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2-methylbutane can be prepared by ...
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points (1,-1), (-1,1), (2,2), (-2,-2) are vertices of a ...
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Which of the following statements about an sp hybridized carbon is FALSE ...
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Which of the following have only one type of hybrid C ...
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In the catalytic oxidation of ammonia an oxide is formed which is used in the preparation of HNO3. This oxide is ...
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10th term of an AP is 27, 30th is 71, find teh 20th ...
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the 3 coordinates of a parallelogram are (-2,-1), (2,-1), (2,1), find fourth ...
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In ΔABC the median AD is perpendicular to AC. If b=5 and c=11 then a is equal to ...
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find the shortest distance between the lines [rv]=3[ic]+5[jc]-2[kc]+λ(4[ic]-3[jc]+[kc]) [rv]=2[ic]+7[jc]-[kc]+μ(3[ic]-[jc]+4[kc]) ...
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Evaluate: 12 -22 +32 -42 + ...... +992 -1002 ...
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The lowering of vapour pressure of the solvent takes place ...
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Maximum bond angle is present is ...
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A uniform rope of mass m and length l is applied a force F on one end. The other end is fixed to a wall. What is the tension in the rope at a distance x from one end of the point of application of the force? (Assume unifo ...
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10 ml of acetone is mixed with 100 ml water. The vapour pressure of water above the solution is ...
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A system of binary stars of masses ma &mbare moving in circular orbits of radii ra and rbresp..If Ta and Tbare time periods of masses respectively then ...
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An infinitely long conductor PQR is bent to form a right angle as shown in figure. A current I flows through PQR. The magnetic field due to current at the point M is H1. Now, another infinitely long straight conductor QS is c ...
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Find dy/dx at x=0, y=(2x+3)/(3x+4) ...
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lim(n→∞) (Σi3)/n3 (where summation is from 1 to n) ...
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find the eqn. of the ellipse whose vertices are (5,4) & (3,4) and eccentricity is 1/2 ...
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AM an dGM between 2 numbers is 34, 16 respectively. The two numbers are... ...
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The sum of the protons and neutrons in an atom is its ...
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hello i've given the the test:178 on qtn 8 i saw the answer is c but if the forward reaction is endothermic( as given in the qtn. ΔH=-90 kj) then high tempo. is favourable for reaction. but answer is (c) low temp. WHYYYY???? ...
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a is chosen as a random natural number. what is the probability that (x-1)(x-10)(x-a) has no repeated roots? ...
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Six dice are thrown 729 times. How many times do you expect atleast three dice to show 5 or 6..... ...
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A uniform electric field pointing in positive x-direction exists in a region. Let A be the origin, B be the point on the x-axis at x=+1 cm and C be the point on the y-axis at y=+1 cm. Then the potentials at A,B and C ...
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Maximize (x-3)2+(y-2)2 given that (x+3)2+(y+2)2 = 4 ...
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If p,q,r are in GP, a,b,c are in AP, then ap, bq and cr are in ...
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cos2A+cos2B+cos2C+2cosAcosBcosC where ABC is a triangle ...
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A football of mass m approaches at 10m/s and is kicked by the footballer such that it returns at 10√2 at an angle of 45 degrees from its initial direction! What is the magnitude of the impulse? ...
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The total energy of the electron in an atom is ...