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Recent questions tagged q24
Questions
What is the strength in g per litre of a solution $H_2SO_4$,12ml of which neutralized 15ml of W/10 of NaOH solution?
jeemain
chemistry
physical-chemistry
class11
unit1
some-basic-concepts-in-chemistry
stoichiometry
q24
easy
asked
Oct 31, 2013
by
sreemathi.v
1
answer
Which of the following is not correct ?
jeemain
eamcet
chemistry
2006
q24
asked
Oct 30, 2013
by
meena.p
1
answer
Dispersive power depends on the following :
jeemain
eamcet
physics
2006
q24
asked
Oct 29, 2013
by
meena.p
1
answer
Two filaments of spirogyra aplanospora are observed. One of the filaments has 150 cells another contains 225 cells. If all the cells in both the filaments are involved in asexual reproduction, what is the ratio of new filaments developed from them?
jeemain
eamcet
biology
2011
q24
asked
Oct 26, 2013
by
thanvigandhi_1
1
answer
If $\theta$ lies in the first quadrant and $5\;\tan \theta=4$, then $\large\frac{5 \sin \theta -3 \cos \theta}{\sin \theta+ 2 \cos \theta}$ is equal to
jeemain
eamcet
math
2007
q24
asked
Oct 24, 2013
by
meena.p
1
answer
A compound contains 34.8% Oxygen,52.2% Carbon and 13.0% hydrogen .What is the empirical formula mass of the compound ?
jeemain
chemistry
physical-chemistry
class11
unit1
some-basic-concepts-in-chemistry
percentage-composition
q24
medium
asked
Oct 24, 2013
by
sreemathi.v
1
answer
Which one of the following salts give an acidic solution in water?
jeemain
eamcet
chemistry
2007
q24
asked
Oct 23, 2013
by
meena.p
1
answer
The refractive index of the material of a double convex lens is 1.5 and its focal length is $5\;cm$. If the ratii of curvature are equal , the value of the radius of curvature (in cm) is
jeemain
eamcet
physics
2007
q24
asked
Oct 22, 2013
by
meena.p
1
answer
Find all possible values of $p$ and $q$ for which $\cos^{-1}\sqrt p+\cos^{-1}\sqrt{1-p}=\large\frac{3\pi}{4}$
jeemain
math
class12
ch2
inverse-trigonometric-functions
q24
inverse-trignometric-properties
difficult
asked
Oct 21, 2013
by
sreemathi.v
1
answer
$\sqrt 2 - cosec20^{\circ}- \sec 20^{\circ}=$
jeemain
eamcet
math
2008
q24
asked
Oct 17, 2013
by
meena.p
1
answer
The amino acid binding site of tRNA is
jeemain
eamcet
biology
2012
q24
asked
Oct 16, 2013
by
thanvigandhi_1
1
answer
If $\sqrt{a+b}\tan\large\frac{\theta}{2}$$=\sqrt{a-b}\tan\large\frac{ \phi}{2}$ then $(b-a\sec \theta)(b+a\cos\phi)$ has maximum value $\lambda$ then $\lambda$ is
jeemain
math
class11
ch3
trigonometric-functions
q24
trignometric-equations
medium
asked
Oct 15, 2013
by
sreemathi.v
1
answer
$\cos A \cos 2A \cos 4A....... \cos 2^{n-1} A=$
jeemain
eamcet
math
2009
q24
asked
Oct 9, 2013
by
meena.p
1
answer
Two lines drawn through a point on the circumference of a circle divided the circle into three regions of equal area.Then the angle $\theta$ between the line is given by
jeemain
math
class11
ch3
trigonometric-functions
q24
angles
easy
asked
Oct 7, 2013
by
sreemathi.v
1
answer
The Comprehensibility of water is $5 \times 10^{-10}\;m^2/N$. It is subjected to a pressure of $15\;M\;pa$. The fraction decrease in volume will be
jeemain
physics
class11
unit7
properties-of-solids-and-fluids
q24
easy
asked
Oct 4, 2013
by
meena.p
1
answer
What is the amino acid sequence in the polypeptide segment translated from the mRNA base sequence of AGU-UUU-UCC-GGG-UCG?
jeemain
eamcet
biology
2013
q24
asked
Oct 3, 2013
by
thanvigandhi_1
1
answer
If $\cos (x-y), \cos x, \cos (x+y)$ are three distinct numbers which are in harmonic progression and $\cos x \neq \cos y,$ then $1+\cos y=$
jeemain
eamcet
math
2010
q24
asked
Sep 26, 2013
by
meena.p
1
answer
$^{15}P_{8}=A+8.^{14}P_7 =>A=$
jeemain
eamcet
math
2011
q24
asked
Sep 20, 2013
by
meena.p
1
answer
If $\tan (\pi \cos \theta)=\cot (\pi \sin \theta)$ then a value of $ \cos \bigg( \theta-\large\frac{\pi}{4}\bigg)$ among the following is :
jeemain
eamcet
math
2013
q24
asked
Sep 14, 2013
by
meena.p
1
answer
$\lim \limits _{x \to 0} \large\frac{x-\sin x}{x+ \cos ^2 x}$=............... .
