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Recent questions tagged q27
Questions
General solution of differential equations: $\large\frac{dy}{dx}$$=e^{3x-2y}+x^2e^{-2y}$
jeemain
math
class12
ch9
differential-equations
solving-using-separation-of-variables
q27
easy
asked
Feb 4, 2014
by
meena.p
1
answer
A reduction in atomic size with increase in atomic number is a characterstic of elements of
jeemain
chemistry
class12
coordination-compounds
unit9
q27
medium
asked
Jan 31, 2014
by
sreemathi.v
1
answer
In the given diagram resistance of each diode in forward bias is zero and infinity in reverse bias . If a 2V battery is connected as shown in circuit What is the effective current.
jeemain
physics
class12
unit19
ch14
q27
medium
junction-diodes
semiconductor-electronics
asked
Jan 27, 2014
by
meena.p
1
answer
Anhydrone is a common name given to :
jeemain
chemistry
class11
s-block-elements
unit10
q27
easy
asked
Jan 27, 2014
by
sreemathi.v
1
answer
The A.M of $n$ observation is $ \overline x$ . If the sum of $ n-5$ observations is $a$, then the mean of remaining 5 observation is
jeemain
math
cbse
class11
statistics
difficult
measures-of-dispersion-(a.m)
q27
asked
Jan 25, 2014
by
thanvigandhi_1
1
answer
The A.M of first $n$ natural number is
jeemain
math
cbse
class11
statistics
medium
measures-of-dispersion-(a.m)
q27
asked
Jan 25, 2014
by
thanvigandhi_1
1
answer
$ ^{\sim}(p V q)$ is equivalent to
jeemain
math
mathematical-reasoning
class11
ch14
difficult
implications-(tautology-contradiction.)
q27
asked
Jan 24, 2014
by
thanvigandhi_1
1
answer
$H_2O_2$ reduces $K_3[Fe(CN)_6]$ in
jeemain
chemistry
class11
hydrogen
unit9
q27
easy
asked
Jan 23, 2014
by
sreemathi.v
1
answer
Given the following statement: All doors are windows. Some windows are clips. Now, consider the claims: C1 :Some clips, if they are doors, they are also windows C2: All clips which are not widows are also not doors. Now, mark according to the rules - \[\] i) Mark A if C1 is true, ii) Mark B if C2 is true,iii) Mark C if neither C1 nor C2 is true and iv) Mark D if both C1 and C2 are true.
jeemain
math
mathematical-reasoning
class11
unit14
easy
q27
asked
Jan 21, 2014
by
thanvigandhi_1
1
answer
Which of the following statements do not convey the same meaning as, If a natural number is even then its square is also even?
jeemain
math
mathematical-reasoning
class11
ch14
medium
statements
q27
asked
Jan 20, 2014
by
thanvigandhi_1
1
answer
Acid rain contains
jeemain
chemistry
class11
environmental-chemistry
unit14
q27
easy
asked
Jan 20, 2014
by
sreemathi.v
1
answer
The number of d-electrons present in $Fe^{2+}$ is
jeemain
chemistry
physical-chemistry
class11
unit2
atomic-structure
quantum-mechanical-model
q27
easy
asked
Jan 10, 2014
by
sreemathi.v
1
answer
$2.0g$ of a mixture of carbonate ,bicarbonate and chloride of sodium on heating produced 56ml of $CO_2$ at NTP 1.6g of the same mixture required 25ml of 1N HCl solution for neutralization.Calculate percentage of each component present in mixture
jeemain
chemistry
physical-chemistry
class11
unit1
some-basic-concepts-in-chemistry
percentage-composition
q27
difficult
asked
Jan 7, 2014
by
sreemathi.v
1
answer
A fair coin is tossed 100 times. The probability of getting tails on odd number of times is
jeemain
math
cbse
class12
probability
bionomial-distribution
easy
q27
asked
Jan 6, 2014
by
thanvigandhi_1
1
answer
In a triangle $\bigtriangleup ABC$,a,b,c are its sides ,A,B $\xi\;$ C are its angles, if $\cot A,\cot B\;\xi\;\cot C$ are in AP , the a,b, and c are in which progression?
jeemain
math
class11
ch9
sequences-and-series
easy
arithmetic-progression
q27
asked
Jan 2, 2014
by
yamini.v
1
answer
If the equation of the plane containing the line $\large\frac{x-x_1}{l}=\frac{y-y_1}{m}=\frac{z-z_1}{n}$ is $a(x-x_1)+b(y-y_1)+c(z-z_1)=0$, then ?
