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Recent questions tagged q26
Questions
$20\% N_2O_4$ molecules are dissociated in a sample of gas $27^{\large\circ}$ and 760 torr. Calculate the density of the equilibrium mixture.
jeemain
chemistry
physical-chemistry
class11
unit5
states-of-matter
ideal-gas-equation
easy
q26
asked
Feb 14, 2014
by
sharmaaparna1
1
answer
If p is the length of the perpendicular from the origin to the line $\large\frac{x}{a}+\frac{y}{6}$$=1$ then $\large\frac{1}{a^2}+\frac{1}{b^2}$=?
jeemain
math
class11
coordinate-geometry
straight-lines
distance-of-a-point-from-a-line
ch10
q26
medium
asked
Feb 4, 2014
by
sreemathi.v
1
answer
Differential equation of all circles radius 5, with their centres on the y-axis.
jeemain
math
class12
ch9
differential-equations
solving-using-separation-of-variables
q26
easy
asked
Feb 4, 2014
by
meena.p
1
answer
In the coordination compound,$K_4[Ni(CN)_4]$ the oxidation state of nickel is
jeemain
chemistry
class12
coordination-compounds
unit9
q26
medium
asked
Jan 31, 2014
by
sreemathi.v
1
answer
When a 10v battery is connected as shown in the circuit what is the potential difference across A and B ?
jeemain
physics
class12
unit19
ch14
q26
medium
junction-diodes
semiconductor-electronics
asked
Jan 27, 2014
by
meena.p
1
answer
Which of the following metal is used in the preparation of Grignard's reagent?
jeemain
chemistry
class11
s-block-elements
unit10
q26
easy
asked
Jan 27, 2014
by
sreemathi.v
1
answer
The average salary of male employees in a factory was Rs. 520 and that of females was Rs. 420. If mean salary of all employees is Rs. 500, the % of male employees is?
jeemain
math
cbse
class11
statistics
difficult
measures-of-dispersion-(mean)
q26
asked
Jan 25, 2014
by
thanvigandhi_1
1
answer
A batsman scores $ 38, 70, 48, 34, 42, 55, 63, 46, 54 \: and \: 44$ in 10 innings. Find his mean deviation from median.
jeemain
math
cbse
class11
statistics
medium
measures-of-dispersion-(mean-deviation)
q26
asked
Jan 25, 2014
by
thanvigandhi_1
1
answer
$ ^{\sim}(p \wedge q)$ is equivalent to
jeemain
math
mathematical-reasoning
class11
ch14
difficult
implications-(tautology-contradiction.)
q26
asked
Jan 24, 2014
by
thanvigandhi_1
1
answer
$H_2O_2\rightarrow 2H^++O_2+2e^-$.$E^{\large\circ}=-0.68v$.The given equation represents the following nature of $H_2O_2$
jeemain
chemistry
class11
hydrogen
unit9
q26
easy
asked
Jan 23, 2014
by
sreemathi.v
1
answer
Given the following statement: All doors are windows. Some windows are dips. Now, consider the claims: C1: Some clips are doors. C2: Some windows are 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
q26
asked
Jan 21, 2014
by
thanvigandhi_1
0
answers
Which of the following statements do not convey the same meaning as, If a triangle is equiangular then it is an obtuse angled triangle.?
jeemain
math
mathematical-reasoning
class11
ch14
medium
statements
q26
asked
Jan 20, 2014
by
thanvigandhi_1
1
answer
PH of acid rain may be
jeemain
chemistry
class11
environmental-chemistry
unit14
q26
easy
asked
Jan 20, 2014
by
sreemathi.v
1
answer
Total number of nodal planes are same in
jeemain
chemistry
physical-chemistry
class11
unit2
atomic-structure
quantum-mechanical-model
q26
easy
asked
Jan 10, 2014
by
sreemathi.v
1
answer
Let A,B,C be three equally likely and collectively exhaustive events. If the odds 8 : 3 against A, 5:2 against B then the odds against C are
jeemain
math
cbse
class12
probability
probability-distribution-of-a-random-variable
easy
q26
asked
Jan 6, 2014
by
thanvigandhi_1
1
answer
An infinite GP has its first term as x and sum is 6 , then which of the following is true?
jeemain
math
class11
ch9
sequences-and-series
easy
relationship-between-ap-and-gm
q26
asked
Jan 2, 2014
by
yamini.v
1
answer
The direction ratio of the normal to the plane through $(1,0,0),(0,1,0)$, which makes $\large\frac{\pi}{4} $ with the plane $x+y=3$ is ?
jeemain
math
class12
ch11
3d-geometry
direction-cosines
easy
q26
asked
Dec 28, 2013
by
rvidyagovindarajan_1
1
answer
Let $f : R\rightarrow R$ be a positive increasing function with $\lim\limits_{x\to 0}\large\frac{f(3x)}{f(x)}$$=1$. Then $\lim\limits_{x\to \infty}\large\frac{f(2x)}{f(x)}$ = ?
