Question stringlengths 2 3k | label int64 0 1 |
|---|---|
5. The correct IUPAC name of $\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}\left(\mathrm{CH}_{3}\right) \mathrm{CH}\left(\mathrm{C}_{2} \mathrm{H}_{5}\right)_{2}$ is :
(A) 4-ethyl - 3-methyl hexane
(B) 3-ethyl - 4 methyl hexane
(C) 4-methyl - 3-ethyl hexane
(D) 2, 4-diethylpentane | 1 |
13. In $\triangle A B C, a^{2}+b^{2}+c^{2}=a c+a b \sqrt{3}$, then the triangle is
a. equilateral
b. isosceles
c. right angled
d none of these | 1 |
Ex. 11. The equilibrium concentrations of $\mathrm{A}, \mathrm{B}$ and C for the reaction $\mathrm{A} \rightleftharpoons \mathrm{B}+\mathrm{C}$ are $4 \cdot 6,2.3$ and 2.3 moles/L respectively at $25^{\circ} \mathrm{C}$. If 2 moles per litre of A are removed, calculate the equilibrium concentrations of $\mathrm{A}, \ma... | 1 |
26. The correct match between Item-I and Item - II is:
[Main Sep. 06, 2020 (II)]
Item - I
Item - II
(a) Natural rubber
(b) Neoprene
(I)
1, 3-butadiene + styrene
(II) 1,3-butadiene
+ acrylonitrile
(III) Chloroprene
(d) Buna-S
(IV) Isoprene
(c) Buna-N
(a) (A) - (III), (B) - (IV), (C) - (I), (D) - (II)
(b) (A) - (III)... | 1 |
The Bourbon Restoration followed what event? | 0 |
71. The extremities of the base of an isosceles triangle are $(2,0)$ and $(0,2)$. If the equation of one of the equal side is $x=2$, then equation of other equal side is
a. $x+y=2$
b. $x-y+2=0$
c. $y=2$
d. $2 x+y=2$ | 1 |
49. A small heavy block is attached to the lower end of a
light rod of length l which can be rotated about its
clamped upper end. What minimum horizontal velocity
should the block be given so that it moves in a complete
vertical circle ?  5.2
(b) 7.5
(c) 8.4
(d) 8.6 | 1 |
What is the best version of the Harry Potter audio books? Where can you download them? | 0 |
16. A particle is moving in a circle of radius $R$ in such a way that at any instant the normal and tangential component of its acceleration are equal. If its speed at $t=0$ is $v_{0}$. The time taken to complete the first revolution is
(a) $\frac{R}{v_{0}}$
(b) $\frac{R}{v_{0}} e^{-2 \pi}$
(c) $\frac{R}{v_{0}}\left(1-... | 1 |
7. In the earth-moon system, if $T_{1}$ and $T_{2}$ are period of revolution of earth and moon respectively about the centre of mass of the system then
(a) $T_{1}>T_{2}$
(b) $T_{1}=T_{2}$
(c) $T_{1}<T_{2}$
(d) Insufficient data | 1 |
12. A river is flowing from west to east at a speed of 5
metres per minute. A man on the south bank of the
river, capable of swimming at 10 metres per minute in
still water, wants to swim across the river in the shortest
time. He should swim in a direction (a) due north (b) 30° east of north
(c) 30° north of west (d) ... | 1 |
10. A long insulated copper wire is closely wound as a spiral of $N$ turns. The spiral has inner radius $a$ and outer radius $b$. The spiral lies in the $X-Y$ plane and a steady current $I$ flows through the wire. The $Z$-component of the magnetic field at the centre of the spiral is
 Find the ... | 1 |
How is the word 'somnolent' used in a sentence? | 0 |
How do I prepare for NEET in 8 months? | 0 |
The encounter with Arabic knowledge put Renaissance thinkers back in touch with the teachings of which ancient civilizations? | 0 |
How was insects evolved over the past one thousand years? | 0 |
What are natural resources? | 0 |
What is fullform of DNA? | 0 |
In what decade did sociologists focus on the social relevance of emotion? | 0 |
Why hasn't Daniel Ek brought Spotify to India? | 0 |
