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How were you, as a current or former substitute teacher, treated by the other teachers and staff of the school? | 0 |
7. The polymer obtained from the following reactions is
[Jan. 11, 2019 (I)]
(a)
(c) $\left[\begin{array}{r}\mathrm{O} \\ \mathrm{O}-\left(\mathrm{CH}_{2}\right)_{4}-\stackrel{\oplus}{\ma... | 1 |
6. When we rub our hands they become warm. Have we supplied heat to the hands? | 1 |
Example 10.2
Starting from rest, a fan takes five seconds to attain the maximum speed of 400 rpm(revolutions per minute). Assuming constant acceleration, find the time taken by the fan in attaining half the maximum speed. | 1 |
2. The reaction of $\mathrm{NO}$ with $\mathrm{N}_{2} \mathrm{O}_{4}$ at $250 \mathrm{~K}$ gives :
(a) $\mathrm{N}_{2} \mathrm{O}$
(b) $\mathrm{NO}_{2}$
(c) $\mathrm{N}_{2} \mathrm{O}_{3}$
(d) $\mathrm{N}_{2} \mathrm{O}_{5}$ | 1 |
5. The region between two concentric spheres of radii $a$ and $b$, respectively (see the figure), has volume charge density $\rho=\frac{A}{r}$, where, $A$ is a constant and $r$ is the distance from the centre. At the centre of the spheres is a point charge $Q$. The value of $A$, such that the electric field in the regi... | 1 |
38. Which of the following oxides of nitrogen is a coloured gas?
(a) $\mathrm{N}_{2} \mathrm{O}$
(b) $\mathrm{NO}$
(c) $\mathrm{N}_{2} \mathrm{O}_{5}$
(d) $\mathrm{NO}_{2}$ | 1 |
86. An organic compound $A, \mathrm{C}_{8} \mathrm{H}_{6}$, on treatment with dilute sulphuric acid containing mercuric sulphate gives a compound $B$, which can also be obtained from a reaction of benzene with an acid chloride in the presence of anhydrous aluminium chloride. The compound $B$, when treated with iodine i... | 1 |
What facet of Indian mathematics was introduced into the Arab areas in the early Medieval period? | 0 |
How can the ban of 500 and 1000 rupee notes increase the Indian economy? | 0 |
- Example 14
Let $X=A \cdot \overline{B C}$. Evaluate $X$ for
(a) $A=1, B=0, C=1$,
(b) $A=B=C=1$ and
(c) $A=B=C=0$. | 1 |
Illustration 3.80 Show that the plane $2 x-2 y+z+12=0$ touches the sphere $x^{2}+y^{2}+z^{2}-2 x-4 y+2 z-3$ $=0$. | 1 |
Will people be able to buy things online without net neutrality? | 0 |
How do I connect to WiFi using C++? | 0 |
How do I use words in an English sentence? | 0 |
Which are some good novels? | 0 |
How do I find big brand whole sellers who do drop shipping? | 0 |
2. An electron in a hydrogen atom makes a transition from first excited state to ground state. The magnetic moment due to circulating electron
(a) increases two times
(b) decreases two times
(c) increases four times
(d) remains same | 1 |
Problem 2.1 Calculate the number of protons, neutrons and electrons in ${ }_{35}^{80} \mathrm{Br}$. | 1 |
What are the best books for UPSC? | 0 |
33. Baeyer's reagent is :
(a) alkaline permanganate solution
(b) acidified permanganate solution
(c) neutral permanganate solution
(d) aqueous bromine solution | 1 |
What is often included in an eclectic reading? | 0 |
Where does the word animal come from? | 0 |
3. Because of the space charge in a diode valve,
(a) the plate current decreases
(b) the plate voltage increases
(c) the rate of emission of thermions increases
(d) the saturation current increases. | 1 |
Are most INTJs Phlegmatic? | 0 |
Which decade in history was officially called the "Decade of the Brain"? | 0 |
What is spiritism? | 0 |
12. Light from a point source falls on a small area placed perpendicular to the incident light. If the area is rotated about the incident light by an angle of $60^{\circ}$, by what fraction will the illuminance change? | 1 |
