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Recent questions tagged q33
Questions
Which alkene when treated with benzene in presence of $H^+$ gives 1,1 diphenylethane
jeemain
chemistry
unit21
organic-chemistry
q33
difficult
basic-organic-chemistry
class11
ch12
asked
Dec 5, 2013
by
sreemathi.v
1
answer
An aquatic plant which has spongy breathing roots is :
jeemain
eamcet
biology
2001
q33
asked
Dec 1, 2013
by
thanvigandhi_1
1
answer
$Ca(OH)_2+Cl_2\rightarrow CaOCl_2+H_2O$.This reaction can be used in
jeemain
chemistry
unit15
p-block-elements
q33
medium
asked
Nov 27, 2013
by
sreemathi.v
1
answer
Dahlia has :
jeemain
eamcet
biology
2000
q33
asked
Nov 25, 2013
by
thanvigandhi_1
0
answers
Which equilibrium can be described as an acid-base reaction using Lewis acid-base definition but not using Bronsted and Lowry concept?
jeemain
aipmt
chemistry
equilibrium
medium
q33
biology
asked
Nov 23, 2013
by
mosymeow_1
1
answer
The following species of Cycas is recorded in the forest of Andhra Pradesh
jeemain
eamcet
biology
1999
q33
asked
Nov 23, 2013
by
thanvigandhi_1
0
answers
Let $M$ and $N$ be two $3\times 3$ non singular skew-symmetric matrices such that $MN=NM$.If PT denotes the transpose of P,then $M^2N^2(M^TN)^{-1}(MN^{-1})^T$ is equal to
jeemain
math
class12
ch3
matrices
q33
symmetric-and-skew-symmetric-matrices
easy
asked
Nov 21, 2013
by
sreemathi.v
1
answer
Let $ABCD$ be a quadrilateral with area 18 with side AB parallel to the side CD and AB=2CD.Let AD be $\perp$ to AB and CD.If a circle is drawn inside the quadrilateral ABCD touching all the sides then its radius is
jeemain
math
class11
ch3
trigonometric-functions
q33
angles
difficult
asked
Nov 19, 2013
by
sreemathi.v
1
answer
Two sides of a triangle are given by the roots of the equation $x^2-5x+6=0$ and the angle between the sides is $\large\frac{\pi}{3}$. Then the perimeter of the triangle is :
jeemain
eamcet
math
2005
q33
asked
Nov 12, 2013
by
meena.p
2
answers
Eight molecules of an enzyme solution is mixed with 1000 molecules of the substrate in a reaction mixture. If it converts 80% of the substrate into product in five minutes, then its turnover number is :
jeemain
eamcet
biology
2010
q33
asked
Nov 11, 2013
by
thanvigandhi_1
0
answers
The pH of a solution of $H_2O_2$ is $6.0$. some chlorine gas is bubbled into this solution. Which of the following is correct ?
jeemain
eamcet
chemistry
2005
q33
asked
Nov 11, 2013
by
meena.p
0
answers
For any vector $\overrightarrow a$ the value of $(\overrightarrow a\times \hat i)^2+(\overrightarrow a\times \hat j)^2+(\overrightarrow a\times \hat i)^2=?$
jeemain
math
class12
ch10
vector-algebra
medium
vector-product
q33
asked
Nov 10, 2013
by
rvidyagovindarajan_1
1
answer
Consider the following statements A and B and identify the correct answers given below: A: Peltier coefficient is numerically equal to the potential difference across the junctions of the thermonuclear through which current is flowing. B:According to Thomson, energy is neither absorbed nor evelved at the junction of a thermocouple but is observed or evolved only along the lengths of both the conductors.
jeemain
eamcet
physics
2005
q33
asked
Nov 8, 2013
by
meena.p
1
answer
The elevation of an object on a hill is observed from a certain point in the horizontal plane through its base, to be $30^{\circ}$. After walking 120 metres towards it on level ground the elevation is found to be $60^{\circ}$. Then the height of the object (in meters) is :
jeemain
eamcet
math
2006
q33
asked
Nov 6, 2013
by
meena.p
1
answer
Assertion (A) : A current of 96.5 A is passed into aqueous $AgNO_3$ solution for 100 s. The weight of silver deposited is $10.8\;g$ (At . wt. of Ag=108). Reason (R): The mass of a substance deposited during the electrolysis of an electrolyte is inversely proportional to the quantity of electricity passing through the electrolyte.