jeemain
math
class12
ch11
3d-geometry
equations-of-planes
easy
q27
asked
Dec 29, 2013
by
rvidyagovindarajan_1
1
answer
$\lim\limits_{x\to 2}\big(\large\frac{\sqrt{1-\cos 2(x-2)}}{x-2}\big)$
jeemain
math
class11
ch11
limits and derivatives
limits on trigonometric functions
easy
q27
asked
Dec 23, 2013
by
sreemathi.v
1
answer
The electric potential at a point in free space due to a charge Q coulomb is $ Q \times 10^{11}$ volts. The electric field at that point is :
aipmt
modelpaper
physics
2008
q27
asked
Dec 15, 2013
by
thanvigandhi_1
0
answers
Integrate : $ \int \limits_3^5 \large\frac{\sqrt {\log (x)}}{\log (\theta- x)+ \log (x)}$$dx$
jeemain
math
class12
ch7
integral-calculus
integration-using-partial-fractions
easy
q27
asked
Dec 13, 2013
by
meena.p
1
answer
For hydrogen concentration cell in working condition ,the correct relation is
jeemain
chemistry
unit8
redox-reactions-and-electrochemistry
q27
difficult
asked
Dec 11, 2013
by
sreemathi.v
1
answer
Match the correct formula and shape of the central atom. Which pair is correct?
jeemain
chemistry
physical-chemistry
class11
unit4
chemical-bonding-and-molecular-structure
vsepr(valence-shell-electron-pair-repulsion)theory
q27
medium
asked
Dec 9, 2013
by
sreemathi.v
1
answer
The microelement required for the synthesis of IAA is represented in its ionic form as a cofactor in this enzyme :
jeemain
eamcet
biology
2002
q27
asked
Dec 8, 2013
by
thanvigandhi_1
1
answer
What is the most likely product of the following reaction?
jeemain
chemistry
unit21
organic-chemistry
q27
difficult
basic-organic-chemistry
class11
ch12
asked
Dec 5, 2013
by
sreemathi.v
1
answer
Refer to the below reaction:
jeemain
chemistry
unit21
organic-chemistry
q27
medium
basic-organic-chemistry
class11
ch12
asked
Dec 3, 2013
by
sreemathi.v
1
answer
How many ATP molecules are formed in electron transport from the reduced nicotinamide adenine dinucleotides generated in one turn of Krebs cycle :
jeemain
eamcet
biology
2001
q27
asked
Dec 1, 2013
by
thanvigandhi_1
0
answers
Bleaching powder formulae
jeemain
chemistry
unit15
p-block-elements
q27
easy
sec-a
asked
Nov 27, 2013
by
sreemathi.v
1
answer
The ring like portion on the 'stipe of Agaricus basidiocarp is the ramnant of :
jeemain
eamcet
biology
2000
q27
asked
Nov 24, 2013
by
thanvigandhi_1
0
answers
Which of the following pathogens do NOT cause smut disease ?
jeemain
eamcet
biology
1999
q27
asked
Nov 23, 2013
by
thanvigandhi_1
0
answers
The number of $3\times 3$ matrices A whose entries are either 0 or 1 and for which the system $A=\begin{bmatrix}x\\y\\z\end{bmatrix}=\begin{bmatrix}1\\0\\0\end{bmatrix}$ has exactly two distinct solution is
jeemain
math
ch3
class12
matrices
q27
invertible-matrices
easy
asked
Nov 20, 2013
by
sreemathi.v
1
answer
Find all positive integral solutions of the equation $\tan^{-1}x+\cot^{-1}y=\tan^{-1}3$
jeemain
math
class12
ch2
inverse-trigonometric-functions
q27
inverse-trignometric-properties
difficult
asked
Nov 18, 2013
by
sreemathi.v
1
answer
$PCl_5(g) \rightleftharpoons PCl_3(g) + Cl_2 (g)$ In the dissociation of $PCl_5, x $ varies with $\frac{D}{d}$ according to:
jeemain
aipmt
chemistry
equilibrium
medium
q27
biology
asked
Nov 15, 2013
by
mosymeow_1
1
answer
$A+B=C=> \cos ^2 A +\cos ^2 B+\cos ^2 C- 2 \cos A \cos B \cos C $ is equal to :
jeemain
eamcet
math
2005
q27
asked
Nov 12, 2013
by
meena.p
1
answer
Study the following table and identify the correct sequence of cells which shows the path of water movement between them :
jeemain
eamcet
biology
2010
q27
asked
Nov 11, 2013
by
thanvigandhi_1
1
answer
Which of the following is not correct ?
