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Recent questions tagged 03042016
ASK
The Boolean Expression $(p \wedge \sim q) \vee q \vee (\sim p \wedge q)$\ is quivalent to :
jeemain
2016
maths
set a
03042016
asked
Mar 22, 2017
by
meena.p
1
answer
A man is walking towards a vertical pillar in a straight path, at a uniform speed. At a certain point A on the path, he observes that the angle of elevation of the top of the pillar is $30^{\circ}$. After walking for 10 minutes from A in the same direction, at a point B, he observes that the angle of elevation of the top of the pillar is $60^{\circ}$. Then the time taken (in minutes) by him, from B to reach the pillar, is :
jeemain
2016
maths
set a
03042016
asked
Mar 22, 2017
by
meena.p
1
answer
If $0 \leq x < 2 \pi$, then the number of real values of $x$, which satisfy the equation $\cos x + \cos 2x = \cos 3x + \cos 4x = 0,$ is :
jeemain
2016
maths
set a
03042016
asked
Mar 22, 2017
by
meena.p
1
answer
Let two fair six-faced dice A and B be thrown simultaneously. If $E_1$ is the event that die $A$ shows up four, $E_2$ is the event that die B shows up two and $E_3$ is the event that the sum of numbers on both dice is odd, then which of the following statements is NOT true?
jeemain
2016
maths
set a
03042016
asked
Mar 21, 2017
by
meena.p
1
answer
If the standard deviation of the numbers $2, 3, a$ and $11$ is $3.5,$ then which of the following is true?
jeemain
2016
maths
set a
03042016
asked
Mar 21, 2017
by
meena.p
1
answer
Let $\overrightarrow{a}, \overrightarrow{b}$ and $\overrightarrow{c}$be three unit vectors such that $\overrightarrow{a} \times (\overrightarrow{b} \times \overrightarrow{c}) = \large\frac{3}{2}(\overrightarrow{b}+\overrightarrow{c})$. If $\overrightarrow{b}$ If $\overrightarrow{b}$ is not parallel to $\overrightarrow{c}$ , then the angle between $\overrightarrow{a}$ and $\overrightarrow{b}$ is :
jeemain
2016
maths
set a
03042016
asked
Mar 21, 2017
by
meena.p
1
answer
If the line, $\large\frac{x-3}{2} =\frac{y+2}{-1}=\frac{z-4}{3}$ lies in the plane,$lx + my - z = 9,$ then $l^2+m^2$ is equal to :
jeemain
2016
maths
set a
03042016
asked
Mar 21, 2017
by
meena.p
1
answer
The eccentricity of the hyperbola whose length of the latus rectum is equal to 8 and the length of its conjugate axis is equal to half the distance between its foci, is:
jeemain
2016
maths
set a
03042016
asked
Mar 21, 2017
by
meena.p
1
answer
Let P be the point on the parabola, $y^2= 8x$ which is at a minimum distance from the centre $C$ of the circle, $x^2+(y + 6)^2= 1.$ Then the equation of the circle, passing through C and having its centre at P is:
jeemain
2016
maths
set a
03042016
asked
Mar 21, 2017
by
meena.p
1
answer
If one of the diameters of the circle, given by the equation, $x^2 + y^2-4x+6y -12 = 0,$ is a chord of a circle S, whose centre is at $(-3, 2),$ then the radius of S is:
jeemain
2016
maths
set a
03042016
asked
Mar 21, 2017
by
meena.p
1
answer
The centres of those circles which touch the circle, $x^2+y^2- 8x -8y-4 = 0,$ externally and also touch the x-axis, lie on:
jeemain
2016
maths
set a
03042016
asked
Mar 21, 2017
by
meena.p
1
answer
Two sides of a rhombus are along the lines, $x = y + 1 = 0$ and $7x - y - 5 = 0$. If its diagonals intersect at $(-1, -2)$, then which one of the following is a vertex of this rhombus?