jeemain
eamcet
math
1991
fitb
q24
asked
Sep 13, 2013
by
meena.p
0
answers
Among the alkali metals, the metal with the highest ionisation potential is ................ .
jeemain
eamcet
chemistry
1991
fitb
q24
asked
Sep 12, 2013
by
meena.p
0
answers
The distance between the eye lense and cross wire in a Ramsden eye piece, which has a field lens of focal length 1.2 cm is ................. cm.
jeemain
eamcet
physics
1991
fitb
q24
asked
Sep 11, 2013
by
meena.p
0
answers
An acetolysis of reaction takes place as follows
jeemain
chemistry
unit22
organic-chemistry
halogens
q24
medium
asked
Sep 4, 2013
by
sreemathi.v
1
answer
An object lying at the equator will fly off the surface of the earth , if the speed of rotation of earth increases n time its present value, then n is
jeemain
physics
class11
unit6
gravitation
q24
medium
asked
Aug 12, 2013
by
meena.p
1
answer
In the figure shown, a particle is released from the position A on a smooth track. When particle reaches B, the normal reaction on it by the track is
jeemain
physics
class11
unit4
work-power-energy
q24
medium
asked
Jul 18, 2013
by
meena.p
1
answer
The system as shown is released from rest. Neglecting friction and masses of pulleys, spring & rope the spring gets elongated if
jeemain
physics
class11
unit3
laws-of-motion
q24
difficult
asked
Jul 8, 2013
by
meena.p
1
answer
The dimensions of $RC$, where $R$ is resistence and $C$ is capacitance are same as that of
jeemain
physics
class11
ch2
units-and-measurement
q24
easy
dimensional-formulae-and-analysis
asked
Jun 17, 2013
by
meena.p
1
answer
The value of $'a'$ so that the curves $y=3e^{x}$ and $y=\large\frac{a}{3}e^{x}$ intersect orthogonally is
tnstate
class12
bookproblem
p231
objective
q24
sec-a
medium
asked
May 16, 2013
by
poojasapani_1
1
answer
If $\overrightarrow{a}+{b}+{c}=0,|\overrightarrow{a}|=3, |\overrightarrow{b}|=4,|\overrightarrow{c}|=5$ then the angle between $\overrightarrow{a}$ and $\overrightarrow{b}$ is
tnstate
class12
bookproblem
p266
objective
q24
asked
May 9, 2013
by
poojasapani_1
1
answer
A manufacturer considers that man and women workers are equally efficient and so he pays them at the same rate.He has 30 and 17 units of workers(male and female) and capital respectively,which he uses to produce two types of goods A and B.To produce 1 unit of A,2 workers and 3 units of capital are required while 3 workers and 1 unit of capital is required to produce 1 unit of B.If A and B are priced at Rs100 and 120 per unit respectively,how should he use his resources to maximize the total revenue?Form the above as an LPP and solve graphically.Do you agree with this view of the manufacturer that men and women workers are equally efficient and so should be paid at the same rate?
cbse
class12
modelpaper
2013
sec-c
q28
65-1
q25
65-2
q24
65-3
math
asked
Mar 20, 2013
by
sreemathi.v
0
answers
In a hockey match,both teams A and B scored same number of goals up to the end of the game,so to decide the winner ,the referee asked both the captains to throw a die alternately and decided that the team,whose captain gets a six first,will be declared the winner.If the captain of team A was asked to start,find their respective probabilities of winning the match and state whether the decision of the referee was fair or not.
cbse
class12
modelpaper
2013
sec-c
q27
65-1
q24
65-2
q26
65-3
math
asked
Mar 20, 2013
by
sreemathi.v
1
answer
Find the area of the region bounded by the parabola $y=x^2$ and y=| x |.
cbse
class12
modelpaper
2013
sec-c
q24
math
asked
Mar 20, 2013
by
sreemathi.v
1
answer
A diet is to contain at least 80 units of vitamin A and 100 units of minerals. Two foods \( F_1 \: and F_2\) are available . Food \( F_1 \) costs Rs. 4 perunit and \( F_2\) costs Rs. 6 per unit. One unit of food \( F_1 \) contains 3 units of vitamin A and 4 units of minerals. One unit of food \( F_2 \) contains 6 units of vitamin A and 3 units of minerals. Formulate this as a linear programming problem and find graphically the minimum cost for diet that consists of mixture of these two foods and also meets the minimal nutritional requirements.
