Question stringlengths 2 3k | label int64 0 1 |
|---|---|
Why do some smart and wise people think Earth is flat? | 0 |
Can microdosing psychedelics be a social lubricant in the same way as alcohol? | 0 |
51. Energy of the state $S_{1}$ in units of the hydrogen atom ground state energy is :
(a) 0.75
(b) 1.50
(c) 2.25
(d) 4.50 | 1 |
16. Let $E=\{1,2,3,4\}$ and $F=\{1,2\}$. Then the number of onto functions from $E$ to $F$ is
a. 14
h 16
c. 12
d 8
(IIT-JEE, 2001) | 1 |
How can I apply for pan card and what are the documents we need to apply? | 0 |
1. A vector is not changed if
(a) it is rotated through an arbitrary angle
(b) it is multiplied by an arbitrary scalar
(c) it is cross multiplied by a unit vector
(d) it is slid parallel to itself. | 1 |
8. The statement that is INCORRECT about the interstitial compounds is
(a) they are chemically reactive
(b) they are very hard
(c) they have metallic conductivity.
(d) they have high melting points. | 1 |
What is the best way to hide my activities from my Facebook friend who has added me as a "close friend" without removing him from friends list? | 0 |
My friend my sister in low my husbund betrede me what can I do? | 0 |
How do l see who viewed my videos on Instagram? | 0 |
10. If $f(a-x)=f(a+x)$ and $f(b-x)=f(b+x)$ for all real $x$, where $a, b(a>b)$ are constants, then prove that $f(x)$ is a periodic function. | 1 |
4. The mechanism of $\mathrm{S}_{\mathrm{N}} 1$ reaction is given as :
A student writes general characteristics based on the given mechanism as
(1) The reaction is favoured by weak nu... | 1 |
93 In June 1985, a laser beam was sent out from the Air Force Optical Station on Maui, Hawaii, and reflected back from the shuttle Discovery as it sped by 354 km overhead. The diameter of the central maximum of the beam at the shuttle position was said to be 9.1 m , and the beam wavelength was 500 nm . What is the effe... | 1 |
3.
| Column I | Column II |
| :---: | :---: |
| a. If $\|\vec{a}\|=\|\vec{b}\|=\|\vec{c}\|$, angle between each pair of vectors is $\frac{\pi}{3}$ and <br> $\|\vec{a}+\vec{b}+\vec{c}\|=\sqrt{6}$, then $2\|\vec{a}\|$ is equal to | p. 3 |
| b. If $\vec{a}$ is perpendicular to $\vec{b}+\vec{c}, \vec{b}$ is perpendicular ... | 1 |
How does literary fiction aid the person who reads it? | 0 |
27. The value of $\int_{-\pi}^{\pi} \frac{\cos ^{2} x}{1+a^{x}} d x, a>0$, is
(a) $\pi$
(b) $a \pi$
(c) $\frac{\pi}{2}$
(d) $2 \pi$ | 1 |
What reasons did and do some people give for hating Jews? | 0 |
Example 14.14 Find time period of a vertical spring-block system by both methods. | 1 |
Where can I find affordable wedding photo booth in Australia? | 0 |
When did Britain formally acquire the Cape Colony? | 0 |
16. Which one of the following statements about packing in solids is incorrect ?
[Main Online April 22, 2013]
(a) Coordination number in $b c c$ mode of packing is 8 .
(b) Coordination number in $h c p$ mode of packing is 12
(c) Void space in $h c p$ mode of packing is $32 \%$.
