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Recent questions tagged q40
Questions
Preeti reached the metro station and found that the escalator was not working. She walked up the stationary escalator in time $t_1$. On other days, if she remains stationary on the moving escalator, then the escalator takes her up in time $t_2$. The time taken by her to walk up on the moving escalator will be
neet
2017
physics
past paper
t1
q40
asked
Oct 31, 2017
by
meena.p
1
answer
Electric field at the equator of a dipole is E. If strength and distance is now doubled then the electric field will be :
neet
1998
physics
past paper
t1
q40
asked
Oct 10, 2017
by
priyanka.c
0
answers
A uniform magnetic field of $1.5 \;T$ exists a cylindrical region $10.0 \;cm$ its direction parallel to the axis along east to west. A wire carrying current of $7.0 \;A$ in the north to south direction passes through this region . What is the magnitude and direction of the force of the wire is the wire intended the axis ?
cbse
class12
physics
ch-4
sec-b
q40
ncert
difficult
asked
Jul 28, 2015
by
meena.p
1
answer
The hysteresis loop of a soft iron piece has a much smaller are than that of a carbon steel piece . If the material is to go through repeated cycle of magnetization , Which piece will dissipate greater heat energy ?
cbse
class12
physics
ch-5
sec-a
q40
ncert
easy
asked
Jul 14, 2015
by
meena.p
1
answer
Resistance of a human body is of the order of $10 \;k \Omega$ . Why does one experience a strong wire of say $240\;V$ supply ?
cbse
class12
physics
ch-3
sec-a
q40
difficult
asked
Jun 30, 2015
by
meena.p
1
answer
You are given three uncharged spherical conductors A,B, and C touching each other . A glass rod carrying positive charge is brought near sphere A as shown. What will be the charges on spheres A,B and C?
cbse
class12
physics
ch-1
sec-a
q40
medium
asked
Apr 24, 2015
by
meena.p
1
answer
State whether the following statement is True or False : The locus of the point of intersection of lines $\sqrt 3x-y-4\sqrt 3k=0$ and $\sqrt 3kx+ky-4\sqrt 3=0$ for different value of $k$ is a hyperbola whose eccentricity is 2.
cbse
class11
math
conic-sections
hyperbola
exemplar
sec-a
medium
q40
asked
Oct 15, 2014
by
sreemathi.v
1
answer
A 6.90 M solution of KOH in water contains 30% by mass of KOH.Calculate the density of the KOH solution ?[Molar mass of KOH=$56g mol^{-1}$]
cbse
class12
chemistry
ch2
solutions
sec-b
medium
additionalproblem
q40
asked
Aug 8, 2014
by
sreemathi.v
1
answer
How many unit cells are present in a cube-shaped ideal crystal of NaCl of mass 1.00g.
cbse
class12
chemistry
ch1
states-of-matter
solid-state
sec-b
easy
additionalproblem
q40
asked
Aug 4, 2014
by
sreemathi.v
1
answer
Hot concentrated $H_2SO_4$ reacts with
jeemain
chemistry
inorganic-chemistry
class12
ch8
d-and-f-block-elements
important-compounds
medium
q40
asked
Jul 31, 2014
by
thanvigandhi_1
1
answer
Which of the following statements regarding aluminium is not correct ?
jeemain
chemistry
inorganic-chemistry
class11
ch11
p-block-elements
group-13
boron-family
medium
q40
asked
Jul 28, 2014
by
thanvigandhi_1
1
answer
If A and B are two events associated with a random experiment such that $P(A)=0.3,P(B)=0.2$ and $P(A \cap B)=0.1$ then the value of $P(A \cap \bar{B})$ is _________
cbse
math
class11
ch16
probability
exemplar
q40
sec-a
easy
asked
Jul 9, 2014
by
sreemathi.v
1
answer
Coefficient of variation $= \large\frac{----------}{mean} $$\times 100 $
cbse
math
class11
ch15
statistics
exemplar
q40
sec-a
easy
asked
Jul 9, 2014
by
meena.p
1
answer
Choose the correct answer from the given four options. The ratio in which the line $3x + 4y + 2 = 0$ divides the distance between the lines $3x + 4y + 5 = 0$ and $3x + 4y – 5 = 0$ is
cbse
math
class11
ch10
straight-lines
exemplar
objective-type-question
sec-a
medium
q40
asked
Jul 6, 2014
by
thanvigandhi_1
1
answer
True or False :Number of terms in the expansion of $(a+b)^n$ where $n\in N$ is one less than the power $n$.
cbse
math
class11
ch8
binomial-theorem
exemplar
q40
sec-a
easy
asked
Jun 25, 2014
by
sreemathi.v
1
answer
9 balls are to be placed in 9 boxes and 5 of the balls cannot fit into 3 small boxes.The number of ways of arranging one ball in each of the boxes is
cbse
math
class11
ch7
permutations-and-combinations
additionalproblem
q40
sec-c
difficult
asked
Jun 20, 2014
by
sreemathi.v
1
answer
Given 5 different green dyes ,four different blue dyes and three different red dyes,the number of combinations of dyes which can be chosen taking at least one green and one blue dye is
cbse
math
class11
ch7
permutations-and-combinations
exercise7-3
exemplar
q40
sec-b
medium
asked
May 16, 2014
by
sreemathi.v
1
answer
If $\tan\alpha=\large\frac{m}{m+1}$$,\tan \beta=\large\frac{1}{2m+1}$,then $\alpha+\beta$ is equal to
cbse
math
class11
ch3
trigonometric-functions
exemplar
q40
sec-c
difficult
asked
Apr 21, 2014
by
sreemathi.v
1
answer
The integral $\large\int ($ $1+x- \large\frac{1}{x})$$e^{x+\large\frac{1}{x}}$$dx$ is equal to
jeemain
math
integral-calculus
jeemain-2014
q40
asked
Apr 6, 2014
by
balaji.thirumalai
0
answers
Lactose on hydrolysis yields
jeemain
aipmt
chemistry
biomolecules
organic-chemistry
cbse
class12
unit16
medium
q40
asked
Mar 28, 2014
by
thanvigandhi_1
1
answer
Toluene is nitrated and the resulting product is reduced with tin and $ HCl$. The product so obtained is diazotized and then treated with cuprous bromide. The reaction mixture so formed contains
jeemain
aipmt
chemistry
nitrogen
organic-chemistry
cbse
class12
unit13
q40
medium
asked
Mar 26, 2014
by
thanvigandhi_1
1
answer
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