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Recent questions tagged q22
Questions
Identify the correct sequence of the stages in the life cycle of Rhizopus after the reduction division of zygospore :
jeemain
eamcet
biology
2010
q22
asked
Nov 11, 2013
by
thanvigandhi_1
1
answer
The vapour pressure of water at $23^{\circ} C$ is $19.8 \;mm. 0.1 $ mole of glucose is dissolved in $178.2\; g$ of water. What is the vapour pressure (in mm) of the resultant solution ?
jeemain
eamcet
chemistry
2005
q22
asked
Nov 11, 2013
by
meena.p
0
answers
The vapour pressure of water at $23^{\circ}$ is $19.8\;mm. 0.1$ mole of glucose is dissolved in $178.2\;g$ of water. What is the vapour pressure (in mm) of the resultant solution ?
jeemain
eamcet
chemistry
2005
q22
asked
Nov 8, 2013
by
meena.p
0
answers
A transverse wave propagating on a stretched string of linear density $3 \times 10^{-4}\;kg-m^{-1}$ is represented by the equation $y=0.2 \sin (15 x +60 l)$ where x is in meters and l is in seconds . The tension in the string (in newton) is :
jeemain
eamcet
physics
2005
q22
asked
Nov 7, 2013
by
meena.p
1
answer
$|\overrightarrow a|=3,\:|\overrightarrow b|=4,\:|\overrightarrow a+\overrightarrow b|=5,$ then $|\overrightarrow a-\overrightarrow b|=?$
jeemain
math
class12
ch10
vector-algebra
medium
addition-of-vectors
q22
asked
Nov 6, 2013
by
rvidyagovindarajan_1
1
answer
The product of the distinct (2n)th roots of $1+i \sqrt 3$ is equal to :
jeemain
eamcet
math
2006
q22
asked
Nov 5, 2013
by
meena.p
1
answer
Calculate the weight of iron which will be converted into its oxide by the action of 18g of steam
jeemain
chemistry
physical-chemistry
class11
unit1
some-basic-concepts-in-chemistry
mole-concept-and-molar-masses
q22
easy
asked
Oct 31, 2013
by
sreemathi.v
1
answer
At $T(K) , 100 L$ of dry oxygen is present in a sealed container. It is subjected to silent electric discharge , till the volumes of oxygen and ozone become equal. What is the volume (in liters) of ozone formed at $T(k)$?
jeemain
eamcet
chemistry
2006
q22
asked
Oct 30, 2013
by
meena.p
1
answer
An observer is standing 500 m away from a vertical hill, a police van sounding a siren of frequency 1000 Hz moves towards the hill with a uniform speed. If the frequency of the sound heard directly from the siren is 970 Hz. the frequency of the sound heard after reflection from the hill (in Hz) is about, (velocity of sound =$330\;ms^{-1}$):
jeemain
eamcet
physics
2006
q22
asked
Oct 29, 2013
by
meena.p
1
answer
The number of $F_2$ plants found similar to $F_1$ phenotype and genotypes, respectively in a total of 128 plants in $F_2$ progeny of a Mendelian dihybrid cross :
jeemain
eamcet
biology
2011
q22
asked
Oct 26, 2013
by
thanvigandhi_1
1
answer
The locus of the point $z=x+iy$ satisfying $\bigg|\large\frac{z-2i}{z+2i} \bigg|$$=1$ is
jeemain
eamcet
math
2007
q22
asked
Oct 24, 2013
by
meena.p
1
answer
Which one of the following noble gases is used in miner's cap lamps ?
