardar-y=Oat the points A and OP- equation of the line AB, so that ??AB is (a)r-2-0 theOPIC-C = 0 at the points A and 8-75, Th and B 75. (b) y-2=0 (d) None of these (c)x+y-4=0 ar ines such equal to (a)-16 (b) 16 ()4(d)-4 e 66. The centroid of the tiangle formed by the pair of Rlines 12r2 -20ry+7y Oand the line 2r-3y+4 ( 7 7)

Calculate the lattice enthalpy of MgBr_(2) from the given date: {:(Mg(s)+Br_(2)(l)rarrMgBr_(2)(s),,Delta_(f)H^(@)=-524 kJ mol^(-1)),(Mg(s)rarrMg(s),,Delta_(1)H^(@)=+148 kJ mol^(-1)),(Mg(g)rarrMg^(2+)(g)+2e^(-),,Delta_(2)H^(@)=+2187 kJ mol^(-1)),(Br_(2)(l)rarrBr_(2)(g),,Delta_(2)H^(@)=+2187 kJ mol^(-1)),(Br_(2)(l)rarrBr_(2)(g),,Delta_(3)H^(@)=+31 kJ mol^(-1)),(2Br(g)+2e^(-)rarr2Br(g),,Delta_(5)H^(@)=-662 kJ mol^(-1)):} Strategy : The thermochemical equation corresponding to lattice enthalpy of MgBr_(2) is {:(Mg^(2+)(g)+2Br^(-)(g)rarrMgr_(2)(s),,,Delta_("Lattice")H^(@)=?):} Add the last five thermochemical equations to the thermochemical equation corresponding to lattice enthalpy to get the thermochemical equation for the formation of MgBr_(2) (s) from its constituent element. Finally, calculate Delta_(Lattice) H^(@) , using the concept of Hess's law.

The behaviour of gases has been experessed in terms of various gas laws obtained experimentally Boyle s law Charles law Pressure temperature law Dalton s law of partial pressure Graham's law of diffusion and Avogadro's hypothesis Later on Maxwell derived Kinetic equation PV = (1)/(3) mnu^(2) theoretically by assuming the concept of molecules and their motion The term u reprsents root mean square speed of molecule If intermolecular forces vanishes among water molecules then volume occupied by 1.8g H_(2)o(l) at STP is .