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Recent questions tagged q31
Questions
A five digit number divisible by 3 is to be formed using the numbers 0,1,2,3,4 and 5 without repetitions.The total number of ways this can be done is
cbse
math
class11
ch7
permutations-and-combinations
exercise7-3
exemplar
q31
sec-b
medium
asked
May 16, 2014
by
sreemathi.v
1
answer
If $f(x)=\cos^2x+\sec^2x$,then
cbse
math
class11
ch3
trigonometric-functions
exemplar
q31
sec-c
difficult
asked
Apr 21, 2014
by
sreemathi.v
1
answer
A manufacturer reckons that the value of a machine which costs him $Rs.15,625$, will depreciate each year by $20\%$. find the estimated value at the end of $5$ years.
cbse
class11
ch9
misc
bookproblem
sequences-and-series
sec-b
easy
q31
math
asked
Apr 11, 2014
by
rvidyagovindarajan_1
1
answer
If the function $f(x)$ satisfies $ \lim\limits_{x \to 1} \large\frac{f(x)-2}{x^2-1}= \pi$ , evaluate $ \lim\limits_{x \to 1} f(x)$
math
cbse
class11
ch13
limits-and-derivatives
bookproblem
limits
exercise13-1
p301-303
q31
asked
Apr 7, 2014
by
thanvigandhi_1
1
answer
The image of the line $\large\frac{x-1}{3}$ $ = $$\large\frac{y-3}{1}$$=$ $\large\frac{z-4}{-5}$ in the place $2x-y+z+3=0$ is the line:
jeemain
math
coordinate-geometry
jeemain-2014
q31
asked
Apr 6, 2014
by
balaji.thirumalai
0
answers
Enzymes belong to which class of compounds?
jeemain
aipmt
chemistry
biomolecules
organic-chemistry
cbse
class12
unit16
medium
q31
asked
Mar 27, 2014
by
thanvigandhi_1
1
answer
Amongst the following the most basic compound is
jeemain
aipmt
chemistry
nitrogen
organic-chemistry
cbse
class12
unit13
q31
medium
asked
Mar 26, 2014
by
thanvigandhi_1
1
answer
The Ailoy of nictrome conatins
jeemain
cbse
chemistry
class12
unit6
general-principals-and-processes-of-isolation-of-metals
q31
medium
asked
Mar 17, 2014
by
meena.p
1
answer
Two moles of a diatomic ideal gas is taken through the process $PT$ = const. Its temperature is increased from $T_oK$ to $2T_oK$. Find the work done by the system.
jeemain
physics
thermodynamics
cbse
class11
class12
q31
medium
asked
Mar 15, 2014
by
thanvigandhi_1
1
answer
Polarisation of electrons in acrolein may be written as :
jeemain
chemistry
physical-chemistry
class11
unit4
chemical-bonding-and-molecular-structure
bond-parameters
q31
difficult
asked
Mar 10, 2014
by
sreemathi.v
1
answer
Which of the following is not a bio degradable polymer?
jeemain
aipmt
chemistry
cbse
unit5
class12
organic-chemistry-polymers
q31
medium
asked
Mar 7, 2014
by
thanvigandhi_1
1
answer
What will Rs. 500 amounts to in $10$ years after its deposit in a bank which pays annual interest of $10%$ compounded annually?
cbse
class11
ch9
bookproblem
exercise9-3
sec-b
easy
q31
math
sequences-and-series
asked
Mar 6, 2014
by
rvidyagovindarajan_1
1
answer
The geometry and bond angles of $IF_7$ respectively
jeemain
chemistry
physical-chemistry
class11
unit4
chemical-bonding-and-molecular-structure
vsepr(valence-shell-electron-pair-repulsion)theory
q31
easy
asked
Mar 5, 2014
by
sreemathi.v
1
answer
In the below reaction
jeemain
chemistry
unit13
class12
organic-chemistry
nitrogen
amines
q31
medium
asked
Mar 3, 2014
by
sreemathi.v
1
answer
The intensity of the sunlight reaching the earth is $1380\; W/m^2$. Calculate the amplitude of the magnetic field in the light wave. Assume the light to be a plane monochromatic wave.
