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Recent questions tagged q17
Questions
One mole of diatomic ideal gas undergoes a cyclic process $ABC$ as shown in figure. The process $BC$ is adiabatic. The temperatures at $A, B\; and\; C$ are $400 K,800 K\; and\; 600 K$ respectively. Choose the correct statement.
jeemain
jeemain-2014
physics
q17
medium
asked
Apr 7, 2014
by
meena.p
1
answer
Evaluate the following limits $ \lim\limits_{ x \to 0} \large\frac{\cos\: 2x-1}{\cos\: x - 1}$
math
cbse
class11
ch13
limits-and-derivatives
bookproblem
limits
exercise13-1
p301-303
q17
asked
Apr 3, 2014
by
thanvigandhi_1
1
answer
If $a,b,c,d$ are in G.P. then show that $(a^n+b^n),(b^n+c^n),(c^n+d^n)$ are in G.P.
cbse
class11
ch9
bookproblem
sec-b
difficult
misc
q17
math
sequences-and-series
asked
Mar 31, 2014
by
rvidyagovindarajan_1
1
answer
Invert sugar is
jeemain
aipmt
chemistry
biomolecules
organic-chemistry
cbse
class12
unit16
easy
q17
asked
Mar 27, 2014
by
thanvigandhi_1
1
answer
If $x=a\:cos\theta+b\:sin\theta$ and $y=a\:sin\theta-b\:cos\theta$, then show that $y^2.\large\frac{d^2y}{dx^2}$$-x\large\frac{dy}{dx}$$+y=0$
cbse
class12
modelpaper-2014
65-2-3
sec-b
q17
math
asked
Mar 23, 2014
by
rvidyagovindarajan_1
1
answer
Objects at rest on earth's surface move in circular paths with a period of 24 hours. What should be the length of the day so that such objects experience weightlessness, so that they are in "true orbit"
jeemain
physics
class11
unit6
gravitation
q17
medium
asked
Mar 23, 2014
by
balaji.thirumalai
1
answer
Which of the following cannot couple with benzene diazonium chloride?
jeemain
aipmt
chemistry
nitrogen
organic-chemistry
cbse
class12
unit13
q17
medium
asked
Mar 21, 2014
by
thanvigandhi_1
1
answer
Both flotation process may be used to increase the concentration of the mineral in
jeemain
cbse
chemistry
class12
unit6
general-principals-and-processes-of-isolation-of-metals
q17
medium
asked
Mar 17, 2014
by
meena.p
1
answer
For a reversible process at equilibrium, the entropy change $ \Delta S$ is given by
jeemain
physics
thermodynamics
cbse
class11
class12
q17
easy
asked
Mar 15, 2014
by
thanvigandhi_1
1
answer
The molecule that will have dipolemoment is
jeemain
chemistry
physical-chemistry
class11
unit4
chemical-bonding-and-molecular-structure
bond-parameters
q17
difficult
asked
Mar 10, 2014
by
sreemathi.v
1
answer
Bakelite is obtained from phenol by reacting with
jeemain
aipmt
chemistry
cbse
unit5
class12
organic-chemistry
polymers
q17
easy
asked
Mar 6, 2014
by
thanvigandhi_1
1
answer
The structure of $O_3$ and $N_3^-$ are
jeemain
chemistry
physical-chemistry
class11
unit4
chemical-bonding-and-molecular-structure
vsepr(valence-shell-electron-pair-repulsion)theory
q17
easy
asked
Mar 4, 2014
by
sreemathi.v
1
answer
A compound X is formed when acetaldehyde condenses with ethyl amine.X on further catalytic hydrogenation $(H_2/Ni)$ will yield
jeemain
chemistry
unit13
class12
organic-chemistry
nitrogen
amines
q17
easy
asked
Feb 28, 2014
by
sreemathi.v
1
answer
If the $4^{th},10^{th}\:\;and\:\:16^{th}$ terms of a G.P. are $x,y\:\;and\:\:z$ respectively. Prove that $x,y,z$ are in G.P.
cbse
class11
ch9
bookproblem
exercise9-3
medium
sec-b
q17
math
sequences-and-series
asked
Feb 27, 2014
by
rvidyagovindarajan_1
1
answer
The amplitude of the magnetic field part of a harmonic electromagnetic wave in vacuum is $B_o = 510\: nT$. What is the amplitude o the electric field part of the wave?
