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Recent questions tagged q15
Questions
Let A and B be two independent events such that $P(A) = \large\frac{1}{5} \: P( A \cup B ) = \large\frac{7}{10}$. Ten $ P(\overline B)$ is equal to
jeemain
math
cbse
class11
probability
axiomatic-approach-to-probability
medium
q15
asked
Jan 8, 2014
by
thanvigandhi_1
1
answer
1.20g sample of $Na_2CO_3$ and $K_2CO_3$ was dissolved in water to form 100ml of a solution.20ml of this solution required 40ml of 0.1N HCl for complete neutralization.Calculate the weight of $Na_2CO_3$ in mixture. If another 20 ml of this solution is treated with excess of $BaCl_2$,what will be the weight of precipitate?
jeemain
chemistry
physical-chemistry
class11
unit1
some-basic-concepts-in-chemistry
stoichiometry
q15
difficult
asked
Jan 6, 2014
by
sreemathi.v
1
answer
If two events A and B $ P( A \cup B ) = 0.5\: and \: P(A \cap B ) = 0.4$ then $ P(A')+P(B')=$
jeemain
math
cbse
class11
probability
axiomatic-approach-to-probability
easy
q15
asked
Jan 2, 2014
by
thanvigandhi_1
1
answer
Find the sum of series 4 + 44 + 444 + 4444 +------upto n terms.
jeemain
math
class11
ch9
sequences-and-series
easy
sum-of-n-terms-of-special-series
q15
asked
Dec 31, 2013
by
yamini.v
1
answer
If the distance of the point $P(1,-2,1)$ from the plane $x+2y-2z=a$, where $a>0,$ is $5$, then the foot of the $\perp$ from $P$ to this plane is ?
jeemain
math
class12
ch11
3d-geometry
intersection-between-a-plane-and-a-line
difficult
q15
asked
Dec 27, 2013
by
rvidyagovindarajan_1
1
answer
If $(x)$ is differentiable and strictly increasing function then the value of $\lim\limits_{x\to 0}\large\frac{f(x^2)-f(x)}{f(x)-f(0)}$ is
jeemain
math
class12
ch5
continuity-and-differentiability
differentiability
easy
q15
asked
Dec 20, 2013
by
sreemathi.v
1
answer
On a new scale of temperature ( which is linear ) and called the W scale the freezing and boiling points of water are $ 39^{\circ}W \: and \: 239^{\circ} W$ respectively. What will be the temperature on the new scale, corresponding to a temperature of $39^{\circ}$C on the Celcius scale ?
aipmt
modelpaper
physics
2008
q15
asked
Dec 15, 2013
by
thanvigandhi_1
0
answers
Integrate : $ \int \limits _{-1}^5 \large\frac{|x|}{x}$$dx$
jeemain
math
class12
ch7
integral-calculus
integrals-as-an-anti-derivative
easy
q15
asked
Dec 12, 2013
by
meena.p
1
answer
Which of the following relation is correct?
jeemain
chemistry
unit8
redox-reactions-and-electrochemistry
q15
easy
asked
Dec 10, 2013
by
sreemathi.v
1
answer
Which of the following molecule is expected to exhibit the diamagnetic behavior?
jeemain
chemistry
physical-chemistry
class11
unit4
chemical-bonding-and-molecular-structure
molecular-orbital-theory
q15
medium
asked
Dec 9, 2013
by
sreemathi.v
1
answer
The viruses with nucleic acid but without protein coat are known as :
jeemain
eamcet
biology
2002
q15
asked
Dec 6, 2013
by
thanvigandhi_1
0
answers
Which one of the following oxides is expected to exhibit paramagnetic behavior?
jeemain
chemistry
physical-chemistry
class11
unit4
chemical-bonding-and-molecular-structure
molecular-orbital-theory
q15
easy
asked
Dec 6, 2013
by
sreemathi.v
1
answer
Refer to the below reaction :
jeemain
chemistry
unit21
organic-chemistry
q15
difficult
basic-organic-chemistry
class11
ch12
asked
Dec 4, 2013
by
sreemathi.v
1
answer
Rank the alkenes given below in terms of their relative stability starting with the most stable?