jeemain
aipmt
physics
cbse
class12
ch8
electromagnetic-waves
q31
medium
asked
Feb 27, 2014
by
thanvigandhi_1
1
answer
The products of combustion of an aliphatic thiol (RSH) at 298 k are
jeemain
chemistry
class11
organic-chemistry
q31
medium
basic-organic-chemistry
ch12
asked
Feb 21, 2014
by
meena.p
1
answer
Which of the following will be a best hydride donor?
jeemain
chemistry
unit11
unit12
class12
organic-chemistry
oxygen
aldehyde-and-ketones
q31
medium
asked
Feb 20, 2014
by
sreemathi.v
1
answer
The relative rates of diffusion of gas B as compared to that of diatomic gas A is 6.5. Find the molecular weight of B if atomic weight of A is 36.
jeemain
chemistry
physical-chemistry
class11
unit5
states-of-matter
gas-laws
easy
q31
asked
Feb 15, 2014
by
sharmaaparna1
1
answer
Find the orthocentre of $\Delta ABC$ whose vertices are $A(0,1),B(-1,0),C(1,0)$.
jeemain
math
class11
coordinate-geometry
straight-lines
distance-of-a-point-from-a-line
ch10
q31
difficult
asked
Feb 5, 2014
by
sreemathi.v
1
answer
General solution of differential equation: $x \large\frac{dy}{dx}$$+y=x^3 y^6$
jeemain
math
class12
ch9
differential-equations
solving-using-separation-of-variables
q31
medium
asked
Feb 4, 2014
by
meena.p
1
answer
The oxidation state of Cr in the complex $[Cr(NH_3)_4Cl_2]^+$ is
jeemain
chemistry
class12
coordination-compounds
unit9
q31
medium
asked
Jan 31, 2014
by
sreemathi.v
1
answer
If the mean deviation of the numbers $ 1, 1+d, 1+2d......1+100d$ from their mean is $255$, then the $d$ is equal to
jeemain
math
cbse
class11
statistics
measures-of-dispersion-(mean)
difficult
q31
asked
Jan 29, 2014
by
thanvigandhi_1
1
answer
For two data sets each of size 5, the variances are given to be 4 and 5 and the corresponding means are given to be 2 and 4 respectively. The variance of the combined data set is
jeemain
math
cbse
class11
statistics
variance-and-standard-deviation
difficult
q31
asked
Jan 28, 2014
by
thanvigandhi_1
1
answer
Which of the following alkali metals has the highest tendency for the half reaction? $M(g)\rightarrow M^+(g)+e^-$
jeemain
chemistry
class11
s-block-elements
unit10
q31
medium
asked
Jan 27, 2014
by
sreemathi.v
1
answer
If the mean of the set of numbers $ x_1, x_2.....x_n$ is $ \overline x$ then mean of the numbers $ x_i+2i \: \: 1 \leq i \leq n $ is
jeemain
math
cbse
class11
statistics
medium
measures-of-dispersion-(mean)
q31
asked
Jan 25, 2014
by
thanvigandhi_1
1
answer
$H_2$ gas is liberated when $H_2O_2$ reacts with
jeemain
chemistry
class11
hydrogen
unit9
q31
medium
asked
Jan 23, 2014
by
sreemathi.v
1
answer
Indicate the Premise2 in the following Premise1: All integers less than zero are negativenumbers. Conclusion : y is a negative number.
jeemain
math
mathematical-reasoning
class11
ch14
medium
statements
q31
asked
Jan 20, 2014
by
thanvigandhi_1
1
answer
In the absence of green house effect what would be the mean temperature of earth?