jeemain
eamcet
chemistry
2007
q22
asked
Oct 23, 2013
by
meena.p
1
answer
The atomic composition of the entire universe is approximately given in the table below
jeemain
chemistry
physical-chemistry
class11
unit1
some-basic-concepts-in-chemistry
percentage-composition
q22
medium
asked
Oct 23, 2013
by
sreemathi.v
1
answer
A segment of wire vibrates with a fundamental frequency of $450\;Hz$ under a tension of 9 Kg wt. Then tension at which the fundamental frequency of the same wire becomes 900 Hz is
jeemain
eamcet
physics
2007
q22
asked
Oct 22, 2013
by
meena.p
1
answer
The greater of the angles $A=2\tan^{-1}(2\sqrt 2-1),B=3\sin^{-1}\big(\large\frac{1}{3}\big)$$+\sin^{-1}(\large\frac{3}{5})$ is
jeemain
math
class11
ch3
trigonometric-functions
q22
angles
difficult
asked
Oct 21, 2013
by
sreemathi.v
1
answer
If $\Omega$ is a complex cube root of unity, then $\sin\bigg\{(\omega ^{10}+ \omega^{23}) \pi -\large \frac{\pi}{4}\bigg\}=$
jeemain
eamcet
math
2008
q22
asked
Oct 17, 2013
by
meena.p
1
answer
Find out the correct combination concerning the components of photosynthetic electron transport, location in relation to thylakoid and action
jeemain
eamcet
biology
2012
q22
asked
Oct 16, 2013
by
thanvigandhi_1
1
answer
If $a\cos 2\theta+b\sin 2\theta=c$ has $\alpha$ & $\beta$ as its solutions then $\tan\alpha+\tan\beta$ and $\tan\alpha\tan\beta$ is equal to
jeemain
math
class11
ch3
trigonometric-functions
q22
trignometric-equations
medium
asked
Oct 15, 2013
by
sreemathi.v
1
answer
The period of $\sin ^4 x+\cos ^4x $ is :
jeemain
eamcet
math
2009
q22
asked
Oct 9, 2013
by
meena.p
1
answer
If $a\sin\theta+5\cos\theta=5$ then the value of $5\sin\theta-3\cos\theta$ is equal to
jeemain
math
class11
ch3
trigonometric-functions
q22
trignometric-identities
easy
asked
Oct 7, 2013
by
sreemathi.v
1
answer
A steel wire of uniform cross- section of $2\;mm^2$ is heated upto $50^{\circ}$ and clamped rigidly at two ends. If the temperature of wire falls to $30^{\circ}$ then change in tension in wire will be , if coefficient of linear expansion of steel is $1.1 \times 10^{-5}/ ^{\circ} C$ and $Y=2 \times 10^{11} N/m^2$
jeemain
physics
class11
unit7
properties-of-solids-and-fluids
q22
easy
asked
Oct 3, 2013
by
meena.p
1
answer
Arrange the following in sequential order of their usage in recombinant DNA technology.
jeemain
eamcet
biology
2013
q22
asked
Oct 3, 2013
by
thanvigandhi_1
1
answer
The period of $\bigg(\tan \theta -\large\frac{1}{3}$$ \tan ^3 \theta\bigg)\bigg(\large\frac{1}{3}$$-\tan ^2 \theta\bigg)^{-1},$ Where $\tan ^{2} \theta \neq \large\frac{1}{3}$ is :
jeemain
eamcet
math
2010
q22
asked
Sep 26, 2013
by
meena.p
1
answer
A bag contains $n$ white and $n$ black balls. Pairs of balls are drawn at random without replacement successively, until the bag is empty. If the number of ways in which each pair consists of one white and one black balls is $14,400.$ then $n=$
jeemain
eamcet
math
2011
q22
asked
Sep 20, 2013
by
meena.p
1
answer
The period of $f(x)=\cos \bigg(\large\frac{x}{3}\bigg)$$+\sin \bigg(\large\frac{x}{2}\bigg)$ is
jeemain
eamcet
math
2013
q22
asked
Sep 14, 2013
by
meena.p
1
answer
The locus of the point of intersection of the perpendicular tangents to the ellipse $\large\frac{x^2}{a^2}+\frac{y^2}{b^2}$$=1$ is ................
jeemain
eamcet
math
1991
fitb
q22
asked
Sep 13, 2013
by
meena.p
1
answer
The rate of diffusion of He is .............. the rate of diffusion of $CH_4$.