jeemain
chemistry
unit21
organic-chemistry
q15
medium
basic-organic-chemistry
class11
ch12
asked
Dec 3, 2013
by
sreemathi.v
1
answer
The virus which causes ring spot disease in cherry is transmitted through
jeemain
eamcet
biology
2001
q15
asked
Dec 1, 2013
by
thanvigandhi_1
1
answer
DiBorane hybridazition is
jeemain
chemistry
unit15
p-block-elements
q15
easy
asked
Nov 26, 2013
by
sreemathi.v
1
answer
If $A,B$ and $C$ are the angles of a $\Delta$le then $\begin{vmatrix}\sin 2A&\sin C&\sin B\\\sin C&\sin 2B&\sin A\\\sin B&\sin A&\sin 2C\end{vmatrix}$ = $\lambda\sin A\sin B\sin C$, then $\lambda$ is
jeemain
math
class12
ch4
determinants
q15
area-of-a-triangle
difficult
asked
Nov 25, 2013
by
sreemathi.v
1
answer
The maize varieties. Dixie.11.22 where introduces into India from this country :
jeemain
eamcet
biology
2000
q15
asked
Nov 24, 2013
by
thanvigandhi_1
0
answers
The haploid chromosome number in Saccharum officinale is as many times greater in the following as that of Zeamays
jeemain
eamcet
biology
1999
q15
asked
Nov 22, 2013
by
thanvigandhi_1
0
answers
If $A=\begin{bmatrix}1&-2\\4&5\end{bmatrix}$ and $f(1)=t^2-3t+7$ then $f(A)+\begin{bmatrix}3&6\\-12&-9\end{bmatrix}$ is equal to
jeemain
math
class12
ch3
matrices
q15
operations-on-matrices
medium
asked
Nov 22, 2013
by
sreemathi.v
1
answer
Consider the set A of all determinants of order 3 with entries 0 or 1 only.Let B be the subset of A consisting of all determinants with value 1.Let C be the subset of A consisting of all determinants with value -1.Then
jeemain
math
ch4
class12
determinants
q15
properties-of-determinants
easy
asked
Nov 20, 2013
by
sreemathi.v
1
answer
What are the units of Equilibrium equations $K_p$ and $K_c$ when $\Delta n_g < 0$ respectively ?
sat
chemistry
chemical-equilibrium
jeemain
aipmt
medium
q15
equilibrium
biology
asked
Nov 15, 2013
by
mosymeow_1
1
answer
There are two holes one each along the opposite sides of a wide rectangular tank. The cross- section of each hole is $0.01m^2$ and the vertical distance between the holes is one meter. The tank is filled with water the net force on the tank in newton when the water flows out of the holes is : (Density of water $=1000\;kg/m^3)$
jeemain
eamcet
physics
2004
q15
asked
Nov 13, 2013
by
meena.p
1
answer
$E_1: a+b+c=0$, if 1 is a root of $ax^2+bx+c=0$ .$E_2:b^2-a^2=2ac,$ if $\sin \theta, \cos \theta$ are the roots of $ax^2+bx+c=0$ Which of the following is true?
jeemain
eamcet
math
2005
q15
asked
Nov 11, 2013
by
meena.p
1
answer
Identify the plant in which the tangential walls of collocytes are excessively thickened but radial walls are thin :
jeemain
eamcet
biology
2010
q15
asked
Nov 10, 2013
by
thanvigandhi_1
0
answers
Identify the correct order in which the covalent radius of the following elements increases:
jeemain
eamcet
chemistry
2005
q15
asked
Nov 8, 2013
by
meena.p
0
answers
An iron sphere of mass $20 \times 10^{-3}\;kg$ falls through a viscous liquid with terminal velocity $0.5\;ms^{-1}.$ The terminal velocity $(in\; ms^{-1})$ of another iron sphere of mass $54 \times 10^{-2}\;kg$ is :
jeemain
eamcet
physics
2005
q15
asked
Nov 7, 2013
by
meena.p
1
answer
The difference between two roots of the equation $x^3-13x^2+15x+189=0$ is 2. Then the roots of the equation are :
jeemain
eamcet
math
2006
q15
asked
Nov 5, 2013
by
meena.p
1
answer
If $\overrightarrow a\:\:and\:\:\overrightarrow b$ are unit vectors and $\theta$ is angle between them then $\large\frac{1}{2}$$|\overrightarrow a-\overrightarrow b|$=?
jeemain
math
class12
ch10
vector-algebra
medium
addition-of-vector
q15
asked
Nov 1, 2013
by
rvidyagovindarajan_1
1
answer
Electronlysis of X gives Y at anode. Vacuum distillation of Y gives $H_2O_2$. The number of peroxy (O-O) bonds present in X and Y respectively are :
jeemain
eamcet
chemistry
2006
q15
asked
Oct 30, 2013
by
meena.p
1
answer
An air bubble of radius 1 cm rises from the bottom portion through a liquid of density $1.5 g/cc$ at a constant speed of $0.250 \;cm^{-1}$.If the density of air is neglected, the coefficient of viscosity of the liquid is approximately, (In pas):
jeemain
eamcet
physics
2006
q15
asked
Oct 29, 2013
by
meena.p
1
answer
The molality of 1M solution of NaCl (specific gravity $1.0585g/ml$) is :
jeemain
chemistry
physical-chemistry
class11
unit1
some-basic-concepts-in-chemistry
stoichiometry
q15
easy
asked
Oct 28, 2013
by
sreemathi.v
1
answer
Study the following lists
jeemain
eamcet
biology
2011
q15
asked
Oct 26, 2013
by
thanvigandhi_1
1
answer
The set of values of x for which the inequalities $x^2-3x-10 < 0, 10 x - x^2 -16 >0 $ hold simultaneously, is
jeemain
eamcet
math
2007
q15
asked
Oct 24, 2013
by
meena.p
1
answer
138 g of ethyl alcohol is mixed with 72 g of water. The ratio of mole fraction of alcohol to water is
jeemain
eamcet
chemistry
2007
q15
asked
Oct 23, 2013
by
meena.p
1
answer
On dissolving 2.0g of metal in sulphuric acid 4.51g of the metal sulphate was formed.The specific heat of the metal is 0.057cal/g.What is the exact atomic mass of the metal?
