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*Image* *Image* *Image* ...
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1) Equimolar quantities of each of the following substances are dissolved in enough water to make 1 L of solution. Arrange the solution so prepared in order of increasing pH. (a) KHSO4 (b) NaHCO3 (c) Na2O (d) HClO4 (e) CH3 NH ...
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1) A flat square sheet of charge of side 50 cm carries a uniform surface charge density. An electron 0.5 cm from a point near the centre of the sheet experiences a force of 1.8 X 10 - 12 N, directed away from the sheet. Deter ...
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1) A flat square sheet of charge of side 50 cm carries a uniform surface charge density. An electron 0.5 cm from a point near the centre of the sheet experiences a force of 1.8 X 10 - 12 N, directed away from the sheet. Deter ...
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Predict the major product of the given reaction :- *Image* ...
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1) Ina plane there are two families of lines Y = x + r, Y = -x + r , where r belongs to {0,1,2,3,4}. The number of squares of diagonols of length 2 formed by the lines is :- (a) 9 (b) 16 (c) 25 (d) None of these ...
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2) Given a subset X = {x1 , x2 , x3, ..............., x n } a subset P of X is formed and set is reconstructed by replacing the elements of P into X and then another subset Q of X is formed. Find the total no. of pair of subs ...
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hi everyone ! i was of the opinion that we can handle inorganic chemistry for coming year's JEE in a different way ! all of us have observed the questions in the recent 5 years JEE papers ! so, what we can do is collect bits ...
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find the area of the triangle which the straight line 3x+4y-12=0forms with the co-ordinate axes? ...
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*Image* In the given figure, u have the road plan of a city. A man standing at X wants to reach the cinema hall at Y by the shortest path. (i) Find the no. of different paths that he can take. (ii) Find the no. of shortest ro ...
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A man invites a party to (m+n) friends to dinner and places m at one round table and n at other.Find the no. of ways of arranging the guests . ...
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MORE THAN ONE CORRECT Q1 active mass = a)a=f.Cm b)a=r.Cm c)Amount of substance per unit volume d)No. of moles per unit litre Q2 consider eq eqn CH3COOH +HF <---->CH3COOH2 - +F - a)F- is conj base of HF b)F- is conj base ...
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*Image* This reaction sequence can start with a :- (a) 1° alcohol (b) 2 ° alcohol (c) 3° alcohol (d) Phenol ...
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*Image* This reaction sequence can start with a :- (a) 1° alcohol (b) 2 ° alcohol (c) 3° alcohol (d) Phenol ...
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The OH group of methyl alcohol cannot be replaced by chlorine by the action of (a) Cl 2 (b) H Cl (c)P Cl 3 (d) P Cl 5 ...
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The OH group of methyl alcohol cannot be replaced by chlorine by the action of (a) Cl 2 (b) H Cl (c)P Cl 3 (d) P Cl 5 ...
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1) The dissociation const of monobasic acids A,B,C and D are 6 X 10 -4, 5 X10 -5 , 3.6 X 10 -6 and 7 X10 - 10 respectively. pH values of their 0.1 molar aqueous solution are in the order (a) A >B> C >D (b) D>B> ...
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1) The dissociation const of monobasic acids A,B,C and D are 6 X 10 -4, 5 X10 -5 , 3.6 X 10 -6 and 7 X10 - 10 respectively. pH values of their 0.1 molar aqueous solution are in the order (a) A >B> C >D (b) D>B> ...
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1) The no. of points at which the function f(x) = max {a-x , a+x, b}, - ∞ < x < ∞ , 0 <a < b cannot be differentiable is: (a)2 (b) 3 (c)1 (d) 0 2) If f(x) = sin (2∩ [ ∩2 - x] )/5 +[x] 2 ; where [.] denotes ...
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1) The no. of points at which the function f(x) = max {a-x , a+x, b}, - ∞ < x < ∞ , 0 <a < b cannot be differentiable is: (a)2 (b) 3 (c)1 (d) 0 2) If f(x) = sin (2∩ [ ∩2 - x] )/5 +[x] 2 ; where [.] denotes ...
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1) The no. of points at which the function f(x) = max {a-x , a+x, b}, - ∞ < x < ∞ , 0 <a < b cannot be differentiable is: (a)2 (b) 3 (c)1 (d) 0 2) If f(x) = sin (2∩ [ ∩2 - x] )/5 +[x] 2 ; where [.] denotes ...
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If the eqn ax2+bx+c=0 (0 < a < b< c) has non real complex roots z1 and z2. Show that |z1| > 1 ; |z2| > 1. ...
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1. \int_{0}^{\pi /4}{ln(1+tant) dt} 2. \int (x.e^t^a^n^^^-^^^1^x)dx / (\sqrt{1+x^2}) ...
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1) The benzyl cation in C6H5CH=CH-COOH is:- (a) Linearly placed w.r.t benzene ring and carboxyl group (b) Triangular shaped (c) Tetrahedral in shape (d) At 90 ° to the plane of benzene ring 2) The dipole moment of vinyl chlo ...
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1) The benzyl cation in C6H5CH=CH-COOH is:- (a) Linearly placed w.r.t benzene ring and carboxyl group (b) Triangular shaped (c) Tetrahedral in shape (d) At 90 ° to the plane of benzene ring 2) The dipole moment of vinyl chlo ...
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1) The benzyl cation in C6H5CH=CH-COOH is:- (a) Linearly placed w.r.t benzene ring and carboxyl group (b) Triangular shaped (c) Tetrahedral in shape (d) At 90 ° to the plane of benzene ring 2) The dipole moment of vinyl chlo ...
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1) Which of the following resonating structures of 1- Methoxy -1,3 -butadiene is least stable (a) H2C - - CH=CH - CH =O + - CH3 (b) H2C = CH2 - - CH2 - CH = O + CH3 (c) H2C - - + CH - CH = CH - O - CH3 (d) H2C = CH - - CH - + ...
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'z' is a complex number satisfying za+zb+zc+1=0. Given a,b,c are distinct integers..... Proe |z|=1. From Shastra ...
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1) Which of the following resonating structures of 1- Methoxy -1,3 -butadiene is least stable (a) H2C - - CH=CH - CH =O + - CH3 (b) H2C = CH2 - - CH2 - CH = O + CH3 (c) H2C - - + CH - CH = CH - O - CH3 (d) H2C = CH - - CH - + ...
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'z' is a complex number satisfying za+zb+zc+1=0. Given a,b,c are distinct integers..... Proe |z|=1. From Shastra ...