jeemain
chemistry
class11
environmental-chemistry
unit14
q31
medium
asked
Jan 20, 2014
by
sreemathi.v
1
answer
Which is correct paramagnetic order?
jeemain
chemistry
physical-chemistry
class11
unit2
atomic-structure
quantum-mechanical-model
q31
easy
asked
Jan 10, 2014
by
sreemathi.v
1
answer
$4I^-+Hg^{2+}\rightarrow HgI_4^{2-}$;1 mole each of $Hg^{2+}$ and $I^-$ will form _________ mole $HgI_4^{2-}$
jeemain
chemistry
physical-chemistry
class11
unit1
some-basic-concepts-in-chemistry
stoichiometry
q31
easy
asked
Jan 8, 2014
by
sreemathi.v
1
answer
Approximately 45.0litre of 4.360M HCl were required for several experiments.How many litre of concentrated acid (37.5% by wt HCl) will be required?The specific gravity of conc. acid was $1.1875gml^{-1}$
jeemain
chemistry
physical-chemistry
class11
unit1
some-basic-concepts-in-chemistry
stoichiometry
q31
difficult
asked
Jan 7, 2014
by
sreemathi.v
1
answer
Let P be the probability of happening any event and Q its failure, then the total chance of $ r$ success in $n$ trials is
jeemain
math
cbse
class11
probability
events
easy
q31
asked
Jan 6, 2014
by
thanvigandhi_1
1
answer
If $a, b, c$ are in $AP$ and $a^2,b^2,c^2$ are in $HP$, how are $a, b$ and $\large\frac{-c}{2}$ related?
jeemain
math
class11
ch9
sequences-and-series
easy
relationship-between-ap-and-gm
q31
asked
Jan 2, 2014
by
yamini.v
1
answer
The angle between the lines $\large\frac{2-x}{1}=\frac{y}{2}=\frac{z+3}{1}\:\:and\:\:\large\frac{x-4}{4}=\frac{y-1}{1}=\frac{z-5}{2}$ is?
jeemain
math
class12
ch11
3d-geometry
equations-of-lines
easy
q31
asked
Dec 31, 2013
by
rvidyagovindarajan_1
1
answer
Evaluate : $\lim\limits_{x\to 0}(1+\sin x)^{\Large\frac{1}{x^2}}$
jeemain
math
class11
ch13
limits and derivatives
introduction to limits
easy
q31
asked
Dec 23, 2013
by
sreemathi.v
1
answer
An electric kettle takes 4A current at 220 V. How much time will it take to boil 1kg of water from temperature $20^{\circ}C$ ? The temperature of boiling water is $ 100^{\circ}C$.
aipmt
modelpaper
physics
2008
q31
asked
Dec 15, 2013
by
thanvigandhi_1
0
answers
$f(x)= \large\frac{e^x}{1+e^x}$ $\;I_1= \int \limits_{f(-a)}^{f(a)} x g[(x) (1-x)].dx;\;I_2= \int \limits_{f(-a)}^{f(a)} x g[(x) (1-x)].dx;$ then $\large\frac{I_1}{I_2}=?$
jeemain
math
class12
ch7
integral-calculus
definite-integrals-as-limit-of-sum
difficult
q31
asked
Dec 13, 2013
by
meena.p
1
answer
Which of the following reactions are not possible ?
jeemain
chemistry
unit8
redox-reactions-and-electrochemistry
q31
easy
asked
Dec 11, 2013
by
sreemathi.v
1
answer
$ XeF_3^+$ belongs to which one of the following $AX_nE_m$ nomenclatures (A central atom, X singly bonded ligand and E an unshared electron pair) ?
jeemain
chemistry
physical-chemistry
class11
unit4
chemical-bonding-and-molecular-structure
vsepr(valence-shell-electron-pair-repulsion)-theory
q31
medium
asked
Dec 9, 2013
by
sreemathi.v
1
answer
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