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Recent questions tagged q32
Questions
Every body in a room shakes hands with everybody else.The total number of hand shakes is 66.The total number of persons in the room is
cbse
math
class11
ch7
permutations-and-combinations
exercise7-3
exemplar
q32
sec-b
medium
asked
May 16, 2014
by
sreemathi.v
1
answer
If $\tan \theta=\large\frac{1}{2}$ and $\tan\phi=\large\frac{1}{3}$,then the value of $\theta+\phi$ is
cbse
math
class11
ch3
trigonometric-functions
exemplar
q32
sec-b
medium
asked
Apr 21, 2014
by
sreemathi.v
1
answer
$150$ workers were engaged to finish a job in certain no. of days. $4$ workers dropped out on second day. $4$ more workers dropped out on third day and so on. It took $8$ more days to finish the work. Find the no. of days in which the work was completed.
cbse
class11
ch9
misc
bookproblem
sequences-and-series
sec-c
difficult
q32
math
asked
Apr 11, 2014
by
rvidyagovindarajan_1
1
answer
$f(x)=\left\{\begin{array}{1 1}mx^2+m,&x<0\\nx+m,&0 \leq x \leq 1 \\nx^3+m,&x>1 \end{array}\right.$ \[\] For what integers $m$ and $n$ does $ \lim\limits_{x \to 0} f(x)$ and $ \lim\limits_{x \to 1} f(x)$ exist?
math
cbse
class11
ch13
limits-and-derivatives
bookproblem
limits
exercise13-1
p301-303
q32
asked
Apr 7, 2014
by
thanvigandhi_1
1
answer
If the coefficients of $x^3$ and $x^5$ in the expansion of $(1+ax+bx^2)(1-2x)^{18}$ in powers of $x$ are both zero, then $(a,b)$ is equal to:
jeemain
math
complex-numbers-and-quadratic-equations
jeemain-2014
q32
asked
Apr 6, 2014
by
balaji.thirumalai
0
answers
Glucose reacts with acetic anhydride and forms
jeemain
aipmt
chemistry
biomolecules
organic-chemistry
cbse
class12
unit16
medium
q32
asked
Mar 28, 2014
by
thanvigandhi_1
2
answers
Which amine is most basic in aqueous medium?
jeemain
aipmt
chemistry
nitrogen
organic-chemistry
cbse
class12
unit13
q32
medium
asked
Mar 26, 2014
by
thanvigandhi_1
1
answer
The molten metal, obtained after the treatment of copper pyrites in the blast furnace, has the composition of
jeemain
cbse
chemistry
class12
unit6
general-principals-and-processes-of-isolation-of-metals
q32
medium
asked
Mar 17, 2014
by
meena.p
1
answer
At 1 atmospheric pressure, 1 gm of water having a volume of $1\: cm^3$ becomes $1.091\: cm^3$ of ice on freezing. The heat of fusion of water at 1 atmosphere is 80 cal/g. What is the change in internal energy during the process?
jeemain
physics
thermodynamics
cbse
class11
class12
q32
medium
asked
Mar 15, 2014
by
thanvigandhi_1
1
answer
Which one of the following order is correct for the increasing thermal stabilities of $K_2CO_3,MgCO_3,CaCO_3$ and $BeCO_3$?
jeemain
chemistry
physical-chemistry
class11
unit4
chemical-bonding-and-molecular-structure
molecular-orbital-theory
q32
difficult
asked
Mar 10, 2014
by
sreemathi.v
1
answer
Which of the following is not an example for addition polymer?
jeemain
aipmt
chemistry
cbse
unit5
class12
organic-chemistry-polymers
q32
medium
asked
Mar 7, 2014
by
thanvigandhi_1
1
answer
If A.M. and G.M. of roots of a quadratic equation are $8$ and $5$ respectively. Find the quadratic equation.
cbse
class11
ch9
bookproblem
exercise9-3
sec-a
easy
q32
math
sequences-and-series
asked
Mar 7, 2014
by
rvidyagovindarajan_1
1
answer
The bond order and magnetic behaviour of $He_2^{2+}$ are respectively
jeemain
chemistry
physical-chemistry
class11
unit4
chemical-bonding-and-molecular-structure
bond-parameters
q32
medium
asked
Mar 6, 2014
by
sreemathi.v
1
answer
The number of lone pairs in $XeF_2$
jeemain
chemistry
physical-chemistry
class11
unit4
chemical-bonding-and-molecular-structure
vsepr(valence-shell-electron-pair-repulsion)theory
q32
easy
asked
Mar 5, 2014
by
sreemathi.v
1
answer
Which of statement is correct regarding the basicity of the following two primary amines?
jeemain
chemistry
unit13
class12
organic-chemistry
nitrogen
amines
q32
medium
asked
Mar 3, 2014
by
sreemathi.v
1
answer
Which of the following hydrocarbons has the lowest dipole moment?
jeemain
chemistry
class11
organic-chemistry
q32
medium
basic-organic-chemistry
ch12
asked
Feb 21, 2014
by
meena.p
1
answer
Predict the product in the following reaction
jeemain
chemistry
unit11
unit12
class12
organic-chemistry
oxygen
aldehyde-and-ketones
q32
medium
asked
Feb 20, 2014
by
sreemathi.v
1
answer
A 4:1 molar mixture of He and $CH_4$ is contained in a vessel at 20 bar pressure. Due to a hole in the vessel, the gas mixture leaks out. What is the composition of the mixture effusing out initially?
jeemain
chemistry
physical-chemistry
class11
unit5
states-of-matter
gas-laws
easy
q32
asked
Feb 15, 2014
by
sharmaaparna1
1
answer
Find the coordinates of foot of the perpendicular drawn from the point (2,3) to the line $x+y+1=0$.