cbse
class12
modelpaper
2012
sec-c
q24
math
asked
Feb 15, 2013
by
thanvigandhi_1
0
answers
Using matrices, solve the following system of equation $ x+y+z=3; 2x-y+z=2 ; x-2y+3z=2$
class12
modelpaper
2012
sec-c
q24
medium
asked
Feb 11, 2013
by
thanvigandhi_1
1
answer
Using elementary transformations, find the inverse of the following matrix : $ \begin{bmatrix} 2 & -1 & 4 \\ 4 & 0 & 2 \\ 3 & -2 & 7 \end{bmatrix} $
class12
modelpaper
2012
sec-c
q24
ch3
medium
asked
Feb 11, 2013
by
thanvigandhi_1
1
answer
Show that the rectangle of maximum area that can be inscribed in a circle is a square.
cbse
class12
modelpaper
2012
sec-c
q24
medium
math
asked
Feb 11, 2013
by
thanvigandhi_1
1
answer
Show that the height of the cylinder of maximum volume that can be inscribed in a cone of height \( h \: is \: \frac{1}{3}h\)
cbse
class12
modelpaper
2012
sec-c
q24
math
asked
Feb 11, 2013
by
thanvigandhi_1
0
answers
Solve the following systems of equations using matrix method : \[ x-y=3;\: 2x+3y+4x=17; \: y+2z=7\]
cbse
class12
modelpaper
2012
sec-c
q24
math
asked
Feb 9, 2013
by
thanvigandhi_1
1
answer
Show that the cylinder of given volume open at the top has minimum total surface area if its height is equal to radius of the base.
cbse
class12
modelpaper
2012
sec-c
q24
easy
math
asked
Feb 8, 2013
by
thanvigandhi_1
1
answer
Show that the height of a closed cylinder of given volume and the least surface area is equal to its diameter.
cbse
class12
modelpaper
2012
sec-c
q24
math
asked
Feb 8, 2013
by
thanvigandhi_1
0
answers
An open box with a square base is to be made out of a given quantity of cardboard of area \( c^2\) square units. Show that the maximum volume of the box is \(\large\frac{c^3}{6\sqrt 3}\) cubic units.
cbse
class12
modelpaper
2012
sec-c
q24
medium
math
asked
Feb 8, 2013
by
thanvigandhi_1
1
answer
A given quantity of metal is to be cast into a solid half cicular cylinder (i.e., with rectangular base and semicircular ends). Show that in order that the total surface area may be minimum, the ratio of the length of the cylinder to the diameter of its circular ends is \( \pi : ( \pi + 2). \)
cbse
class12
modelpaper
2012
sec-c
q24
difficult
math
asked
Feb 6, 2013
by
thanvigandhi_1
1
answer
Find all the local maximum values and local minimum values of the function \( f(x)=\sin 2x-x, -\large\frac{\pi}{2} < x < \large\frac{\pi}{2} \)
cbse
class12
modelpaper
2012
sec-c
q24
difficult
math
asked
Feb 6, 2013
by
thanvigandhi_1
1
answer
A window is in the form of a rectangle surmounted by a semi-circular opening. The total perimeter of the window is 10 metres. Find the dimensions of the rectangle so as to admit maximum light through the whole opening.
cbse
class12
modelpaper
2012
sec-c
q24
math
asked
Feb 5, 2013
by
thanvigandhi_1
0
answers
A letter is chosen at random from the word “ASSASSINATION”. Find the probability that the letter is a vowel.
cbse
class12
additionalproblem
kvquestionbank2012
ch13
q24
p42
math
asked
Feb 5, 2013
by
meena.p
0
answers
Find the equation of the plane passing through the line of intersection of the planes $ 2x+y-z=3 \: and \: 5x-3y+4z+9=0$ and parallel to the line \(\large \frac{x-1}{2}=\frac{y-3}{4}=\frac{z-5}{5}. \)
cbse
class12
modelpaper
2012
sec-c
q24
medium
math
asked
Feb 5, 2013
by
thanvigandhi_1
1
answer
A variable plane which remains at a constant distance 3p from the origin cuts the co-ordinate axes at A, B & C. Show that the locus of the centroid of the $ \bigtriangleup ABC\;is\; \Large\frac{1}{x^2}+\frac{1}{y^2}+\frac{1}{z^2}=\frac{1}{p^2}$
cbse
class12
additionalproblem
kvquestionbank2012
ch11
q24
p38
math
asked
Feb 5, 2013
by
meena.p
1
answer
Prove by vector method, that the parallelogram on the same base and between the same parallels are equal in area.
cbse
class12
additionalproblem
kvquestionbank2012
q24
p36
math
asked
Feb 5, 2013
by
meena.p
0
answers
Show that the right-circular cone of least curved surface and given volume has an altitude equal to \( \sqrt 2 \) times the radius of the base.
cbse
class12
modelpaper
2012
sec-c
q24
difficult
math
asked
Feb 5, 2013
by
thanvigandhi_1
1
answer
A window has the shape of a rectangle surmounted by an equilateral triangle. If the perimeter of the window is 12 m, find the dimensions of the rectangle that will produce the largest area of the window.
cbse
class12
modelpaper
2012
sec-c
q24
difficult
math
asked
Feb 5, 2013
by
thanvigandhi_1
1
answer
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