jeemain
2016
maths
set a
03042016
asked
Mar 21, 2017
by
meena.p
1
answer
If a curve $y = f(x)$ passes through the point $(1, -1)$ and satisfies the differential equation,$y(1 + xy) dx = x dy,$ then $f\bigg(\large\frac{-1}{2}\bigg)$ is equal to :
jeemain
2016
maths
set a
03042016
asked
Mar 20, 2017
by
meena.p
1
answer
The area (in sq. units) of the region $\{(x,y):y^2 \leq 2x $ and $ x^2+y^2 \geq 4x, x \leq 0, y \geq 0 \} $ is
jeemain
2016
maths
set a
03042016
asked
Mar 20, 2017
by
meena.p
1
answer
$\lim_\limits{n \to \infty} \bigg( \large\frac{(n-1)(n+2)....3n}{n^{2n}}\bigg)^{1/n}$ is eaual to
jeemain
2016
maths
set a
03042016
asked
Mar 20, 2017
by
meena.p
1
answer
The integral $\int \large\frac{2x^{12} +5x^{9}}{(x^2+x^3+1)^3}$$dx$ is equal to
jeemain
2016
maths
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03042016
asked
Mar 17, 2017
by
meena.p
1
answer
A wire of length $2$ units is cut into two parts which are bent respectively to form a square of side = x units and a circle of radius = r units. If the sum of the areas of the square and the circle so formed is minimum, then:
jeemain
2016
maths
set a
03042016
asked
Mar 16, 2017
by
meena.p
1
answer
Consider $f(x) = \tan ^{-1} \bigg( \sqrt{\Large\frac{1+ \sin x}{1- \sin x}}\bigg),$$x \in \bigg(0, \large\frac{\pi}{2} \bigg)$ A normal to $y = f(x)$ at $x =\large\frac{\pi}{6}$ also passes through the point:
jeemain
2016
maths
set a
03042016
asked
Mar 16, 2017
by
meena.p
1
answer
For $x \in R ,f(x) = | \log 2 - \sin x | $ and $g(x) =f(f(x))$, then
jeemain
2016
maths
set a
03042016
asked
Mar 16, 2017
by
meena.p
1
answer
Let $p = \lim \limits_{x \to 0+} (1+ \tan ^2 \sqrt x )^{1/2x}$ then long p is equal to
jeemain
2016
maths
set a
03042016
asked
Mar 16, 2017
by
meena.p
1
answer
If the sum of the first ten terms of the series $\bigg(1 \large\frac{3}{5}\bigg) \normalsize +\bigg(2 \large\frac{2}{5} \bigg)^2 \normalsize +\bigg(3 \large\frac{1}{5}\bigg)^2 \normalsize +4^2 +\bigg(4 \large\frac{4}{5} \bigg)^2 \normalsize +.....is\;\large\frac{16}{5}$$\;m$ then m is equal to
jeemain
2016
maths
set a
03042016
asked
Mar 16, 2017
by
meena.p
1
answer
If the $2^{nd},5^{th}$ and $9^{th}$ terms of a non-constant A.P. are in G.P., then the common ratio of this G.P. is:
jeemain
2016
maths
set a
03042016
asked
Mar 16, 2017
by
meena.p
1
answer
If the number of terms in the expansion of $\bigg(1- \large\frac{2}{x}+\frac{4}{x^2}\bigg)^n,x \neq 0,$ is 28, then the sum of the coefficients of all the terms in this expansion, is
jeemain
2016
maths
set a
03042016
asked
Mar 15, 2017
by
meena.p
1
answer
If all the words (with or without meaning) having five letters, formed using the letters of the word SMALL and arranged as in a dictionary; then the position of the word SMALL is:
jeemain
2016
maths
set a
03042016
asked
Mar 15, 2017
by
meena.p
1
answer
The system of linear equations <br> $x + \lambda y - z = 0 \\\lambda x - y - z = 0 \\x + y - \lambda z = 0$ has a non-trivial solution for:
jeemain
2016
maths
set a
03042016
asked
Mar 15, 2017
by
meena.p
1
answer
If $A =\begin{bmatrix} 5a & -b \\ 3 & 2 \end{bmatrix}$ and $A \;adj A = AA^T$, then $5a+b$ is equal to
jeemain
2016
maths
set a
03042016
asked
Mar 15, 2017
by
meena.p
1
answer
The sum of all real values of x satisfying the equation $(x^2-5x+5)^{x^2+4x-60}=1$ is :
jeemain
2016
maths
set a
03042016
asked
Mar 15, 2017
by
meena.p
1
answer
A value of $\theta$ for which $ \large\frac{2+3 i \sin \theta}{1- 2 i \sin \theta}$ is purely imaginary , is
jeemain
2016
maths
set a
03042016
asked
Mar 15, 2017
by
meena.p
1
answer
If $f(x) +2y \bigg(\large\frac{1}{x}\bigg)$$=3x,x \neq 0$ and $S=\{x \in R:f(x)=f(-x)\}$ then S:
jeemain
2016
maths
set a
03042016
asked
Mar 15, 2017
by
meena.p
1
answer
The hottest region of Bunsen flame shown in the figure below is :
jeemain
2016
chemistry
set a
03042016
asked
Mar 14, 2017
by
meena.p
1
answer
Which of the following is an anionic detergent ?
