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Recent questions tagged q15
Questions
The bonds in $K_4 Fe(CN)_6$ are:
jeemain
eamcet
chemistry
1991
q15
asked
Sep 11, 2013
by
meena.p
1
answer
Five equal capacitors connected in series have a resultant capacitance of $4 \mu F$. The total energy stored in these when these are connected in parallel and charged to $400\; V$, is ................ joules.
jeemain
eamcet
physics
1991
fitb
q15
asked
Sep 11, 2013
by
meena.p
0
answers
Light of frequency 1.5 times the threshold frequency, incident on a photo sensitive material. If the frequency of incident light is halved and the intensity is doubled the photo current becomes:
jeemain
eamcet
physics
1991
q15
asked
Sep 10, 2013
by
meena.p
1
answer
Which of the following compounds undergoes solvolysis in aquoes ethanol most rapidly?
jeemain
chemistry
unit22
organic-chemistry
halogens
q15
medium
asked
Aug 26, 2013
by
sreemathi.v
1
answer
At higher temperature iodoform reaction is given by
jeemain
chemistry
unit22
organic-chemistry
halogens
q15
easy
asked
Aug 23, 2013
by
sreemathi.v
1
answer
A rocket is launched with velocity 10 km/s if radius of earth is R, then maximum height attained by it will be
jeemain
physics
class11
unit6
gravitation
q15
easy
asked
Aug 10, 2013
by
meena.p
1
answer
Find the absolute maximum value and the absolute minimum value of the following functions in the given intervals: $ f (x) = \sin x+\cos x, x \in [0,\pi] $
cbse
class12
bookproblem
ch6
sec5
q5
q5-2
p232
sec-b
easy
modelpaper
2012
q15
math
asked
Aug 7, 2013
by
sreemathi.v
1
answer
A sphere of mass m moving with velocity v enters, a hanging bag of sand and stops. If the mass of bag is M and it is raised by height h, then the velocity of sphere was
jeemain
physics
class11
ch6
law-of-conservation-of-energy
work-power-energy
q15
medium
asked
Jul 17, 2013
by
meena.p
1
answer
Find the equation of the tangent line to the curve \(y = x^2 - 2x +7\) which is $(b)\; perpendicular\; to\; the\; line\; 5y-15x=13$
cbse
class12
bookproblem
ch6
sec3
q15
q15-b
p212
sec-b
easy
math
asked
Jul 11, 2013
by
sreemathi.v
1
answer
A $250 \;kg$ boat $4.5\;m$ long is floating with out motion on still water, with a boy of mass $50\; kg$ at one end. If he runs to the other end of the boat and stops, by how much distance the boat moves back?
jeemain
physics
class11
unit3
laws-of-motion
q15
medium
asked
Jul 5, 2013
by
meena.p
1
answer
One card is drawn at random from a well shuffled deck of 52 cards. In which of the following cases are the events E and F independent? (i) E : the card drawn is a spade F : the card drawn is an ace (ii) E : the card drawn is black F : the card drawn is a king (iii) E : the card drawn is a king or queen F : the card drawn is a queen or jack.
bookproblem
cbse
class12
ch13
sec2
sec-b
easy
p547
q15
math
asked
Jun 19, 2013
by
balaji.thirumalai
1
answer
One card is drawn at random from a well shuffled deck of 52 cards. Are E and F independent if E : the card drawn is a king or queen F : the card drawn is a queen or jack?
class12
easy
p547
q15
q15-3
sec-a
sec2
ch13
bookproblem
cbse
math
asked
Jun 19, 2013
by
balaji.thirumalai
1
answer
One card is drawn at random from a well shuffled deck of 52 cards. Are E and F independent if E : the card drawn is black F : the card drawn is a king?