jeemain
eamcet
chemistry
1991
fitb
q22
asked
Sep 12, 2013
by
meena.p
0
answers
A particle of mass $4 \;m $ which is at rest explodes into three fragments. Two of the frangements each of mass $\mathit{m}\;$ are found to move with a speed of $\mathit{v}\;$ each in mutually perpendicular direction. The total energy released in the process is ................ .
jeemain
eamcet
physics
1991
fitb
q22
asked
Sep 11, 2013
by
meena.p
0
answers
Refer to the below equation :
jeemain
chemistry
unit22
organic-chemistry
halogens
q22
medium
asked
Sep 3, 2013
by
sreemathi.v
1
answer
A Spherical uniform planet is rotating about its axis . The velocity of a point on its equator is v. Due to the rotation of planet about its axis the acceleration due to gravity of at equator is $\large\frac{1}{2}$ of acceleration due to gravity at poles. The escape velocity of a particle on the poles of planet in terms of v
jeemain
physics
class11
unit6
gravitation
q22
medium
asked
Aug 12, 2013
by
meena.p
1
answer
A block of mass $m$ initially at rest is dropped from a height $ h$ on to a spring of force constant $k$. The maximum compression in spring is $x$ ,then
jeemain
physics
class11
ch6
work-power-energy
q22
easy
potential-energy
potential-energy-of-a-spring
asked
Jul 18, 2013
by
meena.p
1
answer
An inclined plane makes an angle $30 ^{\circ}$ with horizontal. A groove $OA=5 m$ cut on the plane makes an angle $30 ^{\circ}$ with $OX$. A short smooth cylinder is free to slide down the groove under the influence of gravity. The time taken by the cylinder to reach from A to O is $(g=10 m/s^2)$
jeemain
physics
class11
unit3
laws-of-motion
q22
medium
asked
Jul 5, 2013
by
meena.p
1
answer
Dimensional formula for the product of two physical quantities $P$ and $Q$ is $ ML^2T^{-2}$. The dimensional formula for $\large \frac{P}{Q}$ is $ML^0T^{-2}$. $P$ and $Q$ are
jeemain
physics
class11
ch2
units-and-measurement
q22
easy
dimensional-formulae-and-analysis
asked
Jun 17, 2013
by
meena.p
1
answer
For the curve $x=e^{t}\cos t: y=e^{t}\sin t$ the tangent line is parallel to the $x$-axis when $t$ is equal to
tnstate
class12
bookproblem
p231
objective
q22
sec-a
medium
asked
May 16, 2013
by
poojasapani_1
1
answer
If $\overrightarrow{a}$ and $\overrightarrow{b} $ include an angle $120^{\circ}$ and their magnitude are $2$ and $\sqrt{3}$ then $\overrightarrow{a} .\overrightarrow{b} $ is equal to
tnstate
class12
bookproblem
p265
objective
q22
modelpaper
jun-2007
jun-2009
asked
May 8, 2013
by
poojasapani_1
1
answer
Using properties of determinants,prove the following $\begin{vmatrix}3x& -x+y & -x+z\\x-y & 3y & z-y\\x-z & y-z & 3z\end{vmatrix}=3(x+y+z)(xy+yz+zx)$
cbse
class12
modelpaper
2013
sec-b
q22
65-3
math
asked
Mar 22, 2013
by
sreemathi.v
1
answer
If $\overrightarrow{p}=5\hat{i}+\lambda\hat{j}-37\hat{k}$ and $\overrightarrow{q}=\hat{i}+3\hat{j}-5\hat{k}$,then find the value of $\lambda$,so that $\overrightarrow{p}+\overrightarrow{q}$ and $\overrightarrow{p}-\overrightarrow{q}$ are perpendicular vectors.