jeemain
eamcet
chemistry
2005
q27
asked
Nov 11, 2013
by
meena.p
0
answers
If $\overrightarrow {OA}=\overrightarrow a,\:\overrightarrow {AB}=6\overrightarrow a+2\overrightarrow b\:and\:\overrightarrow {OC}=\overrightarrow b$, $p$ is area of quadrateral $OACB$ and $q$ is area of parallelogram with $OA$ and $OC$ as adjacent sides, and if $p=x.q$, then $x=?$
jeemain
math
class12
ch10
vector-algebra
difficult
vector-product
q27
asked
Nov 8, 2013
by
rvidyagovindarajan_1
1
answer
With a standard rectangular bar magnet of length (l), breath (b ; b < < l) and magnetic moment M, the time period of the magnet in a vibration magnetometer is 4 s. If the magnet is cut normal to its length into four equal pieces, the time period (in seconds) with one of the pieces is :
jeemain
eamcet
physics
2005
q27
asked
Nov 7, 2013
by
meena.p
1
answer
For all values of $\theta$, the values of $3- \cos \theta+ \cos \bigg(\theta+\large\frac{\pi}{3}\bigg)$ lie in the interval :
jeemain
eamcet
math
2006
q27
asked
Nov 6, 2013
by
meena.p
1
answer
What volume of water is required to make 0.2N solution from 1600ml of 0.205N solution ?
jeemain
chemistry
physical-chemistry
class11
unit1
some-basic-concepts-in-chemistry
stoichiometry
q27
easy
asked
Oct 31, 2013
by
sreemathi.v
1
answer
Match the following lists:
jeemain
eamcet
chemistry
2006
q27
asked
Oct 30, 2013
by
meena.p
1
answer
The effect due to uniform magnetic field on a freely suspended magnetic needle is as follows :
jeemain
eamcet
physics
2006
q27
asked
Oct 29, 2013
by
meena.p
1
answer
Study the following lists
jeemain
eamcet
biology
2011
q27
asked
Oct 26, 2013
by
thanvigandhi_1
1
answer
$\sin A+ \sin B= \sqrt {3} (\cos B- \cos A)$ => $\sin 3A+ \sin 3B$ is equal to
jeemain
eamcet
math
2007
q27
asked
Oct 24, 2013
by
meena.p
1
answer
A compound on analysis,was found to have the following composition :(i) Na=14.31% (ii) S=9.97% (iii) O=69.50% (iv) H=6.22%.Calculate the molecular formula of the compound assuming that whole of hydrogen in the compound is present as water of crystallization .Molecular mass of the compound is 322.
jeemain
chemistry
physical-chemistry
class11
unit1
some-basic-concepts-in-chemistry
percentage-composition
q27
medium
asked
Oct 24, 2013
by
sreemathi.v
1
answer
The maximum number of sub-levels, orbitals and electrons in N shell of an atom are respectively
jeemain
eamcet
chemistry
2007
q27
asked
Oct 24, 2013
by
meena.p
1
answer
A bar-magnet of moment of inertia $49 \times 10^{-2}$ vibrates in a magnetic field of induction $0.5 \times 10^{-4}T.$ The time period of vibration is $8.8 \;s$. The magnetic moment of the bar magnet is
jeemain
eamcet
physics
2007
q27
asked
Oct 22, 2013
by
meena.p
1
answer
If $\alpha +\beta+\gamma= 2\theta$, then $cos \theta+ \cos (\theta- \alpha)+ \cos (\theta- \beta)+ \cos (\theta- \gamma)=$
jeemain
eamcet
math
2008
q27
asked
Oct 17, 2013
by
meena.p
1
answer
A scientist took 8 molecules of cytosolic aldolase into an enzyme reaction mixture to study its activity. After ten minutes of enzyme reaction, 60% of its substrate was found converted into 2400 molecules of product. Then what is the TON of aldolase and number of substrate molecules left over in the reaction mixture?
jeemain
eamcet
biology
2012
q27
asked
Oct 16, 2013
by
thanvigandhi_1
1
answer
The maximum value of the expression $\large\frac{1}{\sin^2\theta+3\sin\theta\cos\theta+5\cos^2\theta}$ is
jeemain
math
class11
ch3
trigonometric-functions
q27
trignometric-equations
medium
asked
Oct 15, 2013
by
sreemathi.v
1
answer
$ \sin h^{-1} 2+ \sin h^{-1}3=x => \cos h\; x=$
jeemain
eamcet
math
2009
q27
asked
Oct 9, 2013
by
meena.p
1
answer
If $\sin x+\sin^2x=1$ then value of $\cos^2x+\cos^4x$ is equal to
jeemain
math
class11
ch3
trigonometric-functions
q27
trigonometric-identities
easy
asked
Oct 8, 2013
by
sreemathi.v
1
answer
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