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Recent questions tagged q26
Questions
If $nC_{12}=nC_8$ then $n$ is equal to
cbse
math
class11
ch7
permutations-and-combinations
exercise7-3
exemplar
q26
sec-a
easy
asked
May 16, 2014
by
sreemathi.v
1
answer
Choose the correct answer if $10^n+3.4^{n+2}+k$ is divisible by 9 for all $n \in N$, then the least positive integral value of $k$ is
cbse
class11
ch4
mathematical-induction
exemplar
q26
asked
May 6, 2014
by
thanvigandhi_1
0
answers
Find the value of the expression :$\cos^4\large\frac{\pi}{8}$$+\cos^4\large\frac{3\pi}{8}$$+\cos^4\large\frac{5\pi}{8}$$+\cos^4\large\frac{7\pi}{8}$
cbse
math
class11
ch3
trigonometric-functions
exemplar
q26
sec-c
difficult
asked
Apr 21, 2014
by
sreemathi.v
1
answer
Find the derivative of the following functions ( it is to be understood that a, b, c, d, p, q, r and s are fixed non-zero constants and m and n are integers ) $\large\frac{4x+5 \sin x}{3x+7 \cos x}$
math
cbse
class11
ch13
limits-and-derivatives
bookproblem
misc
p317-318
q26
asked
Apr 16, 2014
by
thanvigandhi_1
1
answer
Show that $\large\frac{1\times2^2+2\times 3^2+........n\times (n+1)^2}{1^2\times 2+2^2\times 3+.........n^2\times (n+1)}=\frac{3n+5}{3n+1}$
cbse
class11
ch9
bookproblem
sequences-and-series
misc
sec-c
difficult
q26
math
asked
Apr 7, 2014
by
rvidyagovindarajan_1
1
answer
A block of mass $m$ is placed on a surface with a vertical cross section given by $y=\large\frac{x^3}{6}$. If the coefficient of friction is $0.5$, the maximum height above the ground at which the block can be placed without slipping is :
jeemain
jeemain-2014
physics
q26
medium
asked
Apr 7, 2014
by
meena.p
1
answer
Evaluate $\lim\limits_{x \to 0} f(x)$ where $f(x)=\left\{\begin{array}{1 1}\large\frac{x}{|x|},&x\neq 0\\0,&x=0\end{array}\right.$
math
cbse
class11
ch13
limits-and-derivatives
bookproblem
limits
exercise13-1
p301-303
q26
asked
Apr 5, 2014
by
thanvigandhi_1
1
answer
Which of the following is pyrimidine base
jeemain
aipmt
chemistry
biomolecules
organic-chemistry
cbse
class12
unit16
easy
q26
asked
Mar 27, 2014
by
thanvigandhi_1
1
answer
The correct order of increasing basic strength of bases $NH_3, CH_3NH_2\: and\: (CH_3)_2NH$ is
jeemain
aipmt
chemistry
nitrogen
organic-chemistry
cbse
class12
unit13
q26
medium
asked
Mar 22, 2014
by
thanvigandhi_1
1
answer
When hard steel is heated to bright redness and then allowed to cool slowly, it gets softened. The process is called
jeemain
cbse
chemistry
class12
unit6
general-principals-and-processes-of-isolation-of-metals
q26
medium
asked
Mar 17, 2014
by
meena.p
1
answer
The standard enthalpies of formation of $NO_2(g)\: and\: N_2O_4(g)$ are $8$ and $2\: kcal/mol$ respectively. The heat of dimerisation of $ NO_2$ in gaseous state is
jeemain
physics
thermodynamics
cbse
class11
class12
q26
easy
asked
Mar 15, 2014
by
thanvigandhi_1
1
answer
The enthalpy of formation of $ Cl(g)\: is\: x\: kJ/mol$. The value of $ \Delta H_{Cl-Cl} $ will be
jeemain
physics
thermodynamics
cbse
class11
class12
q26
easy
asked
Mar 15, 2014
by
thanvigandhi_1
1
answer
The dipole moment of a hydrogen halide $H-X$ is 1.80 and the bond length is 1.5$A^{\large\circ}$.The percentage of ionic character of H-X bond will be :$(e=4.8\times 10^{-10}$e.s.u)
jeemain
chemistry
physical-chemistry
class11
unit4
chemical-bonding-and-molecular-structure
bond-parameters
q26
difficult
asked
Mar 10, 2014
by
sreemathi.v
1
answer
Nylon threads are made of
jeemain
aipmt
chemistry
cbse
unit5
class12
organic-chemistry
polymers
q26
easy
asked
Mar 7, 2014
by
thanvigandhi_1
1
answer
The non-polar molecule is
jeemain
chemistry
physical-chemistry
class11
unit4
chemical-bonding-and-molecular-structure
molecular-orbital-theory
q26
easy
asked
Mar 5, 2014
by
sreemathi.v
1
answer
Insert $2$ numbers between $3$ and $81$ so that the resulting sequence is a G.P. Find the two numbers.
cbse
class11
ch9
bookproblem
exercise9-3
sec-a
easy
q26
math
sequences-and-series
asked
Mar 3, 2014
by
rvidyagovindarajan_1
1
answer
Insert $2$ numbers between $3$ and $81$ so that the resulting sequence is a G.P. Find the two numbers.
cbse
class11
ch9
bookproblem
exercise9-3
sec-a
easy
q26
math
sequences-and-series
asked
Mar 3, 2014
by
rvidyagovindarajan_1
1
answer
Refer the below reaction B is
jeemain
chemistry
unit13
class12
organic-chemistry
nitrogen
amines
q26
medium
asked
Feb 28, 2014
by
sreemathi.v
1
answer
The structure shows:
jeemain
chemistry
class11
organic-chemistry
q26
difficult
basic-organic-chemistry
ch12
asked
Feb 21, 2014
by
meena.p
1
answer
Benzaldehyde differs from acetaldehyde in that
jeemain
chemistry
unit11
unit12
class12
organic-chemistry
oxygen
aldehyde-and-ketones
q26
medium
asked
Feb 20, 2014
by
sreemathi.v
1
answer
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