jeemain
math
class12
unit8
continuity-and-differentiability
easy
q26
asked
Dec 23, 2013
by
sreemathi.v
1
answer
A thin conducting ring of radius R is given a charge +Q. The electric field at the centre O of the ring due to the charge on the part AKB of the ring is E. The electric field at the centre due to the charge on the part ACDB of the ring is :
aipmt
modelpaper
physics
2008
q26
asked
Dec 15, 2013
by
thanvigandhi_1
0
answers
Solve : $f(x)=\int \limits_0^2 \large\frac{\sqrt {2-x}}{\sqrt {2-x}+\sqrt {x}}dx$
jeemain
math
class12
ch7
integral-calculus
integration-using-partial-fractions
easy
q26
asked
Dec 13, 2013
by
meena.p
1
answer
An electrochemical cell is shown below : $Pt, H_2(1\;atm)|HCL(0.1\;M| CH_3COOH(0.1\;M)|H_2(1\;atm)Pt$ The EMF of the cell will not be zero , because :
jeemain
chemistry
unit8
redox-reactions-and-electrochemistry
q26
medium
asked
Dec 11, 2013
by
sreemathi.v
1
answer
The xenon compounds that are isostructural with $IBr_2-$ and $BrO_3-$ respectively are
jeemain
chemistry
physical-chemistry
class11
unit4
chemical-bonding-and-molecular-structure
vsepr(valence-shell-electron-pair-repulsion)theory
q26
medium
asked
Dec 9, 2013
by
sreemathi.v
1
answer
In photosynthetic electron transport system, manganese ions are associated with
jeemain
eamcet
biology
2002
q26
asked
Dec 8, 2013
by
thanvigandhi_1
1
answer
Refer to the below equation :
jeemain
chemistry
unit21
organic-chemistry
q26
difficult
basic-organic-chemistry
class11
ch12
asked
Dec 5, 2013
by
sreemathi.v
1
answer
The product of of the following reaction can be
jeemain
chemistry
unit21
organic-chemistry
q26
medium
basic-organic-chemistry
class11
ch12
asked
Dec 3, 2013
by
sreemathi.v
1
answer
Which of the component of photosynthetic electron transport is directly involved in the transport of protons from stroma to lumen of thylakoid ?
jeemain
eamcet
biology
2001
q26
asked
Dec 1, 2013
by
thanvigandhi_1
1
answer
$IF_7$ hybridization
jeemain
chemistry
unit15
p-block-elements
q26
easy
asked
Nov 27, 2013
by
sreemathi.v
1
answer
The scientist associated with the discovery of photosystems :
jeemain
eamcet
biology
2000
q26
asked
Nov 24, 2013
by
thanvigandhi_1
0
answers
The bacterium 'Delovibriobacteriovorus' is
jeemain
eamcet
biology
1999
q26
asked
Nov 23, 2013
by
thanvigandhi_1
0
answers
Given : $2x-y+2z=2,x-2y+z=-4,x+y+\lambda z=4$ then the value of $\lambda$ such that the given system of equation has No solution is
jeemain
math
ch4
class12
determinants
q26
system-of-linear-equations
easy
asked
Nov 20, 2013
by
sreemathi.v
1
answer
Let $ABC$ be a triangle such that $\angle ACB=\large\frac{\pi}{6}$.Let $a,b$ and $c$ denote the lengths of the sides opposite to $A,B$ and $C$ respectively.The value of $x$ for which $a=x^2+x+1,b=x^2-1$ and $c=2x+1$ is
jeemain
math
class11
ch3
trigonometric-functions
q26
angles
difficult
asked
Nov 18, 2013
by
sreemathi.v
1
answer
For the reversible reaction equilibrium is $ N_2(g) + O_2(g) \overset{\overset{k_r}{\rightleftharpoons}}{_{k_f}} 2NO(g), $ $C_0 = Ce^{-2.1 \times 10^{-3} t} $ for the forward reaction and $C'_0 = C'e^{-4.2 \times 10^{-4}} t$ for the backward reaction, hence, if both forward and backward reactions are first order reactions then $K_c$ for the above equilibrium is:
jeemain
aipmt
chemistry
equilibrium
medium
q26
biology
asked
Nov 15, 2013
by
mosymeow_1
1
answer
If $A+C=2B$ then $\large\frac{\cos C- \cos A}{\sin A- \sin C}$ is equal to :
jeemain
eamcet
math
2005
q26
asked
Nov 12, 2013
by
meena.p
1
answer
The disease caused by the virus having double stranded nucleic acid with ribose sugar as genetic material is :
jeemain
eamcet
biology
2010
q26
asked
Nov 11, 2013
by
thanvigandhi_1
1
answer
Which of the following is not an air pollutant ?