jeemain
chemistry
physical-chemistry
class11
unit1
some-basic-concepts-in-chemistry
atomic-and-molecular-masses
q15
medium
asked
Oct 23, 2013
by
sreemathi.v
1
answer
A horizontal pipe of non-uniform cross- section allows water to flow through it with a velocity $1\; ms^{-1}$ when pressure is $50\;kPa$ at a point. If the velocity of flow has to be $2 ms^{-1}$ at some other point the pressure at that point should be
jeemain
eamcet
physics
2007
q15
asked
Oct 22, 2013
by
meena.p
1
answer
The value of $\sum\limits_{n=1}^{\infty}\large\frac{\tan\bigg(\Large\frac{\theta}{2^n}\bigg)}{2^{n-1}\cos\bigg(\Large\frac{\theta}{2^{n-1}}\bigg)}$ is equal to
jeemain
math
class11
ch3
trigonometric-functions
q15
basic-trigonometric-functions
difficult
asked
Oct 18, 2013
by
sreemathi.v
1
answer
If $ \alpha+\beta=-2$ and $\alpha^3+\beta^3=-56$, then the quadratic equation whose roots are $\alpha$ and $\beta$ is
jeemain
eamcet
math
2008
q15
asked
Oct 16, 2013
by
meena.p
1
answer
A student observed four plants (A, B, C, D). The number of stamens in a flower of 'A' is equal to those of a flower of 'B' . Out of the ten stamens arranged in two bundles in a flower of 'C', the stamen number in the bundle which possesses most of the stamens is three times to that of inner whorl of a flower of 'A'. In 'D' , the number of stamens is equal to those present in the inner whorl of plant 'B'. Identify A,B,C and D plants respectively.
jeemain
eamcet
biology
2012
q15
asked
Oct 16, 2013
by
thanvigandhi_1
1
answer
$\large\frac{\tan 3x}{\tan x}$ lies between
jeemain
math
class11
ch3
trigonometric-functions
q15
trignometric-equations
medium
asked
Oct 14, 2013
by
sreemathi.v
1
answer
Let A and B be two symmetric matrices of same order. Then the matrix $AB-BA$ is :
jeemain
eamcet
math
2009
q15
asked
Oct 9, 2013
by
meena.p
1
answer
If $\alpha+\beta+\gamma=\pi$ then the value of $\sin^2\alpha+\sin^2\beta-\sin^2\gamma$ is equal to
jeemain
math
class11
ch3
trigonometric-functions
q15
trignometric-identities
easy
asked
Oct 7, 2013
by
sreemathi.v
1
answer
Velocity of the liquid coming out of a small hole of u vessel containing two different liquids of density $2 \rho$ ans $\rho$ as shown is
jeemain
physics
class11
unit7
properties-of-solids-and-fluids
q15
medium
asked
Oct 3, 2013
by
meena.p
1
answer
There are 25 flowers in an inflorescence of Allium. Each anther lobe of every stamen contains 60 pollen grains. What is the total number of pollen grains produced in its inflorescence?
jeemain
eamcet
biology
2013
q15
asked
Oct 2, 2013
by
thanvigandhi_1
1
answer
$f(x)=\begin {vmatrix} 2 \cos x & 1 & 0 \\ x-\frac{\pi}{2} & 2 \cos x & 1 \\ 0 & 1 & 2 \cos x \end {vmatrix}=>f'(\pi)=$
jeemain
eamcet
math
2010
q15
asked
Sep 26, 2013
by
meena.p
1
answer
If $I_n=\int \limits _0^{\pi/4} \tan ^n \theta d \theta$ for $n=1,2,3........$ then $I_{n-1}+I_{n+1}=.............$
jeemain
eamcet
math
2011
q15
asked
Sep 20, 2013
by
meena.p
1
answer
If $A=\begin{bmatrix} -8 & 5 \\ 2 & 4 \end{bmatrix}$ satisfies the equation $x^2+4x-p=0,$ then $p=$
jeemain
eamcet
math
2013
q15
asked
Sep 14, 2013
by
meena.p
1
answer
The length of portion of tangent at any point on the curve $x^{\Large\frac{2}{3}}$$+y^{\Large\frac{2}{3}}$$=a^{\Large\frac{2}{3}}$ intercepted between the axes is ................ .
jeemain
eamcet
math
1991
fitb
q15
asked
Sep 13, 2013
by
meena.p
0
answers
Tha smallest value of $x^2-3x+3$ in the interval $(-3,\large\frac{3}{2})$ is equal to :
jeemain
eamcet
math
1991
q15
asked
Sep 13, 2013
by
meena.p
1
answer
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