cbse
class12
bookproblem
ch13
sec2
sec-a
easy
q15
q15-2
p547
math
asked
Jun 19, 2013
by
balaji.thirumalai
1
answer
Volt is equivalent to
jeemain
physics
class11
ch2
units-and-measurement
q15
easy
international-system-of-units
asked
Jun 17, 2013
by
meena.p
1
answer
Find the position vector of a point $R$ which divides the line joining two points $P$ and $Q$ whose position vectors are $ \hat i + 2\hat j − \hat k$ and $– \hat i + \hat j + \hat k$ respectively, in the ratio $2 : 1$ externally
cbse
class12
bookproblem
ch10
sec2
q15
q15-2
p440
sec-b
medium
math
asked
May 20, 2013
by
sreemathi.v
1
answer
What is the surface area of a sphere when the volume is increasing at the same rate as its radius?
tnstate
class12
bookproblem
p230
objective
q15
modelpaper
mar-2010
asked
May 15, 2013
by
poojasapani_1
1
answer
Inverse of $\begin{bmatrix}2& -1 \\-5 & 3 \end{bmatrix}$ is
tnstate
class12
bookproblem
p264
objective
q15
modelpaper
mar-2006
oct-2007
oct-2008
oct-2009
asked
May 7, 2013
by
poojasapani_1
1
answer
Derive the formula for the volume of a right circular cone with radius $'r'$ and height $'h'$.
tnstate
class12
bookproblem
ch7
sec-1
exercise7-4
p118
q15
asked
Apr 30, 2013
by
poojasapani_1
1
answer
Solve : $\large \frac{d^2y}{dx^2}\normalsize =\log x$
isc
class12
modelpaper
2003
part-2
sec-d
q15
q15-b
asked
Apr 22, 2013
by
sreemathi.v
0
answers
Find the real values of $x$,$y$ satisfying the equality $\large \frac{x-2+(y-3)i}{1+i}\normalsize=1-3i$
isc
class12
modelpaper
2003
part-2
sec-d
q15
q15-a
asked
Apr 22, 2013
by
sreemathi.v
0
answers
Solve the differential equation $(1-x^2)\large\frac{dy}{dx}\normalsize-xy=x$. Given $y=2$ when $x=0$.
isc
class12
modelpaper
2004
part-2
sec-d
q15
q15-b
asked
Apr 19, 2013
by
sreemathi.v
0
answers
Given $z=x+iy$ and $z_1=1+2i$ determine the region in the complex plane represented by $I<\mid z-z_1\mid\leq 3$.Represent it on the Argand plane.
isc
class12
modelpaper
2004
part-2
sec-d
q15
q15-a
asked
Apr 19, 2013
by
sreemathi.v
0
answers
A coin is tossed 5 times.What is the probability of getting at least three heads?
isc
class12
modelpaper
2005
sec-c
q15
q15-b
asked
Apr 18, 2013
by
sreemathi.v
0
answers
A manufacturing firm produces steel pipes in three plants A,B and C with daily production of 500,1000 and 2000 units respectively.The fractions of defective steel pipes output produced by the plants A,B and C are respectively .005, .008 and .010.If a pipe is selected from a day's total production and found to be defective,find out the probability that it came from the first plant.
isc
class12
modelpaper
2005
sec-c
q15
q15-a
asked
Apr 18, 2013
by
sreemathi.v
1
answer
A company has two plants which manufacture scooters.Plant I manufactures 80% of the scooters while Plant II manufactures 20% of the scooters.At plant I ,85 out of 100 scooters are rated as being of standard quality,while at Plant II only 65 out of 100 scooters are rated as being of standard quality.If a scooter is of standard quality,what is the probability that it came from Plant I?
isc
class12
modelpaper
2006
sec-c
q15
q15-b
asked
Apr 17, 2013
by
sreemathi.v
1
answer
Four dice are thrown simultaneously.If the occurrence of an odd number in a single dice is considered a success,find the probability of at most 2 successes.
isc
class12
modelpaper
2006
sec-c
q15
q15-a
asked
Apr 17, 2013
by
sreemathi.v
0
answers
An insurance company insured 1500 scooter drivers,2500 car drivers and 4500 truck drivers.The probability of a scooter ,a car and a truck meeting with an accident is 0.01,0.02 and 0.04 respectively.If one of the insured persons meets with an accident,find the probability that he is a scooter driver.
