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A solutution containing Na2CO3 and NaHCO3 are titrated using 0.2M HCl solution using methyl orange indicator.At equivalence point,
1)both Na2CO3 and NaHCO3 are completely neutralized.
2)only Na2CO3 is completely neutralized.
3)only NaHCO3 is wholly neutralized.
4)
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KClO3 on heating decomposes to KCl and O2 .what is the volume of oxygen at STP liberated by thermal decomposition of 0.1 mole of KClO3
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how many EDTA molecules are required to make an octahedral complex with Ca2+
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A solid mixture containing 3.32 gm of Pb(NO3)2 and 1.68 gm of NaNO3 . then the loss of mass after gentle heating will be-
18% , 28%, 38%, 48%
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0.9031 gram of a mixture of NaCl and KCl on treatment with H2SO4 yielded 1.0784 grams of a mixture of Na2SO4 and K2SO4 .what is the percentage of KCl in the mixture?
1. 54% 2. 43% 3. 59% 4. 48%
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the vapour density of a mixture containing NO2 and N2O4 is 38.4 at 27 degree celcius. the moles of NO2 in 100 gram mixture are-
1) 0.53 2) 0.44 3) 0.39 4) 0.28
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in sequence of(4n+1) terms the first (2n+1) terms are in AP whose common difference is 2 , the last 2n+1 terms are in GP whose common ratio is 0.5. if the middle terms of the AP and GP are equal then the middle term of the sequence is?
1) n.22n+1/ 2.2n -1
2) n.2n+1/ 22n-1
3) n2n
4) none
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THE COEFFICIENT OF X203 IN THE EXPANSION (X-1)(X2-2)(X3-3).......(X20-20) IS-
1. -35
2. 21
3. 13
4. 15
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the 1025th term in the sequence
1, 22, 4444,88888888,.........is
1) 29 2)210 3)211 4) 212
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21(x2+y2+z2)=(x+2y+4z)2 then x y z are in?
A.P, G.P .H.P???
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LET L BE THE LINE PASSING THROUGH (0,1,0)AND PERPENDICULAR TO THE PLANE X+2Y+2Z=0.THEN THE DISTANCE FROM THE POINT (0,0,0)TO THE LINE L IS?
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K
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Q A POINT (p,q,r) ;LIES IN THE PLANE X+Y+Z=2.THE VALUE OF "r" SUCH THAT THE VECTOR a=pi+qj+rk SATISFIES K*(K*a)?
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Q CONSTANT CURRENT "I" IN THE RING ?WHY TIME INDEPENDENT ELECTROSTATIC FIELD OUT OF SYSTEM IS NOT THERE?
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THE WORK DONE BY THE VOLTAGE SOUCE WILL BE HALF OF THE HEAT DISSIPATED WHEN THE CAPACITOR IS FULLY CHARGED?WHAT IS WRONG IN THIS STATEMENT.
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Q1)
Single Option Correct Questions:
The displacement -time graph of moving particle with constant acceleration is shown in the figure. The velocity -time graph is given by-
1)
2)
3)
4)
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Q THE LINE WHICH CONTAINS ALL POINTS (X,Y,Z) WHICH ARE OF THE FORM (x,y.z)=(2,-2,5)+k(1,-3,2) intersect the plane 2x-3y+4z=163 at P and intersect the yz plane at q.find the distance PQ
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Q THE VALUE OF m FOR WHICH THE ST.LINE 3x-2y+z+3=0=4x-3y+4z+1 is parell to the plane 2x-y+mz-2=0 is?
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why is electric force is greater than gravitational force?
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hey my name is vikas choudhary .i appeared in jee2010 but did not qualify in it .iget 84 marks in it .i am a sc.so in 2010 i get coaching and again is going to apear in JEE2011.now i am confident of getting 150 marks in it .my weak topics is mainly maths .in it i only cover COORDINATE AND VECTOR 3D VERY GOOD .I WANTED TO KNOW ON WHICH TOPICS ISHOULD DO SO THAT I SOLVE JEE QUESTION .PLEASE TELL THE TOPICS ON ALL SUBJECTS SO THAT ICAN GEAR MY STUDY VERY WELL.
