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Recent questions tagged q38
Questions
The linkage holding monosaccaride units in maltose is
jeemain
aipmt
chemistry
biomolecules
organic-chemistry
cbse
class12
unit16
medium
q38
asked
Mar 28, 2014
by
thanvigandhi_1
1
answer
Which of the following on reduction with $LiAlH_4$ Yields a secondary amine?
jeemain
aipmt
chemistry
nitrogen
organic-chemistry
cbse
class12
unit13
q38
medium
asked
Mar 26, 2014
by
thanvigandhi_1
1
answer
Wrought iron is
jeemain
cbse
chemistry
class12
unit6
general-principals-and-processes-of-isolation-of-metals
q38
medium
asked
Mar 17, 2014
by
meena.p
1
answer
Calculate standard internal energy change($ \Delta E^{\circ}$) for the reaction \[\] $OF2(g) + H_2O(g) \rightarrow O_2(g) + 2HF(g)$ \[\] Given standard enthalpies of formation $ \Delta H_f^{\circ}\: of\: OF_2(g), H_2O(g)\: and\: HF(g)$ are23, -241.8 and -268.6 kJ/mol respectively.
jeemain
physics
thermodynamics
cbse
class11
class12
q38
medium
asked
Mar 16, 2014
by
thanvigandhi_1
1
answer
Match the following column-I and column-II
jeemain
chemistry
physical-chemistry
class11
unit4
chemical-bonding-and-molecular-structure
molecular-orbital-theory
q38
difficult
asked
Mar 10, 2014
by
sreemathi.v
1
answer
Which of the following is a thermosetting polymer?
jeemain
aipmt
chemistry
cbse
unit5
class12
organic-chemistry-polymers
q38
medium
asked
Mar 7, 2014
by
thanvigandhi_1
1
answer
Stability of the species $Li_2,Li_2^-$ and $Li_2^+$ increases in the order
jeemain
chemistry
physical-chemistry
class11
unit4
chemical-bonding-and-molecular-structure
molecular-orbital-theory
q38
medium
asked
Mar 6, 2014
by
sreemathi.v
1
answer
Which of the following is not true for resonance :
jeemain
chemistry
physical-chemistry
class11
unit4
chemical-bonding-and-molecular-structure
bond-parameters
q38
easy
asked
Mar 5, 2014
by
sreemathi.v
1
answer
Refer the below is expected to be
jeemain
chemistry
unit13
class12
organic-chemistry
nitrogen
amines
q38
medium
asked
Mar 3, 2014
by
sreemathi.v
1
answer
About 5% of the power of a $100\: W$ light bulb is converted to visible radiation. What is the average intensity of visible radiation at a distance of $10\: m$ from the bulb?
jeemain
aipmt
physics
cbse
class12
ch8
electromagnetic-waves
q38
medium
asked
Feb 27, 2014
by
thanvigandhi_1
1
answer
The $Cl-C-Cl$ angle in $1,1,2,2$- tetracholoroethene and tetrachloromethane respectively will be about
jeemain
chemistry
class11
organic-chemistry
q38
medium
basic-organic-chemistry
ch12
asked
Feb 22, 2014
by
meena.p
1
answer
What would be the product of the following reaction?
jeemain
chemistry
unit11
unit12
class12
organic-chemistry
oxygen
aldehyde-and-ketones
q38
medium
asked
Feb 20, 2014
by
sreemathi.v
1
answer
4 litre $C_2H_4(g)$ burns in oxygen at $27^{\large\circ}C$ and 1atm to produce $CO_2(g)$and $H_2O(g)$. Calculate the volume of $CO_2$ formed at $27^{\large\circ}C$ and 4 atm
jeemain
chemistry
physical-chemistry
class11
unit5
states-of-matter
ideal-gas-equation
easy
q38
asked
Feb 15, 2014
by
sharmaaparna1
1
answer
The osmotic pressures of equimolar solutions of glucose, potassium chloride and Barium chloride will be in the order
jeemain
chemistry
class12
unit2
solutions
q38
medium
asked
Feb 13, 2014
by
sreemathi.v
1
answer
For the equation $ax^2+2hxy+by^2+2gx+2fy+c=0$ to be parabola what should be the conditions?
jeemain
math
class11
coordinate-geometry-conic -sections
parabola
ch11
q38
easy
asked
Feb 5, 2014
by
sreemathi.v
1
answer
General solution of differential equation: $(x+1) \large\frac{dy}{dx}$$-y = (x+1)^2$
jeemain
math
class12
ch9
differential-equations
linear-differential-equations
q38
easy
asked
Feb 4, 2014
by
meena.p
1
answer
The first of the two sample has 100 items with mean 15 and S.D= 3. If the whole group has 250 items with mean 15.6 and SD = $ \sqrt{13.44}$ the S.D of the second group is?
