1 Days 2435/73·Update your Address!:Please update your Address on your profile. here: http://targetiit.com/edit.html
We intend to send a bimonthly (Something like a Mathematics today but 3 subjects together!) sometime next month free ..
87 Days 9916/307·Bashing this site!:You can put down all your complaints.. errors on tests and anything that u dont like about this site.. on this thread.
I will try to make it sticky so that it is always in the home page view!
Or m..
149 Days 193/2·shortest chord...........:The shortest normal chord of the parabola y2 = 4ax is
a) [sqrt]3[/sqrt]a
(b) 2 [sqrt]3[/sqrt] a
(c) 3 [sqrt]3[/sqrt] a
(d) 6[sqrt] 3[/sqrt] a
151 Days 99/3·Test:42 QNo:10:find dy/dx at x=0, y=(x-1)/(x3+x2+x+1)
160 Days 143/4·iit jee 2000:If the circles x2+y2+2x+2ky+6=0 and x2+y2+2ky+k=0 intersect orthogonally , then k is
a)2 or -3/2
b)-2 or -3/2
c)2 or 3/2
d) -2 or 3/2
.........what is meant by "circles intersect orth..
160 Days 83/2·parallel plates............:[image]42057328.jpg[/image]
correct ans are a,c,d.
If i ignore the plate Y , the i m getting the answers. I want to know what is the effect of Y.
160 Days 204/11·metal ring...........:A metal ring of mass m and radius R is placed on a smooth horizontal table and is set rotating about its own axis in such a way that each part of the ring moves with a speed v. Find the tension in the..
160 Days 169/6·GP:FIND THE SUM TO N TERMS OF THE FOLLOWING SERIES 3+7+14+27+52+...
160 Days 208/14·another doubt............:A block of mass m and a pan of equal mass are connected by a string going over a smooth light pulley. Initially the system is at rest when a particle of mass m falls on the pan and sticks to it. If th..
161 Days 150/10·surface............:1. Among the following, the surfactant that will form micelles in aq. solution at the lowest molar concentration and ambient conditions is
a) CH3[/ss](CH2[/ss])15[/ss]N+(CH3[/ss])3[/ss]Br-
b) CH..
162 Days 53/1·equipotentials.............:[image]42057471.jpg[/image]
correct ans are a,c,d......
Plz giv the explanation for option c.
163 Days 119/8·uniform ladder.........:A uniform ladder of mass 10 kg leans against a smooth vertical wall making an angle of 53° with it. The other end rests on a rough horizontal floor. Find the normal force and the frictional force tha..
164 Days 259/20·nstse 76:[image]40499936.jpg[/image]
165 Days 44/1·IIT JEE STEREOISOMERS......:The correct statement(s) about the compound H3C(HO)HC–CH=CH–CH(OH)CH3 (X) is(are)
(A) The total number of stereoisomers possible for X is 6.
(B) The total number of diastereomers possible for ..
167 Days 164/6·nice one:A gas of temperature T is enclosed in a contained whose walls are (initially) at temperature T1. Does the gas exert a higher pressure on the walls of the container when T1T?
168 Days 188/2·triangle..............:In a triangle ABC, cos2A+cos2B+cos2C=1. Then the triangle is
a)right angled
b) obtuse angled
c)acute angled
d)equilateral
168 Days 108/2·iit 2002..............:[image]41405818.jpg[/image]
correct ans b
Post the solution.....
168 Days 70/4·. If an electrolytic solu..: If an electrolytic solution is diluted to 9 times then its conductance
a) Inc. 9 times b) Dec. 9 times c) Remains same d) none
168 Days 46/2·Solve:1. A substance A decomposes by first order reaction starting initially with = 2.00 M, after 200mins
= 0.250 M. For this reactioin what is I + 1/2 II K?
2. Calculate the equilibrium const..
169 Days 145/9·pot diff:A solid conducting sphere having a charge Q is surrounded by an uncharged concentric conducting hollow spherical shell. The potential difference between the surface of the solid sphere and the outer s..
169 Days 82/0·aghpppppppppppp............:If cos4θ.sec2α, 1/2 and sin4θ.cosec2α are in AP, then cosec8θsec6α , 1/2, sin8θ.cosec6α are in
a)AP
b)GP
c)HP
d)none
ans a)
169 Days 89/3·AHGP quadra................:[image]41405529.jpg[/image]
ans is b,c
post the solution also.........
169 Days 293/19·WBJEE............:The 99th term of the series 2+7+14+23+34+....... is
a)9999
b)9998
c)10000
d)none
170 Days 91/2·maximum value..........:If A>0 , B>0 and A+B=∩/3 , then the maximum value of tan A tan B is
a) 1/6
b)1/3
c)1/2
d)1
ans b)
.............solve it
170 Days 64/1·set of values..............:The set of values possible of θ in [-Π,Π], such that [frac][sqrt]1-sin θ[/sqrt][sqrt]1+sin θ[/sqrt][/frac] is equal to sec θ- tan θ is
a)[0,Π/2]
b)[0,Π/2)υ(Π/2,Π]
c)[-Π,0]
d)(..
