Ask Questions, Get Answers
Menu
X
JEEMAIN Crash Practice
15 Test Series
NEET Crash Practice
15 Test Series
CBSE XII
Math
JEEMAIN
Math
Physics
Chemistry
Practice Test Series
CBSE XI
Math
NEET
Physics
Chemistry
Biology - XII
Biology - XI
Olympiad class V
Math - 5 Test Series
Olympiad class VI
Math - 5 Test Series
studyplans
JEEMAIN Crash Practice
15 Test Series
NEET Crash Practice
15 Test Series
CBSE XII
Math
JEEMAIN
Math
Physics
Chemistry
Practice Test Series
CBSE XI
Math
NEET
Physics
Chemistry
Biology - XII
Biology - XI
Olympiad class V
Math - 5 Test Series
Olympiad class VI
Math - 5 Test Series
mobile
exams
ask
sample papers
tutors
pricing
login
X
Recent questions and answers in JEEMAIN-2017
ASK
Home
>>
JEEMAIN and NEET
>>
JEEMAIN-2017
Let the refractive index of a denser medium with respect to a rarer medium be $n_{12}$ and its critical angle be $\theta C$ . At an angle of incidence A when light is travelling from denser medium to rarer medium, a part of the light is reflected and the rest is refracted and the angle between reflected and refracted rays is 908. Angle A is given by :
jeemain
2017
physics
set b
08042017
asked
Aug 9
by
meena.p
0
answers
Magnetic field in a plane electromagnetic wave is given by $\overrightarrow{B} =B_0 \sin (kx+ \omega t) \hat j T$ Expression for corresponding electric field will be : Where c is speed of light.
jeemain
2017
physics
set b
08042017
asked
Aug 9
by
meena.p
0
answers
The following statement $(p \to q)\to [(\approx p \to q)\to q]$ is :
jeemain
2017
maths
set a
02042017
asked
Aug 4
by
meena.p
0
answers
Let a vertical tower AB have its end A on the level ground. Let C be the mid-point of AB and P be a point on the ground such that $AP=2AB$. If $\angle BPC=\beta$, then $\tan \beta$ is equal to :
jeemain
2017
maths
set a
02042017
asked
Aug 4
by
meena.p
0
answers
If $5(tan^2 x−cos^2 x)=2cos 2x+9$, then the value of $\cos 4x$ is :
jeemain
2017
maths
set a
02042017
asked
Aug 4
by
meena.p
0
answers
If two different numbers are taken from the set {0, 1, 2, 3, ......, 10}; then the probability that their sum as well as absolute difference are both multiple of 4, is :
jeemain
2017
maths
set a
02042017
asked
Aug 4
by
meena.p
0
answers
For three events A, B and C, P(Exactly one of A or B occurs) =P(Exactly one of B or C occurs) =P(Exactly one of C or A occurs)= $\large\frac{1}{4}$ and P(All the three events occur simultaneously)=$\large\frac{1}{16}$.Then the probability that at least one of the events occurs, is :
jeemain
2017
maths
set a
02042017
asked
Aug 4
by
meena.p
0
answers
A box contains 15 green and 10 yellow balls. If 10 balls are randomly drawn, one-by-one, with replacement, then the variance of the number of green balls drawn is :
jeemain-2017jeemain
2017
maths
set a
02042017
asked
Aug 4
by
meena.p
0
answers
Let $\overrightarrow{a}= 2\hat i +\hat j -2 \hat k$ and $\overrightarrow{b}= \hat i +\hat j $. Let $\overrightarrow{c}$ be a vector such that $\bigg|\overrightarrow{c}-\overrightarrow{a} \bigg|= 3,\bigg|(\overrightarrow{a} \times \overrightarrow{b} ) \times \overrightarrow{c} \bigg|=3$and the angle between $\overrightarrow{c}$ and $\overrightarrow{a} \times \overrightarrow{b}$ be $30^{\circ}$. Then $\overrightarrow{a}.\overrightarrow{c}$ is equal to :
jeemain
2017
maths
set a
02042017
asked
Aug 4
by
meena.p
0
answers
If the image of the point P(1, −2, 3) in the plane, $2x+3y−4z+22=0$ measured parallel to the line, $\large\frac{x}{1}=\frac{y}{4}=\frac{z}{5}$ is Q, then PQ is equal to :
jeemain
2017
maths
set a
02042017
asked
Aug 4
by
meena.p
0
answers
The distance of the point (1, 3, −7) from the plane passing through the point $(1, −1, −1),$ having normal perpendicular to both the lines $\large\frac{x-1}{1}=\frac{y+2}{-2}=\frac{z-4}{3}$ and $\large\frac{x-2}{2}=\frac{y-1}{-1}=\frac{z+7}{-1}$, is:
jeemain
2017
maths
set a
02042017
asked
Aug 4
by
meena.p
0
answers
A hyperbola passes through the point $P( \sqrt {2} , \sqrt{3} )$ and has foci at $(\pm 2, 0)$. Then the tangent to this hyperbola at P also passes through the point :
jeemain
2017
maths
set a
02042017
asked
Aug 4
by
meena.p
0
answers
The eccentricity of an ellipse whose centre is at the origin is $\large\frac{1}{2}$ . If one of its directrices is $x=−4,$ then the equation of the normal to it at $\bigg(1,\large\frac{3}{2}\bigg)$ is :
jeemain
2017
maths
set a
02042017
asked
Aug 4
by
meena.p
0
answers
The radius of a circle, having minimum area, which touches the curve $y=4−x^2$ and the lines, $y=|x|$ is :