jeemain
eamcet
chemistry
2006
q33
asked
Oct 30, 2013
by
meena.p
1
answer
If the cold junction is held at $0^{\circ}$, the same thermo emf V of a thermocouple varies as $V= 10 \times 10^{-6} t -\large\frac{1}{40} \times 10^{-6}t^2$, Where t is the temperature of the hot junction in $^{\circ}C$. The neutral temperature and the maximum value of thermo emf are respectively:
jeemain
eamcet
physics
2006
q33
asked
Oct 29, 2013
by
meena.p
1
answer
Identify the correct pair of statements :
jeemain
eamcet
biology
2011
q33
asked
Oct 27, 2013
by
thanvigandhi_1
1
answer
In $\Delta ABC,$ with usual notation. Observe the two statements given below:(I) $rr_1r_2r_3=\Delta ^2$ (II) $r_1r_2+r_2r_3+r_3r_1=s^2$ Which of the following is correct ?
jeemain
eamcet
math
2007
q33
asked
Oct 25, 2013
by
meena.p
1
answer
Weight of oxygen in $Fe_2O_3$ and FeO in the simple ratio for the same amount of Fe is
jeemain
chemistry
physical-chemistry
class11
unit1
some-basic-concepts-in-chemistry
laws-of-chemical-combinations
q33
medium
asked
Oct 24, 2013
by
sreemathi.v
1
answer
An organic compound 'X' on treatment with pyridinium chloro chromate in dichloromethane gives compound 'y'. Compound 'y', reacts with $l_2$ and alkali to form triiodomethane. The compound 'X' is
jeemain
eamcet
chemistry
2007
q33
asked
Oct 24, 2013
by
meena.p
1
answer
Temperature of cold junction in a thermo couple is $10^{\circ}$ and neutral temperature is $270^{\circ}$, then the temperature of inversion is
jeemain
eamcet
physics
2007
q33
asked
Oct 23, 2013
by
meena.p
1
answer
In a triangle , if $r_1=2 r_2=3 r_3$, then $\large\frac{a}{b}+\frac{b}{c}+\frac{c}{a}$$=$
jeemain
eamcet
math
2008
q33
asked
Oct 17, 2013
by
meena.p
1
answer
Study the following lists
jeemain
eamcet
biology
2012
q33
asked
Oct 16, 2013
by
thanvigandhi_1
1
answer
The value of $\sin 36^{\large\circ}\sin 72^{\large\circ}\sin 108^{\large\circ}\sin 144^{\large\circ}$ is equal to
jeemain
math
class11
ch3
trigonometric-functions
q33
trignometric-identities
medium
asked
Oct 16, 2013
by
sreemathi.v
1
answer
If $\overrightarrow {a}=-\overrightarrow {i}+\overrightarrow {j}+2\overrightarrow {k} , \overrightarrow {b}=2\overrightarrow {i}-\overrightarrow {j}-\overrightarrow {k}$ and $\overrightarrow {c}=-2 \overrightarrow {i}+\overrightarrow {j}+3 \overrightarrow {k},$ then the angle between $2 \overrightarrow {a}-\overrightarrow {c}$ and $\overrightarrow {a}+\overrightarrow {b}$ is :
jeemain
eamcet
math
2009
q33
asked
Oct 9, 2013
by
meena.p
1
answer
If $A$ lies in the third quadrant and $3 \tan A-4=0$ then $5\sin 2A+3\sin A+4\cos A$ is equal to
jeemain
math
class11
ch3
trigonometric-functions
q33
trignometric-functions
easy
asked
Oct 8, 2013
by
sreemathi.v
1
answer
What is the total number of amino acids when the capsid of TMV contains 2130 capsomers?