jeemain
math
class11
coordinate-geometry
straight-lines
distance-of-a-point-from-a-line
ch10
q32
difficult
asked
Feb 5, 2014
by
sreemathi.v
1
answer
General solution of differential equation: $\large\frac{dy}{dx}$$+x \sin 2y=x^3 \cos ^2 y$
jeemain
math
class12
ch9
differential-equations
solving-using-separation-of-variables
q32
medium
asked
Feb 4, 2014
by
meena.p
1
answer
Calomol $(Hg_2Cl_2)$ on reaction with ammonium hydroxide gives
jeemain
chemistry
class12
coordination-compounds
unit9
q32
medium
asked
Jan 31, 2014
by
sreemathi.v
1
answer
The mean of the numbers $ a, b, 8, 5, 10$ is $6$ and the variance is $6.80$. Then which one of the following gives possible values of $a$ and $b$ ?
jeemain
math
cbse
class11
statistics
variance-and-standard-deviation
difficult
q32
asked
Jan 29, 2014
by
thanvigandhi_1
1
answer
Which of the following salts does not form any precipitate with excess of $NaOH$?
jeemain
chemistry
class11
s-block-elements
unit10
q32
medium
asked
Jan 27, 2014
by
sreemathi.v
1
answer
The weighted mean of first $n$ natural numbers whose weights are equal to the squares of the corresponding numbers is
jeemain
math
cbse
class11
statistics
medium
measures-of-dispersion-(mean)
q32
asked
Jan 25, 2014
by
thanvigandhi_1
1
answer
Which of the following is oxidized by $H_2O_2$ in the alkaline medium
jeemain
chemistry
class11
hydrogen
unit9
q32
medium
asked
Jan 23, 2014
by
sreemathi.v
1
answer
What is the negation of the statement, If it rains, the humidity increases?
jeemain
math
mathematical-reasoning
class11
ch14
medium
statements
q32
asked
Jan 20, 2014
by
thanvigandhi_1
1
answer
What is the relative contribution of $CO_2$ to green house effect
jeemain
chemistry
class11
environmental-chemistry
unit14
q32
medium
asked
Jan 20, 2014
by
sreemathi.v
1
answer
Which of the following has the maximum number of unpaired electrons?
jeemain
chemistry
physical-chemistry
class11
unit2
atomic-structure
quantum-mechanical-model
q32
easy
asked
Jan 10, 2014
by
sreemathi.v
1
answer
Number of $K^+$ ions present in one litre of M/5 $KMnO_4$ solution are :
jeemain
chemistry
physical-chemistry
class11
unit1
some-basic-concepts-in-chemistry
mole-concept-and-molar-masses
q32
easy
asked
Jan 8, 2014
by
sreemathi.v
1
answer
A mixture of KOH and $Na_2CO_3$ solution required 15ml of N/20 HCl using phenolphthalein as indicator .The same amount of alkali mixture when titrated using methyl orange as an indicator required 25ml of same acid.Calculate the amount of KOH and $Na_2CO_3$ present in solution.
jeemain
chemistry
physical-chemistry
class11
unit1
some-basic-concepts-in-chemistry
stoichiometry
q32
difficult
asked
Jan 7, 2014
by
sreemathi.v
1
answer
If S is a sample space $P(A) = \large\frac{1}{3} P(B)\: and \: S = A \cup B$ where A,B are two mutually exclusive events, then $P(A)=$
jeemain
math
cbse
class11
probability
axiomatic-approach-to-probability
easy
q32
asked
Jan 6, 2014
by
thanvigandhi_1
1
answer
The sum of integers from 1 to 200 that are divisible by 2 or 5 is
jeemain
math
class11
ch9
sequences-and-series
easy
q32
asked
Jan 2, 2014
by
yamini.v
1
answer
The angle between the planes $3x+4y+5z=3$ and $4x-3y+5z=2$ is ?
jeemain
math
class12
ch14
3d-geometry
equations-of-planes
easy
q32
asked
Dec 31, 2013
by
rvidyagovindarajan_1
1
answer
Evaluate : $\lim\limits_{x\to 0}\large\frac{e^x-e^{x\cos x}}{x+\sin x}$
jeemain
math
class11
ch13
limits-and- derivatives
limits-of-trigonometric-functions
easy
q32
asked
Dec 23, 2013
by
sreemathi.v
1
answer
A current of 3 amp flowsw through the $ 2 - \Omega$ resistor shown in the circuit. The power dissipated in the $ 5 - \Omega $ resistor is :
aipmt
modelpaper
physics
2008
q32
asked
Dec 15, 2013
by
thanvigandhi_1
0
answers
Integrate: $\int \limits_{_z}^{z} \large\frac{2x(1+\sin x)}{1+\cos ^2 x}$$dx$
jeemain
math
class12
ch7
integral-calculus
integration-using-partial-fractions
difficult
q32
asked
Dec 13, 2013
by
meena.p
1
answer
Which of the following is wrong statement?
jeemain
chemistry
unit8
redox-reactions-and-electrochemistry
q32
difficult
asked
Dec 11, 2013
by
sreemathi.v
1
answer
Which one of the following acheived the production of Chrysanthemum varieties with prolonged blooming periods
jeemain
eamcet
biology
2002
q32
asked
Dec 8, 2013
by
thanvigandhi_1
0
answers
Bromination of carbonyl compound at $\alpha$ position is
jeemain
chemistry
unit21
organic-chemistry
q32
difficult
basic-organic-chemistry
class11
ch12
asked
Dec 5, 2013
by
sreemathi.v
1
answer
Which national institute encourages the publication of flora of different regions of India ?
jeemain
eamcet
biology
2001
q32
asked
Dec 1, 2013
by
thanvigandhi_1
0
answers
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