jeemain
math
cbse
class11
statistics
variance-and-standard-deviation
difficult
q38
asked
Jan 31, 2014
by
thanvigandhi_1
1
answer
How many EDTA (ethylenediaminetetraacetic acid) molecules are required to make an octahedral complex with $Ca^{2+}$ ion
jeemain
chemistry
class12
coordination-compounds
unit9
q38
medium
asked
Jan 31, 2014
by
sreemathi.v
1
answer
What is the output resistance, When we observe in a common emitter circuit the collector current increase from $9.5 \;mA\;to 10\;mA$ When the collector voltage increase from $2.5 \;to \;6v$ When base current is kept constant .
jeemain
physics
class12
unit19
ch14
q38
medium
transistors
semiconductor-electronics
asked
Jan 28, 2014
by
meena.p
1
answer
If the slopes of the line of regression of $y$ on $x$ and of $x$ on $y$ are $30^{\circ}$ and $60^{\circ}$ respectively. Then $ r(x,y)$ is
jeemain
math
cbse
class11
statistics
medium
measures-of-dispersion
q38
asked
Jan 27, 2014
by
thanvigandhi_1
1
answer
Metal used in the detection of nitrogen in organic compound is
jeemain
chemistry
class11
s-block-elements
unit10
q38
medium
asked
Jan 27, 2014
by
sreemathi.v
1
answer
Which of the following is reduced by $H_2O_2$ in acid medium
jeemain
chemistry
class11
hydrogen
unit9
q38
medium
asked
Jan 23, 2014
by
sreemathi.v
1
answer
Let A={2,3,5,7}. For which of the sets, truth value is true?
jeemain
math
mathematical-reasoning
class11
ch14
medium
implications-(tautology-contradiction.)
q38
asked
Jan 21, 2014
by
thanvigandhi_1
1
answer
Lichens can serve as pollution
jeemain
chemistry
class11
environmental-chemistry
unit14
q38
medium
asked
Jan 20, 2014
by
sreemathi.v
1
answer
In ground state of $_{24}Cr$
jeemain
chemistry
physical-chemistry
class11
unit2
atomic-structure
quantum-mechanical-model
q38
easy
asked
Jan 10, 2014
by
sreemathi.v
1
answer
The weight of slaked lime required to decompose 8.0g $NH_4Cl$ is
jeemain
chemistry
physical-chemistry
class11
unit1
some-basic-concepts-in-chemistry
atomic-and-molecular-masses
q38
easy
asked
Jan 8, 2014
by
sreemathi.v
1
answer
$0.5gm$ of $H_2SO_4$(oleum) is diluted with water.This solution is completely neutralized by 26.4ml of 0.4N NaOH.Find the % of free $SO_3$ in the sample.
jeemain
chemistry
physical-chemistry
class11
unit1
some-basic-concepts-in-chemistry
stoichiometry
q38
difficult
asked
Jan 8, 2014
by
sreemathi.v
1
answer
How many terms of the series $\sqrt2$, 2, $2\sqrt2$,------- will make a sum of $62+31\sqrt2$ ?
jeemain
math
class11
ch9
sequences-and-series
easy
relationship-between-ap-and-gm
q38
asked
Jan 2, 2014
by
yamini.v
1
answer
The equation of a line that are equally inclined with the coordinate axis and and which passes through $(-1,2,3)$ is?
jeemain
math
class12
ch11
3d-geometry
equations-of-lines
easy
q38
asked
Jan 1, 2014
by
rvidyagovindarajan_1
1
answer
$\lim\limits_{n\to\infty}\bigg[\large\frac{1}{1-n^4}+\frac{1}{1-n^4}+.........+\frac{n^3}{1-n^4}\bigg]$
jeemain
math
class11
ch11
limits-and-derivatives
introduction to limits
easy
q38
asked
Dec 23, 2013
by
sreemathi.v
1
answer
A long solenoid has 500 turns. When a current of 2 ampere is passed through it, the resulting magnetic flux linked with each turn of the solenoid is $ 4 \times 10^{-3}\: \omega b$. The self - inductance of the solenoid is :
aipmt
modelpaper
physics
2008
q38
asked
Dec 16, 2013
by
thanvigandhi_1
0
answers
$g(t) =\int \limits_o^t \sin ^6 x .dx$ find $g(\pi+t)$
jeemain
math
class12
ch7
integral-calculus
definite-integrals-by-substitution
medium
q38
asked
Dec 14, 2013
by
meena.p
1
answer
Find the time through which an average current 1.93Amp passed to reduce 0.2mol of $MgCl_2$ into Mg .The current efficiency is 60%
jeemain
chemistry
unit8
redox-reactions-and-electrochemistry
q38
difficult
asked
Dec 11, 2013
by
sreemathi.v
1
answer
In obdlplostemonous androecium the stamens are arranged in :
jeemain
eamcet
biology
2002
q38
asked
Dec 9, 2013
by
thanvigandhi_1
0
answers
The reactivity of which H atom is maximum for Halogenation by free radical mechanism?