(d) Void space is $c c p$ mode of pa... | 1 |
What percentage of Hyderabad's employed are employed informally? | 0 |
What are the basic written records of the Mauryans? | 0 |
(a) Calculate the volume occupied by 1 mole of $\mathrm{He}, \mathrm{H}$ and O atoms at NTP. | 1 |
What are boundaries? | 0 |
What became the dominant form of business organization? | 0 |
How do Jews rule the world? | 0 |
If God didn't create a way to save mankind from eternal death from sin through Jesus Christ, would we all have died in Adam and Eve? | 0 |
How would you describe the perfect boyfriend? | 0 |
44. A rectangular billiard table has vertices
at $P(0,0), Q$ $(0,7), R(10,7)$ and $S(10,0)$. A small billiard ball starts at $M(3,4)$ and moves in a straight line to the top of the table, bounces to the right side of the table, then comes to rest at $N(7,1)$. The $y$-coordinate of the point where it hits the right sid... | 1 |
95. The end points of two normal chords of a parabola are concyclic, then the tangents at the feet of the normals will intersect at
a. tangent at vertex of the parabola
b. axis of the parabola
c. directrix of the parabola
d. none of these | 1 |
Where did the British initially establish a trading base? | 0 |
What websites have good articles and are like magazines of some sort? | 0 |
How do I regain hope about life when everything seems meaningless? | 0 |
11. If $A(-4,0,3)$ and $B(14,2,-5)$, then which one of the following points lie on the bisector of the angle between $\overrightarrow{O A}$ and $\overrightarrow{O B}$ ( $O$ is the origin of reference)?
a. $(2,2,4)$
b. $(2,11,5)$
c. $(-3,-3,-6)$
d. $(1,1,2)$ | 1 |
42. For $a>b>c>0$, the distance between $(1,1)$ and the point of intersection of the lines $a x+b y+c=0$ and $b x+a y+c=0$ is less than $2 \sqrt{2}$. Then,
(a) $a+b-c>0$
(b) $a-b+c<0$
(c) $a-b+c>0$
(d) $a+b-c<0$ | 1 |
8. If $f(x)=2$ has at least one real root, then
a. $\lambda \in[1,4]$
b. $\lambda \in[-1,2]$
c. $\lambda \in[0,1]$
d. $\lambda \in[1,3]$ | 1 |
How is the role of a product manager? | 0 |
11. In order to increase the resistance of a given wire of uniform cross-section to four times its value, a fraction of its length is stretched uniformly till the full length of the wire becomes $\frac{3}{2}$ times the original length. What is the value of this fraction?
(a) $\frac{1}{4}$
(b) $\frac{1}{8}$
(c) $\fra... | 1 |
What are the ways to get a job in IBM? | 0 |
16. The determinant $\left|\begin{array}{ccc}y^{2} & -x y & x^{2} \\ a & b & c \\ a^{\prime} & b^{\prime} & c^{\prime}\end{array}\right|$ is equal to
a. $\left|\begin{array}{cc}b x+a y & c x+b y \\ b^{\prime} x+a^{\prime} y & c^{\prime} x+b^{\prime} y\end{array}\right|$
b. $\left|\begin{array}{cc}a x+b y & b x+c y \\ a... | 1 |
9. $A D$ divides $E C$ in the ratio
a. $\cos \frac{2 \pi}{5}: 1$
b. $\cos \frac{3 \pi}{5}: 1$
c. $1: 2 \cos \frac{2 \pi}{5}$
d. $1: 2$ | 1 |
Is anal sex painful? If so, what are some tips for reducing or eliminating pain? | 0 |
3.  | 1 |
How much do PHP earn in India or UAE? | 0 |
37. Let $h(x)=\min \left\{x, x^{2}\right\}$ for every real number of $x$, then
(a) $h$ is continuous for all $x$
$(1998,2 \mathrm{M})$
(b) $h$ is differentiable for all $x$
(c) $h^{\prime}(x)=1, \forall x>1$
(d) $h$ is not differentiable at two values of $x$ | 1 |
How is the picture of our Milky Way galaxy taken from the outside if we are inside the galaxy? | 0 |
9. The magnitude of the vector product of two vectors $|\mathbf{A}|$ and $|\mathbf{B}|$ may be
(More than one correct options)
(a) greater than $A B$
(b) equal to $A B$
(c) less than $A B$
(d) equal to zero | 1 |
How can I build confidence? | 0 |
10. Number of solutions of $\sin 5 x+\sin 3 x+\sin x=0$ for $0 \leq x \leq \pi$ is
a. 1
h. 2
c. 3
d none of these | 1 |
15. The types of bonds present in $\mathrm{CuSO}_{4} \cdot 5 \mathrm{H}_{2} \mathrm{O}$ are only
(a) electrovalent and covalent
(b) electrovalent and coordinate covalent
(c) electrovalent, covalent and coordinate covalent