24. A weak acid $\mathrm{H} X$ has the dissociation constant $1 \times 10^{-5} \mathrm{M}$. It forms a salt $\mathrm{Na} X$ on reaction with alkali. The percentage hydrolysis of $0.1 \mathrm{M}$ solution of $\mathrm{Na} X$ is
(a) $0.0001 \%$
(b) $0.01 \%$
(c) $0.1 \%$
(d) $0.15 \%$ | 1 |
96. $\mathrm{Cr}_{2} \mathrm{O}_{7}^{2-}+\mathrm{SO}_{2}+\mathrm{H}^{+}=\mathrm{Cr}^{3+}+\mathrm{HSO}_{4}^{-}+\mathrm{H}_{2} \mathrm{O}$ | 1 |
What is a "succubus summoning" ritual? | 0 |
How do I join army after hotel management? | 0 |
5. The volume strength of $1 \mathrm{M} \mathrm{H}_{2} \mathrm{O}_{2}$ is :
(Molar mass of $\mathrm{H}_{2} \mathrm{O}_{2}=34 \mathrm{~g} \mathrm{~mol}^{-1}$ )
(a) 5.6
(b) 16.8
(c) 11.35
(d) 22.4 | 1 |
13. $K_c$ for $\mathrm{A}+\mathrm{B} \rightleftharpoons 3 \mathrm{C}$ is 20 at $25^{\circ} \mathrm{C}$. If a 2 -litre vessel contains 1,2 and 4 moles of A , $B$ and $C$ respectively, the reaction at $25^{\circ} \mathrm{C}$ shall
(a) proceed from left to right
(b) proceed from right to left
(c) be at equilibrium
(d) not... | 1 |
Do you think that when a married man cheats, people always blame the woman he cheated with but not the man himself. If so, why? | 0 |
Donald Trump or Hillary Clinton? Why? | 0 |
3. Find the value of $x$ for which the matrix $A=\left[\begin{array}{ccc}2 & 0 & 7 \\ 0 & 1 & 0 \\ 1 & -2 & 1\end{array}\right]$ is inverse of $B=\left[\begin{array}{ccc}-x & 14 x & 7 x \\ 0 & 1 & 0 \\ x & -4 x & -2 x\end{array}\right]$. | 1 |
7. The forces, which meet at one point but their lines of action do not lie in one plane, are called
(a) non-coplanar non-concurrent forces
(b) non-coplanar concurrent forces
(c) coplanar concurrent forces
(d) coplanar non-concurrent forces | 1 |
6. Find (i) the total number of neutrons (ii) the total mass of neutrons in 7 mg of ${ }^{14} \mathrm{C}$. (Assume the mass of a neutron = mass of a hydrogen atom)
[(i) $24.08 \times 10^{20}$
(ii) 4 mg$]$ | 1 |
What is spirituality? | 0 |
What's the difference between "everybody" and "everyone"? | 0 |
How do I get my likes and followers up on Instagram? | 0 |
10. Three blocks $A, B$ and $C$ are lying on a smooth horizontal surface as shown in the figure. $A$ and $B$ have equal masses $m$ while $C$ has mass $M$. Block $A$ is given an initial speed $v$ towards $B$ due to which it collides with $B$ perfectly inelastically. The combined mass collides with $C$, also perfectly in... | 1 |
What was the best game of 2016? | 0 |
Why wont anyone answer my questions? | 0 |
Example 3.88 Find the sum to $n$ terms of the series
$1 /(1 \times 2)+1 /(2 \times 3)+1 /(3 \times 4)+\cdots+1 / n(n+1)$. | 1 |
Why do I shake when I'm angry/mad? | 0 |
How can we get best Online Tutorials or educational videos or youtube videos or OpenCourseWare or mooc for preparation of GRE? | 0 |
Which is the best Bollywood movie of 2016? | 0 |
Example 3.90 Find the sum $\sum_{r=1}^{n} \frac{1}{(a r+b)(a r+a+b)}$. | 1 |
1. The moment of inertia of a uniform cylinder of length $\hat{U}$ and radius $R$ about its perpendicular bisector is I . What is the ratio $\hat{\mathrm{U}} / R$ such that the moment of inertia is minimum?
(a) 1
(b) $\frac{3}{\sqrt{2}}$
(c) $\sqrt{\frac{3}{2}}$
(d) $\frac{\sqrt{3}}{2}$ | 1 |
3. A car moves at a constant speed on a road as shown in figure (7-Q2). The normal force by the road on the car is $N_{A}$ and $N_{B}$ when it is at the points $A$ and $B$ respectively.
(a) $N_{A}=N_{B}$ (b) $N_{A}>N_{B}$ (c) $N_{A}<N_{B}$ (d) insufficient information to decide the relation of $N_{A}$ and $N_{B}$.
