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Recent questions tagged q50
Questions
Which is the incorrect statement ?
neet
2017
physics
past paper
t1
q50
asked
Nov 2, 2017
by
meena.p
0
answers
A particle, with restoring force proportional to displacement and resisting force proportional to velocity is subjected to a force $F \sin ωt$. If the amplitude of the particle is maximum for $ω = ω_1$ and the energy of the particle maximum for $ω = ω_2$, then :
neet
1998
physics
past paper
t1
q50
asked
Oct 10, 2017
by
priyanka.c
0
answers
A circular coil of 20 turns and radius $10\;cm$ is placed in a uniform magnetic field of $0.10\;T$ normal to the plane of the coil. If the current in the coil is $5.0 \;A$ What is the total force on the coil ?
cbse
class12
physics
ch-4
sec-b
q50
ncert
medium
asked
Jul 28, 2015
by
meena.p
1
answer
A mono energetic $(18\;kev)$ electron beam initially in the horizontal direction is subjected to a horizontal magnetic field of $0.4\;G$ normal to the initial direction . Estimate the up or down deflection of the beam over a distance of $30\;cm(m_e=9.11 \times 10^{-19}\;c)$
cbse
class12
physics
ch-5
sec-a
q50
ncert
medium
asked
Jul 15, 2015
by
meena.p
1
answer
A current in a circuit having constant resistance is tripled. How does this affect the power dissipation ?
cbse
class12
physics
ch-3
sec-a
q50
medium
asked
Jun 30, 2015
by
meena.p
1
answer
This figure represents the electric lines of force at constant potentials, Shown in constant,Potentials, shown in bracket . At which point A , B and C is the electric field maximum ?
cbse
class12
physics
ch-1
sec-a
q50
difficult
asked
Apr 24, 2015
by
meena.p
1
answer
The equation of a circle with origin as centre and passing through the vertices of an equilateral triangle whose median is of length $3a$ is
cbse
class11
math
conic-sections
circle
exemplar
sec-a
easy
q50
asked
Oct 16, 2014
by
sreemathi.v
1
answer
Calculate the mole fraction of ethylene glycol $(C_2H_6O_2)$ in a solution containing 20% of $C_2H_6O_2$ by mass.
cbse
class12
chemistry
ch2
solutions
sec-c
medium
additionalproblem
q50
asked
Aug 8, 2014
by
sreemathi.v
1
answer
Which of the following alloys of copper does not contain tin ?
jeemain
chemistry
inorganic-chemistry
class12
ch8
d-and-f-block-elements
important-compounds
medium
q50
asked
Jul 31, 2014
by
thanvigandhi_1
1
answer
Calculate the mean deviation about the mean of the set of first n natural numbers where numbers where n is an even number.
cbse
math
class11
ch15
statistics
exemplar
q50
sec-b
medium
asked
Jul 9, 2014
by
meena.p
1
answer
State whether the following statement is true or false and justify : Equation of the line passing through the point $(a \cos^3 \theta, a \sin^3 \theta)$ and perpendicular to the line $x \sec \theta + y \: cosec \theta = a $ is $ x \cos \theta - y \sin \theta = a \sin 2 \theta $
cbse
math
class11
ch10
straight-lines
exemplar
sec-a
easy
q50
asked
Jul 8, 2014
by
thanvigandhi_1
1
answer
How many 10 digit numbers can be written using digits (9 and 2) ?
cbse
math
class11
ch7
permutations-and-combinations
additionalproblem
q50
sec-a
easy
asked
Jun 20, 2014
by
sreemathi.v
1
answer
A box contain 2 white balls,3 black balls and 4 red balls.The number of ways three balls be drawn from the box if at least one black ball is to be included in the draw is
cbse
math
class11
ch7
permutations-and-combinations
exercise7-3
exemplar
q50
sec-b
medium
asked
May 16, 2014
by
sreemathi.v
1
answer
If $\sin \theta+\cos \theta=1$,then the value of $\sin 2\theta$ is equal to
cbse
math
class11
ch3
trigonometric-functions
exemplar
q50
sec-b
medium
asked
Apr 21, 2014
by
sreemathi.v
1
answer
The area of the region described by A={$(x,y):(x^2+y^2\leq 1$ and $y^2\leq 1-x$}
jeemain
jeemain-2014
math
q50
medium
asked
Apr 7, 2014
by
sreemathi.v
1
answer
With which of the following disease is Vitamin K associated?
jeemain
aipmt
chemistry
biomolecules
organic-chemistry
cbse
class12
unit16
medium
q50
asked
Mar 28, 2014
by
thanvigandhi_1
1
answer
The impurities associated with minerals used in metallurgy are called collectively?
