3. The reaction that is NOT involved ozone layer depletion mechanism stratosphere is! JEE MAINS JAN-2019 1) HOCI(E) 0 (x)+C1(e) 2) Cr,cl, (x) .cle)+lèrcice) 3) C10(g)+0(8) - (8)+0,(e) 4YCH, +20, -+ 3HCHO + 3H,0 Pero acrti pitrate (PAN an eyelitant

Which of the following points lie on the x-axis ? (i) A(0, 8) (ii) B(4, 0) (iii) C(0, -3) (iv) D(-6, 0) (v) E(2, 1) (vi) F(-2, -1) (vii) G(-1, 0) (viii) H(0, -2)

[" 5."lim_(x rarr0^(-(1)/(x)))" is : "],[[" (A) "e^((1)/(c))," (B) "e^(e)," (C) "e^(2)]]

The number of real roots of the equation x^5+e^(8x)=0 is (1)0 (2) 1 (3) 2 (4) 3

The number of real roots of the equation x^5+e^(8x)=0 is (1)0 (2) 1 (3) 2 (4) 3

E^(@) of two reactions are given below : Cr^(3+) + 3e rarr Cr, E^(@) = -0.74 V OCl^(-) + H_(2)O + 2e rarr Cl^(-) + 2OH^(-), E^(@) = 0.94 V What will be the E^(@) for ? 3OCl^(-) + 2Cr + 3H_(2)O rarr 2Cr^(3+) + 3Cl^(-) + 6OH^(-)

E^(@) for two reactions are given below : Cr^(+3) + 3e^(-) to Cr , E^(@) = - 0.74 V Ocl^(-) + H_2O + 2e^(-) to Cl^(-) + 2OH^(-) , 2OH , E^(@) = 0.94 V What will be the E^(@) for 3OCl^(-) + 2Cr + 3H_2O to 2Cr^(+3) + 3Cl^(-) + 6OH^(-)

Evaluate: lim_(h rarr 0) (e^(2h)-1)/(e^(3h)-1)

Construct the cell corresponding to the reaction : 3Cr^(2+)(1M)rarr 2Cr^(3+)(1M)+Cr(s) and predict if the reaction is spontaneous. Also calculate the following (i) Delta H and Delta S of the reaction at 25^(@)C . Given E_(Cr^(3+),Cr)^(@)=0.5 V, E_(Cr^(3+),Cr^(2+))=-0.41 V Delta G of the reaction at 35^(@)C =-270.50 kJ