cbse
class12
modelpaper
2013
sec-b
q22
65-2
math
asked
Mar 22, 2013
by
sreemathi.v
1
answer
The probabilities of two students A and B coming to the school in time are $\frac{3}{7}$ and $\frac{5}{7}$ respectively.Assuming that the events,'A coming in time' and 'B coming in time' are independent ,find the probability of only one of them coming to the school in time.Write at least one advantage of coming to school in time.
cbse
class12
modelpaper
2013
sec-b
q22
65-1
q18
65-2
q16
65-3
ch13
math
asked
Mar 20, 2013
by
sreemathi.v
1
answer
If $A=\begin{bmatrix}1 & 2\\-2 & 1\end{bmatrix},B=\begin{bmatrix}2 & 3\\3 & -4\end{bmatrix}\;and\;C=\begin{bmatrix}1 & 0\\-1 & 0\end{bmatrix},verify:(ii)\;A(B+C)=AB+AC$
cbse
class12
ch3
q22
q22-2
p55
shortanswer
exemplar
sec-b
medium
math
asked
Mar 5, 2013
by
sreemathi.v
1
answer
Find the equation of the tangent to the curve $ y= \sqrt{3x-2}$ which is parallel to the line $4x-2y+5=0$
cbse
class12
modelpaper
2012
sec-b
q22
medium
math
asked
Feb 15, 2013
by
thanvigandhi_1
1
answer
Find the intervals in which the function f given by \( f(x)=x^3+\frac{1}{x^3}, x \neq 0\) is (i) increasing (ii) decreasing.
cbse
class12
modelpaper
2012
sec-b
q22
easy
math
asked
Feb 15, 2013
by
thanvigandhi_1
1
answer
A and B throw a pair of die turn by turn. The first to throw 9 is awarded a prize. If A starts the game, What is the probability of A getting the prize?
cbse
class12
modelpaper
2012
sec-b
q22
difficult
jeemain
probability
math
asked
Feb 11, 2013
by
thanvigandhi_1
1
answer
A pair of dice is thrown 4 times. If getting a doublet is considered a success, find the probability distribution of number of successes.
cbse
class12
modelpaper
2012
sec-b
q22
difficult
math
asked
Feb 11, 2013
by
thanvigandhi_1
1
answer
Two balls are drawn from an urn containing 2 white, 3 red and 4 black balls one by one without replacement. What is the probability that at least one ball is red?
cbse
class12
modelpaper
2012
sec-b
q22
medium
math
asked
Feb 9, 2013
by
thanvigandhi_1
1
answer
Three cards are drawn successively with replacement from a well shuffled deck of 52 playing cards. If getting a card of spade is considered a success, find the probability distribution of the number of success.
cbse
class12
modelpaper
2012
sec-b
q22
medium
math
asked
Feb 8, 2013
by
thanvigandhi_1
1
answer
Find the vector equation of the line passing through (1,2,3) and perpendicular to the plane \( \overrightarrow r.(\hat i + 2\hat j - 5\hat k)+9=0\)
cbse
class12
modelpaper
2012
sec-b
q22
easy
math
asked
Feb 8, 2013
by
thanvigandhi_1
1
answer
Evaluate : \[ \frac{sin\: 2x}{a^2sin^2x+b^2cos^2x}dx\]
cbse
class12
modelpaper
2012
sec-b
q22
math
asked
Feb 7, 2013
by
thanvigandhi_1
0
answers
Two cards are drawn from a well - shuffled pack of 52 cards without replacement. What is the probability that one is a red queen and the other is a king of black colour.
cbse
class12
modelpaper
2012
sec-b
q22
medium
math
asked
Feb 6, 2013
by
thanvigandhi_1
1
answer
Find the mean number of heads in three tosses of a fair coin.
cbse
class12
modelpaper
2012
sec-b
q22
math
asked
Feb 5, 2013
by
thanvigandhi_1
0
answers
A fair die is rolled. The probability that the first 1 occurs at the even number of trails is ?
cbse
class12
additionalproblem
kvquestionbank2012
ch13
q22
p42
math
asked
Feb 5, 2013
by
meena.p
0
answers
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