12. A hollow metal sphere of radius $5 \mathrm{~cm}$ is charged such that the potential on its surface is $10 \mathrm{~V}$. The potential at the centre of the sphere is
(a) zero
(b) $10 \mathrm{~V}$
(c) same as at a point $5 \mathrm{~cm}$ away from the surface
(d) same as at a point $25 \mathrm{~cm}$ away from th... | 1 |
How can I read someone else's WhatsApp messages without using his/her phone? | 0 |
8. $5 \mathrm{~g}$ of $\mathrm{Na}_{2} \mathrm{SO}_{4}$ was dissolved in $x \mathrm{~g}$ of $\mathrm{H}_{2} \mathrm{O}$. The change in freezing point was found to be $3.82^{\circ} \mathrm{C}$. If $\mathrm{Na}_{2} \mathrm{SO}_{4}$ is $81.5 \%$ ionised, the value of $x$
( $K_{f}$ for water $=1.86^{\circ} \mathrm{C} \m... | 1 |
What are the two extremes of the continuum of sexual orientation? | 0 |
5. The major product of the following reaction is
 is
a. $2 x^{2}+2 y^{2}-4 x+1=0$
b. $x^{2}+y^{2}-4 x+2=0$
c. $x^{2}+y^{2}-4 x+1=0$... | 1 |
With films like Humshakals and Himmatwala, do you think the film fraternity is actually encouraging people to download movies instead of wasting money in watching them in theatres? | 0 |
13. If $m, n$ are even integers and $p, q \in R$, then $\int_{p+m \alpha}^{q+n \alpha} g(t) d t$ is equal to
a. $\int_{p}^{q} g(x) d x$
b. $(n-m) \int_{0}^{\alpha} g(x) d x$
c. $\int_{p}^{q} g(x) d x+(n-m) \int_{0}^{\alpha} g(2 x) d x$
d $\int_{p}^{q} g(x) d x+(n-m) \int_{0}^{\alpha} g(x) d x$ | 1 |
## Solved example
- In 1932, A. A. Levine and A. G. Cole studied the ozonolysis of o-xylene and isolated three products: glyoxal, 2,3-butanedione, and pyruvaldehyde:
In what ratio would ... | 1 |
17. If $|\vec{a}|=5,|\vec{a}-\bar{b}|=8$ and $|\bar{a}+\bar{b}|=10$, then find $|\vec{b}|$. | 1 |
Illustration 1:21
i. Show that the lines joining the vertices of a tetrahedron to the centroids of opposite faces are concurrent.
ii. Show that the joins of the midpoints of the opposite edges of a tetrahedron intersect and bisect eăंch other. | 1 |
Example 1.51 Using logarithms, find the value of $6.45 \times 981.4$ | 1 |
26. In an experiment to determine the specific heat of aluminium, piece of aluminium weighing $500 \mathrm{~g}$ is heated to $100^{\circ} \mathrm{C}$. It is then quickly transferred into a copper calorimeter of mass $500 \mathrm{~g}$ containing $300 \mathrm{~g}$ of water at $30^{\circ} \mathrm{C}$. The final temperatur... | 1 |
Why are scholars concerned with analysis of the Gospels over the letters? | 0 |
7. Evaluate $\lim _{x \rightarrow 0} \frac{8}{x^8}\left\{1-\cos \frac{x^2}{2}-\cos \frac{x^2}{4}+\cos \frac{x^2}{2} \cos \frac{\dot{x}^2}{4}\right\}$. | 1 |
7. The mole fraction of a solvent in aqueous solution of a solute is 0.8 . The molality (in $\mathrm{mol} \mathrm{kg}^{-1}$ ) of the aqueous solution is :
(a) $13.88 \times 10^{-2}$
(b) $13.88 \times 10^{-1}$
(c) 13.88
(d) $13.88 \times 10^{-3}$ | 1 |
How can I get better at smiling at people? | 0 |
4. The value of $i^{1+3+5+\cdots+(2 n+1)}$ is -. | 1 |
Which is the most unlikely conspiracy theory which turned out to be true? | 0 |
(iii) method of contrapositive | 1 |
1. Two wires $A$ and $B$ of same dimensions are stretched by same amount of force. Young's modulus of $A$ is twice that of $B$. Which wire will get more elongation? | 1 |
What are the names of some really nice beaches in El Paso? | 0 |
I want to send data from HC-05 to Intel Edison BLE. I am not able to understand after pairing and connection how to read the incoming data on BLE? | 0 |
5. The focal length of a converging lens are $f_{v}$ and $f_{r}$ for violet and red light respectively.
(a) $f_{v}>f_{r}$.
(b) $f_{v}=f_{r}$.
(c) $f_{v}<f_{r}$.