jeemain
2016
chemistry
set a
03042016
asked
Mar 14, 2017
by
meena.p
1
answer
Thiol group is present in :
jeemain
2016
chemistry
set a
03042016
asked
Mar 14, 2017
by
meena.p
1
answer
Which of the following statements about low density polythene is FALSE ?
jeemain
2016
chemistry
set a
03042016
asked
Mar 14, 2017
by
meena.p
1
answer
In the Hofmann bromamide degradation reaction, the number of moles of $NaOH$ and $Br_2$ used per mole of amine produced are :
jeemain
2016
chemistry
set a
03042016
asked
Mar 14, 2017
by
meena.p
1
answer
The reaction of propene with $HOCl(Cl_2 + H_2O)$ proceeds through the intermediate :
jeemain
2016
chemistry
set a
03042016
asked
Mar 14, 2017
by
meena.p
1
answer
2-chloro-2-methylpentane on reaction with sodium methoxide in methanol yields :
jeemain
2016
chemistry
set a
03042016
asked
Mar 14, 2017
by
meena.p
1
answer
The absolute configuration of
jeemain
2016
chemistry
set a
03042016
asked
Mar 14, 2017
by
meena.p
1
answer
The product of the reaction given below is :
jeemain
2016
chemistry
set a
03042016
asked
Mar 14, 2017
by
meena.p
1
answer
The distillation technique most suited for separating glycerol from spent - lye in the soap industry is :
jeemain
2016
chemistry
set a
03042016
asked
Mar 14, 2017
by
meena.p
1
answer
The concentration of fluoride, lead, nitrate and iron in a water sample from an underground lake was found to be $1000\;ppb, 40\;ppb, 100\; ppm$ and $0.2\;ppm$, respectively. This water is unsuitable for drinking due to high concentration of :
jeemain
2016
chemistry
set a
03042016
asked
Mar 14, 2017
by
meena.p
1
answer
Which one of the following complexes shows optical isomerism ?
jeemain
2016
chemistry
set a
03042016
asked
Mar 14, 2017
by
meena.p
1
answer
The pair having the same magnetic moment is :[At. No : $Cr= 24, Mn=25, Fe=26,Co=27$]
jeemain
2016
chemistry
set a
03042016
asked
Mar 14, 2017
by
meena.p
1
answer
Which of the following compounds is metallic and ferromagnetic ?
jeemain
2016
chemistry
set a
03042016
asked
Mar 13, 2017
by
meena.p
1
answer
The pair in which phosphorous atoms have a formal oxidation state of $+ 3$ is :
jeemain
2016
chemistry
set a
03042016
asked
Mar 13, 2017
by
meena.p
1
answer
The reaction of zinc with dilute and concentrated nitric acid, respectively produces :
jeemain
2016
chemistry
set a
03042016
asked
Mar 13, 2017
by
meena.p
1
answer
The main oxides formed on combustion of $Li, Na$ and $K$ in excess of air are, respectively :
jeemain
2016
chemistry
set a
03042016
asked
Mar 13, 2017
by
meena.p
1
answer
Which one of the following statements about water is FALSE ?
jeemain
2016
chemistry
set a
03042016
asked
Mar 13, 2017
by
meena.p
1
answer
Which one of the following ores is best concentrated by froth floatation method ?
jeemain
2016
chemistry
set a
03042016
asked
Mar 13, 2017
by
meena.p
1
answer
Which of the following atoms has the highest first ionization energy ?
jeemain
2016
chemistry
set a
03042016
asked
Mar 13, 2017
by
meena.p
1
answer
For a linear plot of log (x/m) versus log p in a Freundlich adsorption isotherm, which of the following statements is correct ? (k and n are constants)
jeemain
2016
chemistry
set a
03042016
asked
Mar 13, 2017
by
meena.p
1
answer
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