isc
class12
modelpaper
2007
sec-c
q15
q15-b
asked
Apr 16, 2013
by
sreemathi.v
1
answer
In a binomial distribution,the sum of its mean and the variance is 1.8.Find the probability of two successes if the event was conducted 5 times.
isc
class12
modelpaper
2007
sec-c
q15
q15-a
asked
Apr 16, 2013
by
sreemathi.v
0
answers
A class consists of 50 students out of which there are 10 girls.In the class 2 girls and 5 boys are rank holders in an examination.If a student is selected at random from the class and is found to be a rank holder,what is the probability that the student selected is a girl?
isc
class12
modelpaper
2008
sec-c
q15
q15-b
asked
Apr 15, 2013
by
sreemathi.v
1
answer
Eight coins are thrown simultaneously.
isc
class12
modelpaper
2008
sec-c
q15
q15-a
asked
Apr 15, 2013
by
sreemathi.v
0
answers
A propeller costs Rs. 1,80,000 and its effective life is estimated to be 10 years.A sinking fund is created for replacing the propeller by a new model at the end of its life time,when its scrap realizes a sum of Rs. 34,000 only.The price of the new model is estimated to be 30% more than the price of the present one.What amount should be put into the sinking fund at the end of each year,if it accumulates at 4% per annum compound interest?(Take $(1.04)^{10}=1.480$).
isc
class12
modelpaper
2009
sec-c
q15
15-b
asked
Apr 15, 2013
by
sreemathi.v
0
answers
Calculate the index number for the year 2006 with 1996 as the base year by the weighted average of price relatives method from the following data.
isc
class12
modelpaper
2009
sec-c
q15
q15-a
asked
Apr 15, 2013
by
sreemathi.v
0
answers
Consider the following data :
isc
class12
modelpaper
2010
sec-c
q15
q15-b
asked
Apr 12, 2013
by
sreemathi.v
0
answers
The index number for the following data,for the year 2008,taking 2004 as base year was found to be 116.The simple aggregate method was used for calculation.Find the numerical values of x and y if the sum of the prices in the year 2008 is Rs. 203.
isc
class12
modelpaper
2010
sec-c
q15
q15-a
asked
Apr 12, 2013
by
sreemathi.v
0
answers
The profit of a soft drink firm (in thousands of rupees) during each month of the year is as given below :
isc
class12
modelpaper
2011
sec-c
q15
q15-b
asked
Apr 11, 2013
by
sreemathi.v
0
answers
The price quotations of four different commodities for 2001 and 2009 are as given below.Calculate the index number for 2009 with 2001 as the base year by using weighted average of price relative method.
isc
class12
modelpaper
2011
sec-c
q15
q15-a
asked
Apr 11, 2013
by
sreemathi.v
0
answers
Calculate the 5 yearly moving averages of the number of students in a college from the following data and plot them on a graph paper :
isc
class12
modelpaper
2012
sec-c
q15
q15-b
asked
Apr 11, 2013
by
sreemathi.v
0
answers
Find the consumer price index number for the year 2010 using year 2000 as the base year by using method of weighted aggregates :
isc
class12
modelpaper
2012
sec-c
q15
q15-a
asked
Apr 10, 2013
by
sreemathi.v
0
answers
Find the cartesian form of following planes: $\overrightarrow{r}=(1+s+t) \overrightarrow{i}+(2-s+t)\overrightarrow{j}+(3-2s+2t)\overrightarrow{k}$
tnstate
class12
bookproblem
ch2
sec-1
p112
exercise2-8
q15
q15-2
asked
Apr 8, 2013
by
poojasapani_1
1
answer
Find the cartesian form of following planes:$ \overrightarrow{r}=(s-2t) \overrightarrow{i}+(3-t)\overrightarrow{j}+(2s+t)\overrightarrow{k}$
tnstate
class12
bookproblem
ch2
sec-1
exercise2-8
p112
q15
q15-1
asked
Apr 8, 2013
by
poojasapani_1
1
answer
Find the vector equation of the plane through the points (2,1,-1) and (-1,3,4) and perpendicular to the plane x-2y+4z=10.