jeemain
eamcet
chemistry
2005
q26
asked
Nov 11, 2013
by
meena.p
0
answers
The vector that makes equal angle with $\large\frac{1}{3}$$(\hat i-2\hat j+2\hat k), \:\large\frac{1}{5}$$(-4\hat i-3\hat k)$ and $\hat j$ is ?
jeemain
math
class12
ch10
vector-algebra
medium
vector-product
q26
asked
Nov 7, 2013
by
rvidyagovindarajan_1
1
answer
A light ray of wavelength $ \lambda$ is passing through a pin hole of diameter D and the effect is observed on a screen placed at a distance L from the pin hole. The approximations of geometrical optics are applicable if :
jeemain
eamcet
physics
2005
q26
asked
Nov 7, 2013
by
meena.p
1
answer
The quadratic equation whose roots are $\sin ^2 18^{\circ}$ and $\cos ^2 36^{\circ}$ is :
jeemain
eamcet
math
2006
q26
asked
Nov 6, 2013
by
meena.p
1
answer
The formula weight of an acid is 82.0.$100cm^3$ of a solution of this acid containing 39.0g of the acid per litre were completely neutralized by $95.0cm^3$ of aqueous NaOH containing 40.0g of NaOH per litre.What is the basicity of the acid?
jeemain
chemistry
physical-chemistry
class11
unit1
some-basic-concepts-in-chemistry
stoichiometry
q26
easy
asked
Oct 31, 2013
by
sreemathi.v
1
answer
The volume - temperature graphs of a given mass of an ideal gas at constant pressures are shown below. What is the correct order of pressures?
jeemain
eamcet
chemistry
2006
q26
asked
Oct 30, 2013
by
meena.p
1
answer
In Young's double slit experiment, first slit has width four of the second slit. the ratio of the maximum intensity to the minimum intensity in the interference fringe system is :
jeemain
eamcet
physics
2006
q26
asked
Oct 29, 2013
by
meena.p
1
answer
Trace the correct sequence of stages in the development of male gametophyte in Cycas, starting from microspore :
jeemain
eamcet
biology
2011
q26
asked
Oct 26, 2013
by
thanvigandhi_1
1
answer
$\large\frac{\tan 80^{\circ} -\tan 10^{\circ}}{\tan 70^{\circ}}$ is equal to
jeemain
eamcet
math
2007
q26
asked
Oct 24, 2013
by
meena.p
1
answer
A carbon compound containing only carbon and oxygen has an approximate molecular mass of 290.On analysis,it is found to contain 50% by mass of each element .What is the molecular formula of the compound?
jeemain
chemistry
physical-chemistry
class11
unit1
some-basic-concepts-in-chemistry
percentage-composition
q26
medium
asked
Oct 24, 2013
by
sreemathi.v
1
answer
Assertion (A): A catalyst increase the rate of a reaction. Reason (R): In presence of a catalyst, the activation energy of the reaction increases.
jeemain
eamcet
chemistry
2007
q26
asked
Oct 23, 2013
by
meena.p
1
answer
In Huygens eyepiece
jeemain
eamcet
physics
2007
q26
asked
Oct 22, 2013
by
meena.p
1
answer
If $\tan \theta + \tan \bigg(\theta +\large\frac{\pi}{3}\bigg)$$+\tan \bigg(\theta +\large\frac{2 \pi}{3}\bigg)$$=3$,then which of the following is equal to 1?
jeemain
eamcet
math
2008
q26
asked
Oct 17, 2013
by
meena.p
0
answers
If 9 ATP and 6 NADPH are utilized for photosynthetic carbon assimilation through Calvin cycle, what would be the ratio of Erythrose 4-phosphate, xylulose 5-phosphate and Ribulose 5-phosphate molecules formed as intermediates in regeneration phase of Calvin cycle?
jeemain
eamcet
biology
2012
q26
asked
Oct 16, 2013
by
thanvigandhi_1
1
answer
If $\cos(\theta-\alpha)=a$ and $\sin(\theta-\beta)=b$ then $\cos^2(\alpha-\beta)+2ab\sin(\alpha-\beta)$ is equal to
jeemain
math
class11
ch3
trigonometric-functions
q26
trignometric-identities
medium
asked
Oct 15, 2013
by
sreemathi.v
1
answer
$\cos ^{-1}\bigg(\large\frac{-1}{2}\bigg)$$-2 \sin ^{-1} \bigg(\large\frac{1}{2}\bigg)$$+3 \cos ^{-1} \bigg(\large\frac{-1}{\sqrt 2}\bigg)$$-4 \tan ^{-1}(-1)=$
jeemain
eamcet
math
2009
q26
asked
Oct 9, 2013
by
meena.p
1
answer
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