jeemain
aipmt
physics
cbse
class12
ch8
electromagnetic-waves
q17
easy
asked
Feb 26, 2014
by
thanvigandhi_1
1
answer
A man starts repaying a loan as first installment of $Rs.100$. If he increases the installment by $Rs.5$ every month, what amount he will pay in his $30^{th}$ installment?
cbse
class11
ch9
bookproblem
exercise9-2
easy
sec-a
q17
math
sequences-and-series
asked
Feb 24, 2014
by
rvidyagovindarajan_1
1
answer
The number of stereoisomers obtained by bromiantion of trans-2-butene is
jeemain
chemistry
class11
organic-chemistry
q17
difficult
basic-organic-chemistry
ch12
asked
Feb 21, 2014
by
meena.p
1
answer
Which of the following compounds exhibit Fehling's test?
jeemain
chemistry
unit11
unit12
class12
organic-chemistry
oxygen
aldehyde-and-ketones
q17
easy
asked
Feb 19, 2014
by
sreemathi.v
1
answer
The compressibility of gas is less than unity at S.T.P .Therefore
jeemain
chemistry
physical-chemistry
class11
unit5
states-of-matter
ideal-gas-equation
easy
q17
asked
Feb 13, 2014
by
sharmaaparna1
1
answer
Evaluate: $\large \int \limits_{-1}^1 $$x$ $ \left | x \right |$ $ dx$.
cl1124
cbse
class12
bookproblem
ch8
misc
q17
p376
sec-a
medium
math
asked
Feb 10, 2014
by
rvidyagovindarajan_1
1
answer
The vertices of a triangle are $A(10,4),B(-4,9)$ and $C(-2,-1)$.Find the equation of the altitude through A?
jeemain
math
class11
coordinate-geometry
straight-lines
slope-of-a-line
ch10
q17
medium
asked
Feb 4, 2014
by
sreemathi.v
1
answer
Let $g(n) $ is a continuous differential function which takes positive value for $ x \leq 0$ and satisfy $\int \limits_0^2 g(t) dt = x \sqrt {g(x)} $ with $f(1) =V_2$. find the value of $f(\sqrt 2 +1)$
jeemain
math
class12
ch9
differential-equations
homogeneous-differential-equations
q17
difficult
asked
Feb 3, 2014
by
meena.p
1
answer
A firm has to transport 1200 packages using large vans which can carry 200 packages each and small vans which can take 80 packages each.The cost for engaging each large van is Rs 400 and each small van is Rs 200.Not more than Rs 3000 is to be spent on the job and the number of large vans cannot exceed the number of small vans.What will be the minimum cost?
cbse
class12
ch12
q17
p253
exemplar
sec-c
difficult
math
asked
Feb 1, 2014
by
rvidyagovindarajan_1
1
answer
The oxidation state of chromium in complex $[Cr(NH_3)_4Cl_2]Cl$
jeemain
chemistry
class12
coordination-compounds
unit9
q17
easy
asked
Jan 31, 2014
by
sreemathi.v
1
answer
Zener breakdown occurs:
jeemain
physics
class12
unit19
ch14
q17
easy
junction-diodes
semiconductor-electronics
concepts
asked
Jan 27, 2014
by
meena.p
1
answer
Electronic configuration in the valency shell of barium is
jeemain
chemistry
class11
s-block-elements
unit10
q17
easy
asked
Jan 27, 2014
by
sreemathi.v
1
answer
A survey shows that 63% of the Americans like cheese whereas 76% like apples. The statement, “x% of Americans like both cheese and apples” is true for
jeemain
math
mathematical-reasoning
class11
ch14
difficult
statements
q17
asked
Jan 23, 2014
by
thanvigandhi_1
1
answer
Metal hydride on treatment with water gives:-
jeemain
chemistry
class11
hydrogen
unit9
q17
easy
asked
Jan 22, 2014
by
sreemathi.v
1
answer
What is the negation of: For every real number $x ,x \gt x+2$?
jeemain
math
mathematical-reasoning
class11
ch14
medium
implications-(tautology-contradiction.)
q17
asked
Jan 20, 2014
by
thanvigandhi_1
1
answer
Chemical oxygen is determined by using
jeemain
chemistry
class11
environmental-chemistry
unit14
q17
easy
asked
Jan 20, 2014
by
sreemathi.v
1
answer
What is the negation of the statement: 6 is irrational?
jeemain
math
mathematical-reasoning
class11
ch14
easy
statements
q17
asked
Jan 17, 2014
by
thanvigandhi_1
1
answer
The value of K for which function $ f(x) =\left\{ \begin{array}{l l} k\: e^{-3x} & \quad \text{ $x$ >0}\\ 0 & \quad \text{ elsewhere} \end{array} \right.$ is a Probability Distribution Function.