jeemain
eamcet
biology
2013
q33
asked
Oct 4, 2013
by
thanvigandhi_1
1
answer
A rubber balloon has $200\;g$ water in it . It's weight in water will be (neglecting the weight of balloon)
jeemain
physics
class11
unit7
properties-of-solids-and-fluids
q33
easy
asked
Oct 4, 2013
by
meena.p
1
answer
$\bigg[ \overrightarrow {a}+ 2 \overrightarrow {b}- \overrightarrow {c}\bigg].\bigg[\overrightarrow {a}- \overrightarrow {b}\bigg] \times \bigg[\overrightarrow {a}-\overrightarrow {b}-\overrightarrow {c}\bigg]=$
jeemain
eamcet
math
2010
q33
asked
Sep 26, 2013
by
meena.p
1
answer
$A(\alpha, \beta)=\begin {bmatrix} \cos \alpha & \sin \alpha & 0 \\ -\sin \alpha & \cos \alpha & 0 \\ 0 & 0 & e^{\beta} \end{bmatrix} => [A(\alpha, \beta)]^{-1}=$
jeemain
eamcet
math
2011
q33
asked
Sep 20, 2013
by
meena.p
1
answer
$\overrightarrow {a} \neq \overrightarrow {0},\;\overrightarrow {b} \neq \overrightarrow {0},\;\overrightarrow {c} \neq \overrightarrow {0},\;\overrightarrow {a} \times \overrightarrow {b} = \overrightarrow {0},\;\overrightarrow {b} \times \overrightarrow {c}=0\;=>\; \overrightarrow {a} \times \overrightarrow {c}=$
jeemain
eamcet
math
2013
q33
asked
Sep 16, 2013
by
meena.p
1
answer
The maximum number of electron that can be accommodated in all the orbitals for which $l=3$, is .............. .
jeemain
eamcet
chemistry
1991
fitb
q33
asked
Sep 12, 2013
by
meena.p
0
answers
In a double star, two stars of masses $m_1$ and $m_2$ distant r apart revolve about their common center of mass under their mutual gravitational attraction. Find the ratio of their kinetic energies $K_1 :K_2$
jeemain
physics
class11
unit6
gravitation
q33
difficult
asked
Aug 20, 2013
by
meena.p
0
answers
A Block of mass 'm' are kept on a smooth horizontal plane, and attached to two unstretched spring with spring constants $k_1$ and $k_2$ as shown. If the block be displaced by a distance x on either side and released then the velocity of block as it passes through the mean position is
jeemain
physics
class11
unit4
work-power-energy
q33
medium
asked
Jul 19, 2013
by
meena.p
1
answer
A ball is moving with velocity v strikes a wall moving towards the ball with velociy u. An elastic impact lasts for t seconds. Find the mean elastic force acting on the ball
jeemain
physics
class11
unit3
laws-of-motion
q33
easy
asked
Jul 9, 2013
by
meena.p
1
answer
The dimensions of $RC$ is same as that of
jeemain
physics
class11
ch2
units-and-measurement
q33
easy
dimensional-formulae-and-analysis
asked
Jun 18, 2013
by
meena.p
1
answer
If$f(a)=2;f '(a)=1;(g)=(a)=-1;g '(a)=2$ then the value of $\;\lim \limits_{x \to 2}\Large\frac{g(x)f(a)-g(a)f(x)}{x-a}$ is
tnstate
class12
bookproblem
p232
objective
q33
modelpaper
jun-2008
asked
May 18, 2013
by
poojasapani_1
1
answer
If $\overrightarrow{a} \times(\overrightarrow{b}\times\overrightarrow{c})=(\overrightarrow{a}\times\overrightarrow{b})\times \overrightarrow{c}$ for non-coplanar vectors $\overrightarrow{a},\overrightarrow{b},\overrightarrow{c}$ then
tnstate
class12
bookproblem
p267
objective
q33
modelpaper
mar-2009
asked
May 10, 2013
by
poojasapani_1
1
answer
Find the probability that sum of nos. appearing and showing on two dice is 8, given that atleast one of the dice doesn't show 5.
