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The angle between pair of tangents drawn to the curve 7x2- – 12y2 = 84 from M(1, 2) is a) 2tan-1 1/2 b) 2tan-12 c) 2(tan-11/3 + tan-1 1/2) d) 2tan-1 3 ...
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1. Statement-1: In diamond carbon atoms occupy alternate tetrahedral voids in the FCC lattice formed by the carbon atoms Statement-2: In diamond, packing fraction ismore than 74%. 2. Which of the following properties of theme ...
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The electrolysis of cold sodium chloride solution produces NaOH and Cl2. The Cl2 produced, the disproportionates into NaOH solution to give sodiumhypochlorite (NaClO) and sodiumchloride.How longwill a cell operate to produce ...
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Xenon is in sp3 hybridisation in 1. XeO4 2. XeF4 3. XeO3 4. XeO2 a) 2,4 b) 1,2 c) 1,2,3 d) 2 ...
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Over a certain region of space , the electric potential is V= 5x-3x^2y+2yz^2 the amgnitude of electric field at origin is (in N/C) a) 3 b) 5 c) 2 d) 18 ...
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A particle 'A' of amss 2m collides elastically with another particle of mass 3m at rest, and as a result 'A' is turned by 90 degree. The fraction of the kinetic energy that 'A' looses as a result of the collision is a) zero b ...
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A variable st. line is drawn thru the point A(10,-8) to intersect the curve x^2-xy+y^2+4x-5y-2=0 at the points B and C. A point P is on the chord BC such that AB, AP,AC are in HP., then P moves on a) a line b) a circle C) a p ...
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If (4k1,k1^2,1) and (4k2,k2^2,1) are two points lying on the plane in which 1,2,1 are mirror image to each other then k1k2 equals a) -3/2 b) -5/2 c) -7/2 d) -9/2 ...
