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Recent questions tagged q13
ASK
Four bells rings at 6,7,8,9 seconds respectively all the bells rings together after how many seconds
cbse
class4
olympiad
math
t5
q13
asked
Oct 21, 2017
by
priyanka.c
0
answers
The ratio of wavelengths of the last line of Balmer series and the last line of Lyman series is
neet
2017
physics
past paper
t1
q13
asked
Oct 10, 2017
by
meena.p
0
answers
If the light of wavelength $\lambda$ is incident on metal surface, the ejected fastest electron has speed v. If the wavelength i changed to $\frac{3 \lambda}{4}$, the speed of the fastest emitted electron will be:
neet
1998
physics
past paper
t1
q13
asked
Oct 9, 2017
by
priyanka.c
0
answers
Jaya is measuring two line segments. The first line segment is 30 cm long. The second line segment is 500 mm long. How long are the line segments together? (answer in cm)
cbse
class4
olympiad
math
t4
q13
asked
Oct 2, 2017
by
priyanka.c
0
answers
Find out the total number of mathematical shapes in the following figure
cbse
class4
olympiad
math
t3
q13
asked
Sep 25, 2017
by
priyanka.c
0
answers
Find the value of the following expression <br> (59856 – 24632)+(57864 – 34231) <br> 35224 +23633
cbse
class4
olympiad
math
t2
q13
asked
Sep 21, 2017
by
priyanka.c
0
answers
Find the value of following expression <br> DCCLXIII + CDXXXIX =
cbse
class4
olympiad
math
t1
q13
asked
Sep 18, 2017
by
priyanka.c
0
answers
olympiad
cbse
class3
math
t4
q13
asked
Sep 7, 2017
by
priyanka.c
0
answers
If $'+'$ means $'\times',\; '-' $ means $\;'÷'\; '\times'$ means c asscxx $'-'$ and $' '$ means $'+'$, then $9 + 8 ÷ 8 - 4 \times 9 = ?$
olympiad
cbse
class3
math
t5
q13
asked
Sep 1, 2017
by
priyanka.c
0
answers
Write the following expression in expanded from 34879 + 5480 = 40,359
olympiad
cbse
class3
math
t3
q13
asked
Aug 16, 2017
by
priyanka.c
0
answers
Naren had 46 balloons. 12 balloons were filled with water and 7 balloon were filled with some color papers in that. What is the number of balloons left out?
olympiad
cbse
class3
math
t2
q13
asked
Aug 4, 2017
by
priyanka.c
0
answers
Harini need 3 meters cloth to stitch her dress. But Sanjay need only 2 meters. The cloth is available to stitch 6 dresses for Sanjay. Then how many dresses can be stitched by Harini by this cloth?
olympiad
cbsc
class3
math
t1
q13
asked
Aug 4, 2017
by
priyanka.c
0
answers
A closely ward solenoid $80\;cm$ long has $ 5$ layers of winding of 400 turns each.The diameter of the solenoid is $1.8 \;cm$ . If the current carried is $8.0\;A$ , estimate the magnitude of B inside the solenoid near its center .
cbse
class12
physics
ch-4
sec-b
q13
ncert
difficult
asked
Jul 23, 2015
by
meena.p
1
answer
Two long and parallel straight wires A and B carrying currents of $8.0\;A$ and $5.0 \;A$ same direction are separated by a distance of $4.0\;cm$ . Estimate the force on a $10\;cm$ section of wire A?
cbse
class12
physics
ch-4
sec-b
q13
ncert
easy
asked
Jul 23, 2015
by
meena.p
1
answer
A short bar magnet with its axis at $30^{\circ}$ with a uniform external magnetic field of $0.25\;T$ experiences a forque a magnitude equal to $4.5 \times 10^{-2}\;J$ What is the magnitude of magnetic moment of the magnet?
cbse
class12
physics
ch-5
sec-a
q13
ncert
medium
asked
Jul 10, 2015
by
meena.p
1
answer
Alloys of metals have greater / lesser resistivity than that of their constituent metal?
cbse
class12
physics
ch-3
sec-a
q13
easy
asked
Jun 29, 2015
by
meena.p
1
answer
What is the change on $Cu^{++}$
cbse
class12
physics
ch-1
sec-a
q13
medium
asked
Apr 21, 2015
by
meena.p
1
answer
If the eccentricity of an ellipse is $\large\frac{5}{8}$ and the distance between its foci is 10, then find latus rectum of the ellipse.
cbse
class11
math
conic-sections
ellipse
exemplar
sec-b
medium
q13
asked
Oct 9, 2014
by
sreemathi.v
1
answer
The freezing point of 0.02mole fraction solution of acetic acid in benzene is 277.4K.Assuming molality equal to molarity,calculate $K_c$ for the equilibrium reaction $2CH_3COOH \;\;\leftrightharpoons\;\;(CH_3COOH)_2$.