jeemain
2017
maths
set a
02042017
asked
Aug 4
by
meena.p
0
answers
Let k be an integer such that the triangle with vertices (k, −3k), (5, k) and (−k, 2) has area 28 sq. units. Then the orthocentre of this triangle is at the point:
jeemain
2017
maths
set a
02042017
asked
Aug 4
by
meena.p
0
answers
If $(2+\sin x) \large\frac{dy}{dx}$$+(y+1) \cos x=0$ and $y(0)=1$, then $y \bigg(\large\frac{\pi}{2} \bigg)$ is equal to :
jeemain
2017
maths
set a
02042017
asked
Aug 4
by
meena.p
0
answers
The area (in sq. units) of the region $\{(x, y) : x/0, x+y≤3, x2≤4y \;and\; y≤1+ x \}$ is :
jeemain
2017
maths
set a
02042017
asked
Aug 4
by
meena.p
0
answers
The integral $\int \limits_{\pi/4}^{3 \pi/4} \large\frac{dx}{1+\cos x}$ is equal to :
jeemain
2017
maths
set a
02042017
asked
Aug 4
by
meena.p
0
answers
Let $ I_n= \int \tan^n x dx , (n > 1)$ If $I_4+I_6=a \tan^5 x+bx^5+C$ where C is a constant of integration, then the ordered pair (a, b) is equal to :
jeemain
2017
maths
set a
02042017
asked
Aug 3
by
meena.p
0
answers
Twenty meters of wire is available for fencing off a flower-bed in the form of a circular sector. Then the maximum area (in sq. m) of the flower-bed, is :
jeemain
2017
maths
set a
02042017
asked
Aug 3
by
meena.p
0
answers
The normal to the curve $y(x−2)(x−3)=x+6$ at the point where the curve intersects the y-axis passes through the point :
jeemain
2017
maths
set a
02042017
asked
Aug 3
by
meena.p
0
answers
If for $x \in \bigg( 0, \large\frac{1}{4} \bigg)$ the derivative of $\tan ^{-1} \bigg( \large\frac{6x \sqrt x}{1-9x^3}\bigg)$ is $\sqrt x .g(x) $ then $g(x)$ equals
jeemain
2017
maths
set a
02042017
asked
Aug 3
by
meena.p
0
answers
$\lim_{x \to \large\frac{\pi}{2}} \Large\frac{\cot x - \cos x}{(\pi -2x)^3}$ equals :
jeemain
2017
maths
set a
02042017
asked
Aug 1
by
meena.p
0
answers
Let $a, b, c \in R$. If $f(x)=ax^2 +bx+c$ is such that $a+b+c=3$ and $f (x+y)=f(x)+f(y)+xy, ∀ x, y \in R$, then $\sum\limits_{n=1}^{90} f(n) $ is equal to :
jeemain
2017
maths
set a
02042017
asked
Aug 1
by
meena.p
0
answers
For any three positive real numbers a, b and c, $9(25a^2+b^2) +25(c^2−3ac)=15b(3a+c)$. Then
jeemain
2017
maths
set a
02042017
asked
Aug 1
by
meena.p
0
answers
The value of $(^{21}C_1 - ^{10} C_1) +(^{21} C_2 -^{10}C_2) +(^{21}C_3 - ^{10} C_3) +(^{21}C_4 - ^{10} C_4) +.....+ (^{21}C_{10} - ^{10} C_{10}) $ is :
jeemain
2017
maths
set a
02042017
asked
Aug 1
by
meena.p
0
answers
A man X has 7 friends, 4 of them are ladies and 3 are men. His wife Y also has 7 friends, 3 of them are ladies and 4 are men.Assume X and Y have no common friends.Then the total number of ways in which X and Y together can throw a party inviting 3 ladies and 3 men, so that 3 friends of each of X and Y are in this party, is :
jeemain
2017
maths
set a
02042017
asked
Jul 31
by
meena.p
0
answers
If S is the set of distinct values of ‘b’ for which the following system of linear equations$x+y+z=1 \\ x+ay+z=1 \\ ax+by+z=0 $ has no solution, then S is :
jeemain
2017
maths
set a
02042017
asked
Jul 31
by
meena.p
0
answers
If $A= \begin{bmatrix} 2 & -3 \\ -4 & 1 \end{bmatrix}$ then adj $(3A^2+12A)$ is equal to :
jeemain
2017
maths
set a
02042017
asked
Jul 31
by
meena.p
0
answers
Let $\omega$ be a complex number such that $2 \omega +1=z$ where $z= \sqrt{-3} $ . $\begin{bmatrix} 1 & 1 & 1 \\ 1 & -\omega^2-1 & \omega^2 \\ 1 & \omega^2 & \omega^7 \end{bmatrix}=3k$ then k is equal to :
jeemain
2017
maths
set a
02042017
asked
Jul 31
by
meena.p
0
answers
If, for a positive integer n, the quadratic equation, $ x(x+1)+(x+1)(x+2)+....+(x+ \bar{n- 1}) (x+n)=10n$ has two consecutive integral solutions, then n is equal to :
jeemain
2017
maths
set a
02042017
asked
Jul 31
by
meena.p
0
answers
The function $f: R \to \bigg[ -\large\frac{1}{2} ,\frac{1}{2} \bigg]$ defined as $f(x) = \large\frac{x}{1+x^2}$ is
jeemain
2017
maths
set a
02042017
asked
Jul 31
by
meena.p
0
answers
The major product obtained in the following reaction is :
jeemain
2017
chemistry
set a
02042017
asked
Jul 31
by
meena.p
0
answers
The correct sequence of reagents for the following conversion will be :
jeemain
2017
chemistry
set a
02042017
asked
Jul 31
by
meena.p
0
answers
3-Methyl-pent-2-ene on reaction with HBr in presence of peroxide forms an addition product. The number of possible stereoisomers for the product is :
jeemain
2017
chemistry
set a
02042017
asked
Jul 31
by
meena.p
0
answers
Which of the following compounds will behave as a reducing sugar in an aqueous $KOH$ solution ?