(B)
 d y=0$. | 1 |
What are some of the weirdest questions asked in Quora? | 0 |
The forebrain is everted in what type of fishes? | 0 |
How do scientiest measure brain activity? | 0 |
Why does time seem to speed up as we age? | 0 |
17. The function $y=f(x)$ is the solution of the differential equation $\frac{d y}{d x}+\frac{x y}{x^{2}-1}=\frac{x^{4}+2 x}{\sqrt{1-x^{2}}}$ in $(-1,1)$ satisfying $f(0)=0$. Then, $\int_{-\frac{\sqrt{3}}{2}}^{\sqrt{3} / 2} f(x) d x$ is
(a) $\frac{\pi}{3}-\frac{\sqrt{3}}{2}$
(b) $\frac{\pi}{3}-\frac{\sqrt{3}}{4}$
(c)... | 1 |
Ex. 41. 1000 g of 1 m aqueous solution of sucrose is cooled and maintained at $-3.534^{\circ} \mathrm{C}$. Find how much ice will separate out.
$K_{f}\left(\mathrm{H}_{2} \mathrm{O}\right)=1.86 \mathrm{~K} \cdot \mathrm{~kg} \cdot \mathrm{~mol}^{-1}$. | 1 |
What tribe of Turks emerged in 13th century Anatolia? | 0 |
How can I invite all my followers to my blog? | 0 |
What's the biggest lie ever told on the news? | 0 |
1. A body is displaced from $x=4 \mathrm{~m}$ to $x=2 \mathrm{~m}$ along the $x$-axis. For the forces mentioned in Column I, match the corresponding work done is Column II.
\begin{tabular}{l|l}
\hline \multicolumn{1}{c|}{ Column I } & \multicolumn{1}{c}{ Column II } \\
\hline (a) $\mathbf{F}=4 \hat{\mathbf{i}}$ & (p) ... | 1 |
22. Which of the following compounds are covalent?
(a) $\mathrm{H}_{2}$
(b) $\mathrm{CaO}$
(c) $\mathrm{KCl}$
(d) $\mathrm{Na}_{2} \mathrm{~S}$ | 1 |
2. Consider the lines $L_{1}: \frac{x-1}{2}=\frac{y}{-1}=\frac{z+3}{1}, L_{2}: \frac{x-4}{1}=\frac{y+3}{1}=\frac{z+3}{2}$ and the planes' $P_{1}: 7 x+y+2 z$
$:=3, P_{2}: 3 x+5 y-6 z=4$. Let $a x+b y+c z=d$ be the equation of the plane passing through the point of intersection of lipes $L_{1}$ and $L_{2}$, and perpendi... | 1 |
2. If $\sin ^{3} \theta+\sin \theta \cos \theta+\cos ^{3} \theta=1$, then $\theta$ is equal to $(n \in Z)$
a. $2 n \pi$
b. $2 n \pi+\frac{\pi}{2}$
c. $2 n \pi-\frac{\pi}{2}$
d $n \pi$ | 1 |
How do I figure out what shutter speed and aperture to use in the day and in the night? | 0 |
How do I delete an account on instagram if I can't remember the password or email? | 0 |
21. Two, capacitors $A$ and $B$ are connected in series across a $100 \mathrm{~V}$ supply and it is observed that the potential difference across them are $60 \mathrm{~V}$ and $40 \mathrm{~V}$. A capacitor of $2 \mu \mathrm{F}$ capacitance is now connected in parallel with $A$ and the potential difference across $B$ ri... | 1 |
25. The difference between heats of reaction at constant pressure and constant volume for the reaction :
$2 \mathrm{C}_{6} \mathrm{H}_{6}(\mathrm{l})+15 \mathrm{O}_{2}(\mathrm{~g}) \rightarrow 12 \mathrm{CO}_{2}(\mathrm{~g})+6 \mathrm{H}_{2} \mathrm{O}(\mathrm{l})$ at $25^{\circ} \mathrm{C}$ in $\mathrm{kJ}$ is
(a) ... | 1 |
Do you think Brazil could win 2014 World cup football? | 0 |
8. Let $f(x)$ be a quadratic expression which is positive for all real values of $x$. If $g(x)=f(x)+f^{\prime}(x)+f^{\prime \prime}(x)$, then for any real $x$
(1990, 2M)
(a) $g(x)<0$
(b) $g(x)>0$
(c) $g(x)=0$
(d) $g(x) \geq 0$ | 1 |
New Delhi first hosted the Asian Games in what year? | 0 |
What is the psi of fluid in the amniotic sac? | 0 |
18. A thick glass slab $(\mu=1.5)$ is to be viewed in reflected white light. It is proposed to coat the slab with a thin layer of a material having refractive index 1.3 so that the wavelength $6000 \AA$ is suppressed. Find the minimum thickness of the coating required. | 1 |