cbse
class12
chemistry
ch2
solutions
sec-c
difficult
additionalproblem
q13
asked
Aug 6, 2014
by
sreemathi.v
1
answer
How many liters of water will have to be added to $1125$ liters of the $45\%$ solution of acid so that the resulting mixture will contain more than $25 \%$ but less than $30\%$ acid content ?
cbse
math
class11
ch6
linear-inequalities
misc
q13
asked
Aug 5, 2014
by
meena.p
1
answer
The unit cell in a crystal of diamond belongs to a cubic crystal system but doesn't correspond to the Bravais lattice.The volume of unit cell of diamond is $0.0454nm^3$ and the density of diamond is $3.52g/cc$.Find the number of carbon atoms in a unit cell of diamond?
cbse
class12
chemistry
ch1
states-of-matter
solid-state
sec-b
medium
additionalproblem
q13
asked
Aug 1, 2014
by
sreemathi.v
1
answer
Solve the system of inequalities graphically $4x+3y \leq 60 ; y \geq 2x; x \geq 3 ; x,y \geq 0 $
cbse
math
class11
ch6
linear-inequalities
exercise6-3
q13
asked
Jul 31, 2014
by
meena.p
1
answer
Solve the inequality for real $x: 2(2x+3) -10 < 6(x-2)$
cbse
math
class11
ch6
linear-inequalities
exercise6-1
q13
asked
Jul 25, 2014
by
meena.p
1
answer
Which of the following facts regarding boron and silicon is not true ?
jeemain
chemistry
inorganic-chemistry
class11
ch11
p-block-elements
group-13
boron-family
medium
q13
asked
Jul 25, 2014
by
thanvigandhi_1
1
answer
Find the equations of the hyperbola satisfying the given conditions : Foci $(\pm 4, 0)$, the latus rectum is of length $12$
cbse
class11
ch11
conic-sections
bookproblem
sec-b
medium
exercise11-4
p262
q13
asked
Jul 21, 2014
by
thanvigandhi_1
1
answer
Find the equation for the ellipse that satisfies the given conditions : Ends of major axis $(\pm 3, 0)$ , ends of minor axis $(0, \pm 2)$
cbse
class11
ch11
conic-sections
bookproblem
sec-a
easy
exercise11-3
p255
q13
asked
Jul 18, 2014
by
thanvigandhi_1
1
answer
Find the equation of the circle passing through $(0,0)$ and making intercepts a and b on the coordinate axes.
cbse
class11
ch11
conic-sections
bookproblem
sec-c
difficult
exercise11-1
p241
q13
asked
Jul 13, 2014
by
thanvigandhi_1
1
answer
Mean and standard deviation of 100 items are 50 and 4 , respectively . find the sum of all items and sum of the squares of the items.
cbse
math
class11
ch15
statistics
exemplar
q13
sec-b
medium
asked
Jul 4, 2014
by
meena.p
1
answer
If the equation of the base of an equilateral triangle is x + y = 2 and the vertex is (2, – 1), then find the length of the side of the triangle \[\] [Hint: Find length of perpendicular (p) from (2, – 1) to the line and use $p = l \: \sin 60^{\circ}$, where $l$ is the length of side of the triangle]
cbse
math
class11
ch10
straight-lines
exemplar
long-answer-type-question
sec-b
medium
q13
asked
Jul 1, 2014
by
thanvigandhi_1
1
answer
The numbers 1,2,3 and 4 are written separately on four slips of paper.The slips are put in a box and mixed thoroughly.A person draws two slips from the box,one after the other,without replacement.Describe the sample space for the experiment
cbse
math
class11
ch16
probability
bookproblem
exercise16-1
q13
sec-a
easy
asked
Jun 26, 2014
by
sreemathi.v
1
answer
If the coefficient of $x^7$ in the expansion of $(a^2x+b^{-1}x^{-1})^{11}$ is equal to the coefficient of $x^{-7}$ in $(ax-b^{-1}x^{-2})^{11}$ then $ab=$
cbse
math
class11
ch8
binomial-theorem
additionalproblem
q13
sec-c
difficult
asked
Jun 25, 2014
by
sreemathi.v
1
answer
Show that the middle term in the expansion of $(x-\large\frac{1}{x})^{2n}$ is $\large\frac{1\times 3\times 5\times..... (2n-1)}{n!}$$\times (-2)^n$
cbse
math
class11
ch8
binomial-theorem
exemplar
q13
sec-c
difficult
asked
Jun 24, 2014
by
sreemathi.v
1
answer
Show that $9^{n+1}-8n-9$ is divisible by 64 whenever n is a positive integer.
cbse
math
class11
ch8
binomial-theorem
exercise8.1
q13
sec-c
difficult
asked
Jun 23, 2014
by
sreemathi.v
1
answer
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