jeemain
2017
chemistry
set a
02042017
asked
Jul 31
by
meena.p
0
answers
The major product obtained in the following reaction is :
jeemain
2017
chemistry
set a
02042017
asked
Jul 31
by
meena.p
0
answers
The increasing order of the reactivity of the following halides for the $S_N1$ reaction is :
jeemain
2017
chemistry
set a
02042017
asked
Jul 31
by
meena.p
0
answers
Which of the following molecules is least resonance stabilized ?
jeemain
2017
chemistry
set a
02042017
asked
Jul 31
by
meena.p
0
answers
The formation of which of the following polymers involves hydrolysis reaction ?
jeemain
2017
chemistry
set a
02042017
asked
Jul 31
by
meena.p
0
answers
Which of the following, upon treatment with tert-BuONa followed by addition of bromine water, fails to decolourize the colour of bromine ?
jeemain
2017
chemistry
set a
02042017
asked
Jul 31
by
meena.p
0
answers
Which of the following compounds will form significant amount of meta product during mono-nitration reaction ?
jeemain
2017
chemistry
set a
02042017
asked
Jul 31
by
meena.p
0
answers
On treatment of 100 mL of 0.1 M solution of $CoCl_3.6H_2O$ with excess $AgNO_3$; $1.2 \times 10^{22}$ ions are precipitated. The complex is :
jeemain
2017
chemistry
set a
02042017
asked
Jul 28
by
meena.p
0
answers
The most abundant elements by mass in the body of a healthy human adult are : Oxygen (61.4%); Carbon (22.9%), Hydrogen (10.0%); and Nitrogen (2.6%). The weight which a 75 kg person would gain if all $^1\;H$ atoms are replaced by $^2 H$ atoms is :
jeemain
2017
chemistry
set a
02042017
asked
Jul 28
by
meena.p
0
answers
Sodium salt of an organic acid ‘X’ produces effervescence with conc. $H_2SO_4$. ‘X’ reacts with the acidified aqueous $CaCl_2$ solution to give a white precipitate which decolourises acidic solution of $KMnO_4$ ‘X’ is :
jeemain
2017
chemistry
set a
02042017
asked
Jul 28
by
meena.p
0
answers
In the following reactions, ZnO is respectively acting as a/an : $(a) ZnO+Na_2 O → Na_2ZnO_2 \\ (b) ZnO+CO_2 → ZnCO_3$
jeemain
2017
chemistry
set a
02042017
asked
Jul 28
by
meena.p
0
answers
The products obtained when chlorine gas reacts with cold and dilute aqueous $NaOH$ are :
jeemain
2017
chemistry
set a
02042017
asked
Jul 28
by
meena.p
0
answers
The group having isoelectronic species is :
jeemain
2017
chemistry
set a
02042017
asked
Jul 28
by
meena.p
0
answers
A water sample has ppm level concentration of following anions $F^{-}= 10 ; SO_4^{2-}= 100 ; NO_3^{-}= 50$ The anion/anions that make/makes the water sample unsuitable for drinking is/are :
jeemain
2017
chemistry
set a
02042017
asked
Jul 28
by
meena.p
0
answers
Which of the following reactions is an example of a redox reaction ?
jeemain
2017
chemistry
set a
02042017
asked
Jul 28
by
meena.p
0
answers
To see more, click for all the
questions in this category
.
Ask Question
Tag:
Math
Phy
Chem
Bio
Other
SUBMIT QUESTION
►
Please Wait
Take Test
JEEMAIN Crash Practice
15 Test Series
NEET Crash Practice
15 Test Series
JEEMAIN
350+ TESTS
NEET
320+ TESTS
CBSE XI MATH
50+ TESTS
CBSE XII MATH
80+ TESTS
...
X