(d) covalent and coordinate covalent | 1 |
How many states are linked to from highways in Hyderabad? | 0 |
How hard is it to jailbreak an iPhone 4? | 0 |
9. Expand using Binomial Theorem $\left(1+\frac{x}{2}-\frac{2}{x}\right)^{4}, x \neq 0$. | 1 |
What are some catchy names for an application/tool that tracks or deals with the pricing configuration of a company? | 0 |
-56 Suppose that two tanks, 1 and 2, each with a large opening at the top, contain different liquids. A small hole is made in the side of each tank at the same depth $h$ below the liquid surface, but the hole in tank 1 has half the cross-sectional area of the hole in tank 2. (a) What is the ratio $\rho_{1} / \rho_{2}$ ... | 1 |
1. The presence of soluble fluoride ion upto $1 \mathrm{ppm}$ concentration in drinking water, is :
(a) harmful for teeth
(b) harmful to skin
(c) harmful to bones
(d) safe for teeth | 1 |
10. The expression for the mass of the material remaining at
$\angle 0$ any time $t$
$$
\begin{array}{ll}
\text { a. } N=50 e^{-(1 / 2)((10.9) t} & \text { b. } 50 e^{-(1 / 4)(\ln 9) t} \\
\text { c. } N=50 e^{-(\ln 0.9) t} & \text { d. None of these }
\end{array}
$$ | 1 |
32.
Number of resonating structures of the given compound are?
(A) 3
(B) 4
(C) 5
(D) 6 | 1 |
Example 3 Let the sequence $a_{n}$ be defined as follows:
$$
a_{1}=1, a_{n}=a_{n-1}+2 \text { for } n \geq 2
$$
Find first five terms and write corresponding series. | 1 |
What was the shipping services imported by Greece in 2011 worth? | 0 |
What was Britain's foreign policy called? | 0 |
Ex. 45. The precipitate of $\mathrm{CaF}_{2}\left(K_{\mathrm{sp}}=1.7 \times 10^{-10}\right)$ is obtained by mixing equal volumes of which of the following?
(a) $10^{-4} \mathrm{M} \mathrm{Ca}^{2+}+10^{-4} \mathrm{MF}^{-}$
(b) $10^{-2} \mathrm{M} \mathrm{Ca}^{2+}+10^{-3} \mathrm{MF}^{-}$
(c) $10^{-5} \mathrm{MCa}^{2+}+... | 1 |
Which is the best mobile under 6000Rs in India? | 0 |
How do I write a post Quora? | 0 |
What is your Dream XI in football (soccer) since 2000? | 0 |
What examples of natural resources do some corrupt officials in government take? | 0 |
Which place is good for trip in Kerala? | 0 |
What can I do to lose 10 pounds in 5 days? | 0 |
How do I say client's profile in a more professional way? | 0 |
9. The heat generated in a circuit is dependent upon the resistance, current and time for which the current is flown. If the error in measuring the above are $1 \%, 2 \%$ and $1 \%$ respectively, then maximum error in measuring the heat is
(a) $8 \%$
(b) $6 \%$
(c) $18 \%$
(d) $12 \%$ | 1 |
What can I do if my boyfriend is ignoring me after a fight? | 0 |
11. Total number of lone pair of electrons with central atom in $\mathrm{XeOF}_{4}$ is
(a) 0
(b) 1
(c) 2
(d) 3 | 1 |
5. Find the minimum value of $2^{\sin x}+2^{\cos x}$. | 1 |
23. One mole of an ideal gas is taken from $a$ to $b$ along two paths denoted by the solid and the dashed lines as shown in the graphs below. If the work done along the solid line path $w_{s}$ and that along the dotted line path is $w_{d}$, then the integer closest to the ratio $w_{d} / w_{s}$ is :
 Relation R in the set $\mathbf{Z}$ of all integers defined as
$$
\mathrm{R}=\{(x, y): x-y \text { is an integer }\}
$$ | 1 |
Who is considered to be the first comic creator in America? | 0 |
What is a new business to start with less investment? | 0 |
What event stoked fears of communist plots in India? | 0 |
Is teleportation possible? | 0 |
Example 36.3
A magnet is $10 \mathrm{~cm}$ long and its pole strength is 120 CGS units ( 1 CGS unit of pole strength $=0 \cdot 1 \mathrm{~A} \mathrm{~m}$ ). Find the magnitude of the magnetic field $B$ at a point on its axis at a distance $20 \mathrm{~cm}$ from it. | 1 |
10.13 Potassium carbonate cannot be prepared by Solvay process. Why ? | 1 |
What is the funniest book that you have read ever? | 0 |
13. Among the following, the incorrect statement is:
[Main Online April 16, 2018]