172 Days 70/3·test question:Which of the following statements about an sp hybridized carbon is FALSE
a) It is divalent
b) It forms bonds that are linear
c) It has two p orbitals
d) It always forms triple bonds to carbon
..
174 Days 67/2·trigo quadratic:It is given that tan A and tan B are the roots of t2-pt+q=0. Find in terms of p and q:
i) sin2(A+B)
ii)cos 2(A+B)
174 Days 102/3·quadratics:1.
If a,b are the roots of x2=x+1 , prove that a5=5a+3
2.
Two candidates attempt to solve a quadratic eqn of the form x2+px+q=0 . One starts with a wrong value of p and finds the r..
174 Days 86/0·kinetic theory.............:1 metre long tube, closed at both ends, is lying horizontally. A mercury column of length 0.1 m is filled in its middle and in the rest two parts air is filled at atmospheric pressure. What will be th..
175 Days 60/2·Test:39 QNo:10:find dy/dx where y=tan-1(2x/(1-x2))
175 Days 94/2·quadratic solve ........:Solve
1. 4x -3x-[frac]12[/frac] = 3x+[frac]12[/frac] - 22x-1
2. 2x2 : 2x =8:1
ans1 is x=1+-[sqrt]13[/sqrt] /2
ans 2 is x=3/2
175 Days 52/1·Test:42 QNo:4:find dy/dx, y=(x-2)/[(x-1)(x+2)]
175 Days 112/6·Test:42 QNo:2:find dy/dx at x=2, y=x2/(1+x2)
177 Days 312/21·revising GOC:1.)order of heat of hydrogenation: a)1-hexene
b)2-hexene c)3-hexene d)1-cyclo-hexene 2.)order in which they wil ract with H+:
[image]40690735.jpg[/image]
179 Days 82/3·nstse 73:1 . [image]40500122.jpg[/image]
2. What is the product obtained on treating ethyl chloride with dry Ag2[/ss]O ?
180 Days 139/4·integrate5:[image]40010182.jpg[/image]
180 Days 59/2·nstse 88:[image]40499234.jpg[/image]
180 Days 60/4·decibel............:An organ produces a G note with an intensity of 10-6 W/m2. What is the
sound level of this G note?
a. 6 dB
b. 18 dB
c. 60 dB
d. 120 dB
ans (c)
180 Days 49/1·nstse 85:[image]40499660.jpg[/image] Is the ans a or d
180 Days 37/1·nstse 65:A potential diff. of 2 V is applied to a coil of resistance 2 ohm and inductance 2 H. What is the current after 1 second?
a) 0.732 A
b)0.632 A
c)0.932 A
d)0.693 A
180 Days 31/1·nstse 86:[image]40499618.jpg[/image]
181 Days 66/3·Test:199 QNo:3:The cleaning action of soap is due to
181 Days 35/1·Test:199 QNo:4:The micelles having head at centre and tails extended out are
182 Days 164/7·shm...............:A body executes simple harmonic motion under the action of a force F1[/ss]
with a time period 4/5s. If the force is changed to F2[/ss] it executes S.H.M with time period 3/5 s. If both the forces F1[..
182 Days 109/3·test:[image]40169789.jpg[/image]
a. 6 kg
b. 4 kg
c. 8 kg
d. 10 kg
ans is c
182 Days 313/1·recoil velocity............:When a hydrogen atom emits a photon during the transition n = 5 to n = 1, its recoil speed is approximately
(a) 4 m/s
(b) 800 m/s
(c) 3 mm/s
(d) 0.1 mm/s
183 Days 116/5·integrate4:[image]40010156.jpg[/image]
183 Days 155/11·solve ............:In a college of 300 students, every student reads 5 newspapers and every newspaper is read by 60 students. The number of newspapers is :
a. At least 30
b. At most 20
c. Exactly 25
d. None of t..
183 Days 89/4·substitution........:[image]40171629.jpg[/image]
ans is give d.
Plz tell me how the OH has been replaced ...... although double bond character is there ?
183 Days 118/5·limits:1.
lim x->0 [frac][crt](1+sin x)[/crt] - [crt](1- sin x)[/crt]x[/frac]
2. lim x->0 [frac]xcos x -sin xx2sin x[/frac]
183 Days 55/2·periodic:1.
Is cos x2 a periodic function ?
2. Find the fundamental period of the function 2cos [frac]x-π3[/frac]
183 Days 108/3·quadratic..................:The integral values of a for which the quadratic equation (x – a)(x – 10) + 1 = 0 has integral roots are
a. -1, 3
b. 2, 3
c. 12, 8
d. -8, -12
183 Days 109/2·BOARDS.......:If the wavelength of incident light on
a)concave mirror and b) convex lens
is increased, how will the focal length of each of these change.Give reason.
183 Days 58/1·find domain: Find the domain of the function:
f(x)= [sqrt]cos (sin x)[/sqrt] + sin-1[frac]1+x22x[/frac]
185 Days 174/4·integrate 2:∫ [frac]x2(xsin x+ cos x)2[/frac]dx
185 Days 148/3·trick:[image]39751194.jpg[/image]
This question can be solved by using AM>=GM.
i JUST WANT TO KNOW THAT IN WHICH TYPE OF QUESTIONS SHOULD WE USE THIS CONCEPT?
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