jeemain
chemistry
unit21
organic-chemistry
q38
difficult
basic-organic-chemistry
class11
ch12
asked
Dec 5, 2013
by
sreemathi.v
1
answer
In clerodendron the self-pollination is prevented by
jeemain
eamcet
biology
2001
q38
asked
Dec 1, 2013
by
thanvigandhi_1
0
answers
Bleaching action of $SO_2$ is due to
jeemain
chemistry
unit15
p-block-elements
q38
medium
asked
Nov 27, 2013
by
sreemathi.v
1
answer
In Benincasa the condition of androecium is described as :
jeemain
eamcet
biology
2000
q38
asked
Nov 25, 2013
by
thanvigandhi_1
1
answer
Conjugate base of Hydrazoic acid is
sat
chemistry
chemical-equilibrium
jeemain
aipmt
equilibrium
easy
q38
biology
asked
Nov 23, 2013
by
mosymeow_1
2
answers
Lotic ecosystem refers to
jeemain
eamcet
biology
1999
q38
asked
Nov 23, 2013
by
thanvigandhi_1
0
answers
If $1,\omega,\omega^2$ are the cube roots of unity ,then $\Delta=\begin{vmatrix}1&\omega^n&\omega^{2n}\\\omega^{2n}&1&\omega^n\\\omega^{2n}&1&\omega^n\end{vmatrix}$ is equal to
jeemain
math
class12
ch4
determinants
q38
evaluate-determinants
easy
asked
Nov 21, 2013
by
sreemathi.v
1
answer
Total number of solutions of $\cos x.\cos 2x.\cos 3x=\large\frac{1}{4}$ in $[0,\pi]$ is equal to
jeemain
math
class11
ch3
trigonometric-functions
q38
trigonometric-equations
difficult
asked
Nov 19, 2013
by
sreemathi.v
1
answer
If $ \overrightarrow x=\large\frac{\overrightarrow b\times\overrightarrow c}{[\overrightarrow a\:\overrightarrow b\:\overrightarrow c]},\:\:\overrightarrow y=\large\frac{\overrightarrow c\times\overrightarrow a}{[\overrightarrow a\:\overrightarrow b\:\overrightarrow c]},\:\:and\:\:\overrightarrow z=\large\frac{\overrightarrow a\times\overrightarrow b}{[\overrightarrow a\:\overrightarrow b\:\overrightarrow c]},$ then $\overrightarrow x.(\overrightarrow a+\overrightarrow b)+\overrightarrow y.(\overrightarrow b+\overrightarrow c)+\overrightarrow z.(\overrightarrow c+\overrightarrow a)=?$
jeemain
math
class12
ch10
vector-algebra
medium
vector-product
q38
asked
Nov 12, 2013
by
rvidyagovindarajan_1
1
answer
Identify the correct combination of the following related to recombinant DNA technology :
eamcet
jeemain
biology
2010
q38
asked
Nov 12, 2013
by
thanvigandhi_1
0
answers
Observe the following lists :
jeemain
eamcet
math
2005
q38
asked
Nov 12, 2013
by
meena.p
1
answer
Match the following lists:
jeemain
eamcet
chemistry
2005
q38
asked
Nov 11, 2013
by
meena.p
0
answers
A particle of mass $1 \times 10^{-26}\;kg$ and charge $1.6 \times 10^{-19} C$ travelling with a velocity $1.28 \times 10^{6} ms^{-1}$ along the positive X-axis enters a region in which a uniform electric field $\overrightarrow {E} $ and a uniform magnetic field of induction $\overrightarrow {B}$ are present. If $\overrightarrow {E} =-102.4 \times 10^3 \hat k NC^{-1}$ and $B= 8 \times 10^{-2}\; \hat j Wbm^{-2}$, the direction of motion of the particles is :
jeemain
eamcet
physics
2005
q38
asked
Nov 8, 2013
by
meena.p
1
answer
$\overrightarrow {a}. \hat i=\overrightarrow {a}.(2 \hat i +\hat j)= \overrightarrow {a}(\hat i+\hat j+3 \hat k)=1$, then $\overrightarrow a$ is equal to :
jeemain
eamcet
math
2006
q38
asked
Nov 6, 2013
by
meena.p
1
answer
Which of the following reactions does not liberate gaseous product?
jeemain
eamcet
chemistry
2006
q38
asked
Nov 5, 2013
by
meena.p
0
answers
A proton, a deuteron (nucleus of $_1 H^2$) and an $\alpha$- particle with same kinetic energy enter a region of uniform magnetic field moving at right angles to the field. The ratio of the radii of their circular paths is :
jeemain
eamcet
physics
2006
q38
asked
Oct 29, 2013
by
meena.p
1
answer
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