jeemain
cbse
chemistry
class12
unit6
general-principals-and-processes-of-isolation-of-metals
q50
difficult
asked
Mar 17, 2014
by
meena.p
2
answers
Given that $C+O_2 \rightarrow CO_2;\: \: \: \: \: \Delta H^{\circ} = -x\: kJ\: and\: 2CO+O_2 \rightarrow 2CO_2; \: \: \: \: \:\Delta H^{\circ} = -y\: kJ$ \[\] The standard enthalpy of formation of carbon monoxide is
jeemain
physics
thermodynamics
cbse
class11
class12
q50
medium
asked
Mar 17, 2014
by
thanvigandhi_1
1
answer
Which of the following statements is correct regarding free radical polymerisation?
jeemain
aipmt
chemistry
cbse
unit5
class12
organic-chemistry-polymers
q50
medium
asked
Mar 11, 2014
by
thanvigandhi_1
1
answer
Among the following molecules,the dipolemoment is the lowest for
jeemain
chemistry
physical-chemistry
class11
unit4
chemical-bonding-and-molecular-structure
valence-bond-theory
q50
medium
asked
Mar 6, 2014
by
sreemathi.v
1
answer
Which one of the following is the least stable compound?
jeemain
chemistry
physical-chemistry
class11
unit4
chemical-bonding-and-molecular-structure
kossel-lewis-approach-to-chemical-bonding
q50
easy
asked
Mar 5, 2014
by
sreemathi.v
1
answer
In the below reaction the product is
jeemain
chemistry
unit13
class12
organic-chemistry
nitrogen
amines
q50
difficult
asked
Mar 4, 2014
by
sreemathi.v
1
answer
In the following carbocation, $H/CH_3$ that most likely to migrate to the positively charged carbon is .
jeemain
chemistry
class11
organic-chemistry
q50
difficult
basic-organic-chemistry
ch12
asked
Feb 24, 2014
by
meena.p
1
answer
A negatively and uniformly charged disk is rotating in a clockwise direction as viewed from above. The direction of magnetic field at a point A is
jeemain
aipmt
physics
cbse
class12
ch4
ch5
magnetic-effects-of-current-and-magnetism
q50
difficult
asked
Feb 21, 2014
by
thanvigandhi_1
1
answer
The appropriate reagents for the following transformation:
jeemain
chemistry
unit11
unit12
class12
organic-chemistry
oxygen
aldehyde-and-ketones
q50
medium
asked
Feb 21, 2014
by
sreemathi.v
1
answer
Solution of differential equation $\large\frac{dy}{dx} +\frac{y}{x}$$=x^3 y^5$ is which of the following?
jeemain
math
class12
ch9
differential-equations
formation-of-differential-equations
q50
medium
asked
Feb 5, 2014
by
meena.p
1
answer
Find the equation of straight line touching both $x^2+y^2=2$ and $y^2=8x$.
jeemain
math
class11
coordinate-geometry-conic -sections
parabola
ch11
q50
medium
asked
Feb 5, 2014
by
sreemathi.v
1
answer
One mole of the complex compound $CO(NH_3)_5Cl_3$ gives 3 moles of ions on dissolution in water.On a mole of the same complex reacts with 2 moles of $AgNO_3$ solution to yield 2 moles of $AgCl(s)$.The structure of complex is
jeemain
chemistry
class12
coordination-compounds
unit9
q50
medium
sec-c
asked
Feb 3, 2014
by
sreemathi.v
1
answer
If SD of $X$ is $ \sigma $ then SD of $ \large\frac{aX+b}{c}$ ( where $a,b,c$ are constants ) is
jeemain
math
cbse
class11
statistics
variance-and-standard-deviation
difficult
q50
asked
Feb 1, 2014
by
thanvigandhi_1
1
answer
In a bivariate data $ \Sigma x = 30\: \: \Sigma y = 400 \: \: \Sigma x^2=196 \: \: \Sigma xy = 850 \: \: n=10$ \[\] Find the regression coefficient of $y$ and $x$
jeemain
math
cbse
class11
statistics
analysis-of-frequency-distributions-(regression-coefficient)
medium
q50
asked
Jan 31, 2014
by
thanvigandhi_1
1
answer
When p end of P-n junction is connected to positive terminal of the battery and N end to negative terminal , the p-n junction behaves like
jeemain
physics
class12
unit19
ch14
q50
easy
semiconductor-electronics
concepts
asked
Jan 28, 2014
by
meena.p
1
answer
Consider the following reaction $6NaOH+3Cl_2\rightarrow 5NaCl+A+3H_2O$ what is the oxidation number of chlorine in "A"?
jeemain
chemistry
class11
s-block-elements
unit10
q50
medium
asked
Jan 28, 2014
by
sreemathi.v
1
answer
The volume strength of $1N-H_2O_2$ solution is
jeemain
chemistry
class11
hydrogen
unit9
q50
medium
asked
Jan 23, 2014
by
sreemathi.v
1
answer
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