(a) Cellulose and amylose have 1,4 -glycosidic linkage
(b) Lactose contains $\beta$-D-galactose and $\beta$-D-glucose
(c) Maltose and lactose have 1,4-glycosidic linkage
(d) Sucrose and amylose have 1,2 -glycosidic linkage | 1 |
5. Which of the following compounds will form significant amount of meta product during mono-nitration reaction?
 | 1 |
1. If the coefficients of $5^{\mathrm{lh}}, 6^{\mathrm{lh}}$ and $7^{\mathrm{hh}}$ terms in the expansion of $(1+x)^{n}$ be in A.P., then $n=$
a. 7 only
b. 14 only
c. 7 or 14
d. none of these | 1 |
15. A reaction of cobalt(III) chloride and ethylenediamine in a $1: 2$ mole ratio generates two isomeric products A (violet coloured) and B (green coloured). A can show optical activity, but, B is optically inactive. What type of isomers does A and B represent?
[Main Jan. 10, 2019 (II)]
(a) Geometrical isomers
(b) C... | 1 |
What are ways of earning money online? | 0 |
45. If the rate constant for a reaction represented by $2 \mathrm{HI} \rightarrow \mathrm{H}_{2}+\mathrm{I}_{2}$ is denoted by $k$ then for the same reaction if represented by $\mathrm{HI} \rightarrow \frac{1}{2} \mathrm{H}_{2}+\frac{1}{2} \mathrm{I}_{2}$, the rate constant shall be equal to
(a) $k$
(b) $2 k$
(c) $k / ... | 1 |
Why am I continuously having dreams about loosing my tooth? | 0 |
27. A piece of wood is taken deep inside a long column of water and released. It will move up
(a) with a constant upward acceleration
(b) with a decreasing upward acceleration
(c) with a deceleration
(d) with a uniform velocity. | 1 |
64. A plane is parallel to two lines whose direction ratios are $(1,0,-1)$ and $(-1,1,0)$ and it contains the point $(1,1,1)$. If it cuts coordinate axes at $A, B, C$. Then find the volume of the tetrahedron $O A B C$. | 1 |
30. If $E_{1}, E_{2}$ and $E_{3}$ represent respectively the kinetic energies of an electron, an $\alpha$-particle and a proton each having same de-Broglie wavelength, then
(a) $E_{1}>E_{3}>E_{2}$
(b) $E_{2}>E_{3}>E_{1}$
(c) $E_{1}>E_{2}>E_{3}$
(d) $E_{1}=E_{2}=E_{3}$ | 1 |
How do I get a girlfriend? I'm 15 male and never had one before. | 0 |
Why do Chrome tabs lock up on a Windows 7 wakeup from hibernate mode? | 0 |
How is a d-pi d-pi bond formed? Elaborate. | 0 |
4.20 For the decomposition of azoisopropane to hexane and nitrogen at 543 K , the following data are obtained.
\begin{tabular}{|c|c|}
\hline$t(\mathrm{sec})$ & $\mathrm{P}(\mathrm{mm}$ of Hg$)$ \\
\hline 0 & 35.0 \\
\hline 360 & 54.0 \\
\hline 720 & 63.0 \\
\hline
\end{tabular}
Calculate the rate constant. | 1 |
22. Number of structural isomers of $\mathrm{C}_{4} \mathrm{H}_{7} \mathrm{Cl}$ are :
(A) 5
(B) 7
(C) 8
(D) 12 | 1 |
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