jeemain
math
cbse
class12
probability
difficult
q17
asked
Jan 15, 2014
by
thanvigandhi_1
1
answer
Suppose $10^{-17}J$ of light energy is needed by the interior of human eye to see an object .The photons of green light ($\lambda =550nm)$ needed to see the object are :
jeemain
chemistry
physical-chemistry
class11
unit2
atomic-structure
atomic- models-(rutherford-and-thomson)
q17
easy
asked
Jan 10, 2014
by
sreemathi.v
1
answer
A coin is tossed 7 times. The probability that he wins the toss on more occasions is
jeemain
math
cbse
class12
probability
bionomial-distribution
medium
q17
asked
Jan 9, 2014
by
thanvigandhi_1
1
answer
25ml of a solution of $Na_2CO_3$ having a specific gravity of $1.25ml^{-1}$ required 32.9ml of a solution of HCl containing 109.5g of the acid per litre for complete neutralization .Calculate the volume of 0.84N $H_2SO_4$ that will be completely neutralized by 125g of $Na_2CO_3$ solution.
jeemain
chemistry
physical-chemistry
class11
unit1
some-basic-concepts-in-chemistry
stoichiometry
q17
difficult
asked
Jan 7, 2014
by
sreemathi.v
1
answer
A buys 3 tickets of a lottery in which total number of tickets is 12 out of which 3 carry prizes on them. A's chance of getting a prize is ;
jeemain
math
cbse
class11
probability
random-experiements
easy
q17
asked
Jan 2, 2014
by
thanvigandhi_1
1
answer
If $a^2,b^2,c^2\;$ are in AP ,$\frac{1}{b+c},\frac{1}{a+c},\frac{1}{b+a}\;$ are in
jeemain
math
class11
ch9
sequences-and-series
easy
arithmetic-progression
q17
asked
Dec 31, 2013
by
yamini.v
1
answer
If $P(3,2,6)$ is a point and $Q$ is a point on the line $\overrightarrow r=(\hat i-\hat j+2\hat k)+\lambda(-3\hat i+\hat j+5\hat k),$ then the value of $\lambda$ for which $\overrightarrow {PQ}$ is parallel to the plane $x-4y+3z=1$ is ?
jeemain
math
class12
ch11
3d-geometry
intersection-of-lines-and-planes
medium
q17
asked
Dec 27, 2013
by
rvidyagovindarajan_1
1
answer
Let $f(x)=4$ and $f'(x)=4$. Then $\lim\limits_{x\to 2}\large\frac{xf(2)-2f(x)}{x-2}$ is given by
jeemain
math
class11
ch13
limits-and-derivatives
introduction to limits
easy
q17
asked
Dec 20, 2013
by
sreemathi.v
1
answer
Two simple Harmonic motions of angular frequency 100 and 1000 rads$^{-1}$ have the same displacement amplitude. The ratio of their maximum acceleration is :
aipmt
modelpaper
physics
2008
q17
asked
Dec 15, 2013
by
thanvigandhi_1
1
answer
Integrate : $ \int \limits_0^{\large\frac{\pi}{2}} min ^m \{ \tan x , \cot x \} dx$
jeemain
math
class12
ch7
integral-calculus
integration-using-partial-fractions
easy
q17
asked
Dec 13, 2013
by
meena.p
1
answer
The correct cell reaction for given cell is $Sn/Sn^{+2}\parallel Ag^+/Ag$
jeemain
chemistry
unit8
redox-reactions-and-electrochemistry
q17
easy
asked
Dec 10, 2013
by
sreemathi.v
1
answer
Which element has highest electronegativity ?
jeemain
chemistry
physical-chemistry
class11
unit4
chemical-bonding-and-molecular-structure
vsepr(valence-shell-electron-pair-repulsion)theory
q17
medium
asked
Dec 9, 2013
by
sreemathi.v
1
answer
Clay particles are :
jeemain
eamcet
biology
2002
q17
asked
Dec 6, 2013
by
thanvigandhi_1
0
answers
Which of the following alkene is most reactive towards epoxidation with MCPBA (meta chloro per benzoic acid)
jeemain
chemistry
unit21
organic-chemistry
q17
difficult
basic-organic-chemistry
class11
ch12
asked
Dec 4, 2013
by
sreemathi.v
1
answer
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