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CH3OH → CH3COOH The above reaction proceeds in presence of.. (a) K2Cr2O7 (b)CH2N2 (c)CO2/BF3 (d) None ...
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Suppose a,b,c are positive integers and f(x) = ax2-bx+c =0 has two distinct roots in (0,1) m then (a) a≥5 (b) b≥5 (c) abc≥25 (d) abc≥5 2 ...
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Let α be a repeated root of p(x) = X3+ 3ax2 +3bx+c =0 , then (a) α is a root of x2+2ax+b=0 (b) α =(c-ab)/2(a2-b) (c) α=(ab-c)/(a2 -b) (d) α is a root of ax2+2bx+c =0 ...
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Let a,b,c,d be four integers such that ad is odd and bc is even,then ax3+bx2+cx+d = 0 has (a) at least one irrational roots (b) all three rational roots (c) all three integral roots (d) none of these ...
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Let a,b,p,q ε Q and suppose that f(x) = x2 +ax+b=0 and g(x)= x3 + px + q = 0 have a common irrational root , then (a) f(x) divides g(x) (b) g(x) ≡ x f(x) (c) g(x) ≡ (x-b-q)f(x) (d) none ...
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CH3OH → CH3COOH The above reaction proceeds in presence of.. (a) K2Cr2O7 (b)CH2N2 (c)CO2/BF3 (d) None ...
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CH3OH → CH3COOH The above reaction proceeds in presence of.. (a) K2Cr2O7 (b)CH2N2 (c)CO2/BF3 (d) None ...
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A collar of negligible size slides over the surface of horizontal circular rod for which coefficient of friction is 0.3.The collar is projected with a speed of 4 m/s and the radius of the ring is 10 cm.Find the distance moved ...
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Its nothing ...
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Why the yield of chlorobenzene is generally poor, When phenol is treated with PCl5 ??? ...
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Why the yield of chlorobenzene is generally poor, When phenol is treated with PCl5 ??? ...
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Why the yield of chlorobenzene is generally poor, When phenol is treated with PCl5 ??? ...
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please remove this new look.... i think this has resulted in loss of users from targetIIT.... some demerits i feel are... 1. we can't see recent posts... 2. neither an option for latex 3. looks so bad.. 4. a bit complex to us ...
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What will be the minimum percentage for the students of WB board to be eligible for JEE 2013? ...
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Resonance occurs in a series LCR ckt when the frequency of the applied emf is 1000 Hz.Then (a)when frequency=900 Hz, then the current through the voltage source will be ahead of emf of the source. (b)the impedence of the circ ...
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The figure shows a ray incident at an angle i=π/3 . The ray is refracted and angle of refraction is r. The value of r changes between 0 to π/2when the ratio μ1/μ2 = k is changed. If the plot drawn shows the variation of | ...
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A vertical pencil of rays comes from the bottom of a tank filled with a liquid.When it is accelerated with an acceleration of 7.5 m/s2 , the ray is seen to be totally reflected by liquid surface.What is the minimum possible r ...
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Resonance occurs in a series LCR ckt when the frequency of the applied emf is 1000 Hz.Then (a)when frequency=900 Hz, then the current through the voltage source will be ahead of emf of the source. (b)the impedence of the circ ...
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In a series LCR circuit the frequency of the source is half of the resonance frequency. Then how can I comment about the nature of the circuit,,,like whether it is capacative or inductive or purely resistive?? ...
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In the figure shown a light container is kept in a horizontal rough surface of coefficient of friction μ= sh/v .A very small hole of area s is made at a depth h.Water of volume v is filled in the container.The friction is no ...
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A man weighing 60kg stands on an immobile platform ( a disc) with a mass of 100 kg.What are the no. of revolutions per minute made by the platform if the man moves along a circle with a radius of 5 mts. around the axis of rot ...
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A closed loop of cross sectional area 10-2 m2 which has inductance L= 10 mH and negligible resistance is placed in a time varying magnetic field.The figure shows the variation of B with time for the interval 4 sec.The field i ...
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can i join only chemistry from edudigm? ...
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\hspace{-16}$4 balls are to be selected from a group of 11 bolls. 5 of them are of type A,\\\\ 2 of them are type B, 2 are of type R, one of type K and one of type D.\\\\ Q.In how many ways we can arrange 4 balls out of these ...
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The x and y co-ordinate of the moving body are x=3t2and y=5t2 (A)velocity of the body is making angle tan-1 5/3 with +ve x-axis (B)the angle between velocity and acceleration is 0o (C)the path followed by the body is a straig ...