(c) motion of a ball bearing inside a smooth curved bowl, when released from a point slightly above the lower most point. | 1 |
7. If the angles of a triangle are in the ratio $4: 1: 1$, then the ratio of the longest side to the perimeter is
(a) $\sqrt{3}:(2+\sqrt{3})$
(b) $1: 3: 2$
(c) $1: 2+\sqrt{3}$
(d) $2: 3$ | 1 |
31. Ammonia can be dried by
(a) conc. $\mathrm{H}_{2} \mathrm{SO}_{4}$
(b) $\mathrm{P}_{4} \mathrm{O}_{10}$
(c) $\mathrm{CaO}$
(d) anhydrous $\mathrm{CaCl}_{2}$ | 1 |
When were the first results of the energy explorations expected? | 0 |
What are three things the new movements try to achieve? | 0 |
How do I get started with philosophy? Which books are the best to begin with? | 0 |
57. If $A(\alpha, \beta)=\left[\begin{array}{ccc}\cos \alpha & \sin \alpha & 0 \\ -\sin \alpha & \cos \alpha & 0 \\ 0 & 0 & e^{\beta}\end{array}\right]$, then $A(\alpha, \beta)^{-1}$ in terms of function of $A$ is
a. $A(\alpha,-\beta)$
b. $A(-\alpha,-\beta)$
c. $A(-\alpha, \beta)$
d. none of these | 1 |
How does ageism affect older people? | 0 |
7. Which of the following carbon will be deprotonated first on treatment with base.
(A) 4
(B) 5
(C) 2
(D) 3 | 1 |
What are the signs of a cheating spouse? | 0 |
74. $a, b, c$ are distinct real numbers, not equal to one. If $a x+y+z$ $=0, x+b y+z=0$ and $x+y+c z=0$ have a non-trivial solution, then the value of $\frac{1}{1-a}+\frac{1}{1-b}+\frac{1}{1-c}$ is equal to
a. -1
b. 1
c. zero
d. none of these | 1 |
When did Singapore leave the Federation of Malaya? | 0 |
31. Assertion : Rayon is a semisynthetic polymer whose properties are better than natural cotton.
Reason : Mechanical and aesthetic properties of cellulose can be improved by acetylation.
[Main Online April 9, 2016]
(a) Both assertion and reason are correct, but the reason is not the correct explantion for the asser... | 1 |
How do I avoid someone without them noticing? | 0 |
9. A screw gauge with a pitch of 0.5 mm and a circular scale with 50 divisions is used to measure the thickness of a thin sheet of Aluminium. Before starting the measurement, it is found that wen the two jaws of the screw gauge are brought in contact, the $45^{\text {th }}$ division coincides with the main scale line a... | 1 |
5. If a circle passes through the point $(a, b)$ and cuts the circle $x^{2}+y^{2}=k^{2}$ orthogonally, then the equation of the locus of its centre is
(IIT-JEE, 1988)
a. $2 a x+2 b y-\left(a^{2}+b^{2}+k^{2}\right)=0$
b. $2 a x+2 b y-\left(a^{2}-b^{2}+k^{2}\right)=0$
c, $x^{2}+y^{2}-3 a x-4 b y+\left(a^{2}+b^{2}-k^{2}... | 1 |
14. The atomic radius of palladium is $1.375 \AA$. The unit cell of palladium is a face-centred cube. Calculate the density of palladium.
(12.01 g/cc) | 1 |
Where can I get quality pressure cleaning services in Sydney? | 0 |
How can I improve my fluency in English to face a more confortable job interview? | 0 |
2. A room is illuminated by an extended source. The illuminance at a particular portion of a wall can be increased by
(a) moving the source
(b) rotating the source
(c) bringing some mirrors in proper positions
(d) changing the colour of the source. | 1 |
The Raj Ghat was designed by what architect? | 0 |
I intend to buy protein supplements from Healthkart. Which protein should I buy: whey, soy or casein? | 0 |
What does Drivers of Change skip? | 0 |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.