cbse
class12
modelpaper
2013
sec-b
q21
q21-2
65-1
q17
q17-2
65-2
q15
q15-2
65-3
math
asked
Mar 20, 2013
by
sreemathi.v
1
answer
Show that the lines $\begin{array}{1 1}\overrightarrow{r}=3\hat{i}+2\hat{j}-4\hat{k}+\lambda(\hat{i}+2\hat{j}+2\hat{k});\\\overrightarrow{r}=5\hat{i}-2\hat{j}+\mu(3\hat{i}+2\hat{j}+6\hat{k})\end{array} $ are intersecting. Hence find their point of intersection.
cbse
class12
modelpaper
2013
sec-b
q21
q21-1
65-1
q17
q17-1
65-2
q15
q15-1
65-3
math
asked
Mar 20, 2013
by
sreemathi.v
1
answer
Differentiate the following with respect to $x: \sin^{-1}\bigg(\large \frac{2^{x+1}.3^x}{1+(36)^x}\bigg)$
cbse
class12
modelpaper
2013
sec-b
q15
65-1
q11
65-2
65-3
math
asked
Mar 20, 2013
by
sreemathi.v
1
answer
Consider $( f:R_+ \to [4,\infty)$ given by $(f(x)=x^2 +4)$. Show that $(f)$ is invertible with the inverse $(f^{-1})$ of $(f)$ given by $(f^{-1}(y) = \sqrt {y-4})$,where $R_+$ is the set of all non-negative real numbers.
cbse
class12
modelpaper
2013
sec-b
medium
q11
65-1
q15
65-2
q18
65-3
math
asked
Mar 20, 2013
by
sreemathi.v
1
answer
Find the particular solution, satisfying the given condition, for the following differential equation : $\large \frac{dy}{dx}-\frac{y}{x}$$+cosec \bigg( \large\frac{y}{x} \bigg)$$=0; y=0\: when \: x = 1$
cbse
class12
modelpaper
2012
sec-b
q15
medium
math
asked
Feb 17, 2013
by
thanvigandhi_1
1
answer
If $ f(x)=\sqrt{\large\frac{\sec x-1}{\sec x+1}}$$\: find\: f'(x). $ Also find $( f' \bigg( \large\frac{\pi}{2}\bigg).)$
cbse
class12
modelpaper
2012
sec-b
q15
difficult
math
asked
Feb 15, 2013
by
thanvigandhi_1
1
answer
If \( x\sqrt{1+y}+y\sqrt{1+x}=0\:, find \: \large\frac{dy}{dx}\)
cbse
class12
modelpaper
2012
sec-b
q15
easy
math
asked
Feb 15, 2013
by
thanvigandhi_1
1
answer
If \( y = 3\cos (\log\: x)+4\sin (\log\: x),\) show that $ x^2\large\frac{d^2y}{dx^2}$$+x\large\frac{dy}{dx}$$+y=0$
cbse
class12
modelpaper
2012
sec-b
q15
easy
math
asked
Feb 11, 2013
by
thanvigandhi_1
1
answer
If \( y=x^{sin\: x}+(log\:x)^x,\: find\: \large\frac{dy}{dx}.\)
cbse
class12
modelpaper
2012
sec-b
q15
medium
math
asked
Feb 11, 2013
by
thanvigandhi_1
1
answer
If \( y= [ x + \sqrt{x^2+a^2}]^n. \) then prove that : $\large\frac{dy}{dx}=\frac{ny}{\sqrt{x^2+a^2}}$
cbse
class12
modelpaper
2012
sec-b
q15
medium
math
asked
Feb 9, 2013
by
thanvigandhi_1
1
answer
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