cbse
class12
additionalproblem
kvquestionbank2012
ch13
q33
p42
math
asked
Feb 5, 2013
by
meena.p
0
answers
Evaluate: \[\int \frac{e^{2logx}-1}{e^{2logx}+1}dx\]
cbse
class12
additionalproblem
kvquestionbank2012
ch7
q33
p26
math
asked
Feb 2, 2013
by
meena.p
0
answers
Find the equation of tangent to the curve $\sqrt x+\sqrt y=\sqrt a $ at the point $(x_1,y_1)$ and show that the sum of its intercepts on the axes is constant.
cbse
class12
additionalproblem
kvquestionbank2012
ch6
q33
p18
math
asked
Jan 29, 2013
by
meena.p
0
answers
Let $y= \tan^{-1}\bigg[\Large\frac{4x}{1+5x^2}\bigg] \normalsize +\tan^{-1}\bigg[\Large\frac{2+3x}{3-2x}\bigg],$ show that $ \Large\frac{dy}{dy}=\frac{5}{1+25x^2}$
cbse
class12
additionalproblem
kvquestionbank2012
ch5
q33
p13
medium
math
sec-a
asked
Jan 25, 2013
by
meena.p
1
answer
If $ A=\begin{bmatrix} 1 & -2 & 1 \\ -2 & 3 & 1 \\ 1 & 1 & 5 \end{bmatrix}$ verify $(AdjA)^{-1}=adj(A^{-1})$
cbse
class12
additionalproblem
kvquestionbank2012
ch3
q33
p9
math
sec-b
asked
Jan 24, 2013
by
meena.p
0
answers
Solve: $x\large \frac{dy}{dx}$$ =y(\log y-\log x+1)$
cbse
class12
ch9
sec-a
q33
p195
exemplar
medium
math
asked
Jan 18, 2013
by
sreemathi.v
1
answer
The number of vectors of unit length perpendicular to the vectors $\overrightarrow{a}=2\hat i+\hat j+2\hat k$ and $\overrightarrow{b}=\hat j+\hat k$ is
cbse
class12
ch10
q33
p218
exemplar
easy
sec-a
math
asked
Jan 17, 2013
by
sreemathi.v
1
answer
The area of the region bounded by the curve $y=x+1$ and the lines $x=2$ and $x=3$ is \[(A)\frac{7}{2} sq.units\quad(B)\;\frac{9}{2}sq. units\quad(C)\frac{11} {2}sq.units\quad(D)\frac{13}{2} sq.units\]
cbse
class12
ch8
q33
p178
objective
exemplar
sec-b
easy
math
asked
Jan 16, 2013
by
sreemathi.v
1
answer
Evaluate the following: $\int\limits_0^\pi x\sin x\cos^2xdx$
cbse
class12
ch7
q33
p165
exemplar
sec-c
medium
math
asked
Jan 14, 2013
by
sreemathi.v
1
answer
A metal box with a square base and vertical sides is to contain 1024$cm^3$.The material for the top and bottom costs Rs 5/$cm^2$ and the material for the sides costs Rs2.50/$cm^2$.Find the least cost of the box.
cbse
class12
ch6
q33
p138
exemplar
math
sec-c
asked
Jan 11, 2013
by
sreemathi.v
0
answers
Suppose that 6% of the people with blood group O are left handed and 10% of those with other blood groups are left handed 30% of the people have blood group O.If a left handed person is selected at random,what is the probability that he/she will have blood group O?
cbse
class12
ch13
q33
p275
short-answer
exemplar
sec-a
easy
math
asked
Jan 9, 2013
by
sreemathi.v
1
answer
Corner points of the feasible region for an LPP are (0,2)(3,0),(6,0),(6,8) and (0,5).Let $F=4x+6y$ be the objective function,Maximum of F - Minimum of F =
cbse
class12
ch12
q33
p256
objective
exemplar
sec-a
easy
math
asked
Jan 8, 2013
by
sreemathi.v
1
answer
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