(d) Any of the three is possible depending on the value of the average refractive index $\mu$. | 1 |
What did Diamond find about the women? | 0 |
Computers were invented in what decade in history? | 0 |
What would people call a guy who got detained twice in the first year of engineering? | 0 |
How can I download a playlist from any video streaming website? | 0 |
7. Number of $\alpha$-hydrogen in given compound are :
(A) 5
(B) 6
(C) 7
(D) 8 | 1 |
51. If $x, y, z$ are real and $4 x^{2}+9 y^{2}+16 z^{2}-6 x y-12 y z-8 z x=0$, then $x, y, z$ are in
a. A.P.
b. G.P.
c. H.P.
d. none of these | 1 |
16. A metal nitrate reacts with KI to give a black precipitate which on addition of excess of $\mathrm{KI}$ is converted into orange colour solution. The cation of the metal nitrate is
(a) $\mathrm{Hg}^{2+}$
(b) $\mathrm{Bi}^{3+}$
(c) $\mathrm{Pb}^{2+}$
(d) $\mathrm{Cu}^{+}$ | 1 |
2. The sides of a parallelogram are $2 \hat{i}+4 \hat{j}-5 \hat{k}$ and $\hat{i}+2 \hat{j}+3 \hat{k}$. The unit vector parallel to one of the diagonals is
a. $\frac{1}{7}(3 \hat{i}+6 \hat{j}-2 \hat{k})$
b. $\frac{1}{7}(3 \hat{i}-6 \hat{j}-2 \hat{k})$
c. $\frac{1}{\sqrt{69}}(\hat{i}+2 \hat{j}+8 \hat{k})$
d. $\frac{1}{\s... | 1 |
Instead of public surveys, the organizations use what to study corruption? | 0 |
19. How many electrons would be required to deposit $6.35 \mathrm{~g}$ of copper at the cathode during the electrolysis of an aqueous solution of copper sulphate? (Atomic mass of copper $=63.5 \mathrm{u}, \mathrm{N}_{\mathrm{A}}=$ Avogadro's constant):
[Main Online April 12, 2014]
Download More: WWW.JEEBOOKS.IN (a) $... | 1 |
1. The heat capacity of a body depends on
(a) the heat given (b) the temperature raised
(c) the mass of the body (d) the material of the body | 1 |
What changed worldwide property drasrically? | 0 |
29. The standard reduction potentials at $298 \mathrm{~K}$ for the following half reactions are given against each
$$
\mathrm{Zn}^{2+}(\mathrm{aq})+2 \mathrm{e} \rightleftharpoons \mathrm{Zn}(\mathrm{s}) \quad-0.762
$$
$$
\begin{aligned}
& \mathrm{Cr}^{3+}(\mathrm{aq})+2 \mathrm{e} \rightleftharpoons \mathrm{Cr}(\mat... | 1 |
8. If $2 \sec 2 \theta=\tan \phi+\cot \phi$, then one of the values of $\theta+\phi$ is
a. $\pi / 2$
b. $\pi / 4$
c. $\pi / 3$
d none of these | 1 |
12. Which of the following is/are true about the root/s of
$x: \log _{\sin ^{2} x}(2)+\log _{\cos ^{2} x}(2)+2\left(\log _{\sin ^{2} x}(2)\right) \cdot\left(\log _{\cos ^{2} x}(2)\right)=0$
(a) Equation has only one solution in $(0,2 \pi)$
(b) Sum of the roots is zero
(c) Odd multiple of $\pi / 4$
(d) At least on... | 1 |
25. Find the equivalent resistance of the network shown in figure (32-W21) between the points $a$ and $b$.
Figure 32-W21 | 1 |
- Example 18.8 A massless rod BD is suspended by two identical massless strings $A B$ and $C D$ of equal lengths. A block of mass $m$ is suspended from point $P$ such that BP is equal to $x$. If the fundamental frequency of the left wire is twice the fundamental frequency of right wire, then the value of $x$ is
(JEE 2... | 1 |
How can I improve my English grammar? | 0 |
56. For the gas phase reaction :
$$
\mathrm{C}_{2} \mathrm{H}_{4}+\mathrm{H}_{2} \rightleftharpoons \mathrm{C}_{2} \mathrm{H}_{6}(\Delta H=-32.7 \mathrm{kcal})
$$
carried out in a vessel, the equilibrium concentration of $\mathrm{C}_{2} \mathrm{H}_{4}$ can be increased by :
(a) increasing the temperature
(b) decr... | 1 |
What are some of the best evidence that we really did land on the moon? | 0 |
1. A uniform cable of mass $M$ and length $L$ is placed on a horizontal surface such that its $\frac{1}{n}$ th part is hanging below the edge of the surface. To lift the hanging part of the cable upto the surface, the work done should be
(a) $\frac{2 M g L}{n^{2}}$
(b) $n M g L$
(c) $\frac{M g L}{n^{2}}$
(d) $\frac{M... | 1 |
The phrase modern originated form what? | 0 |
How do I create and design websites? | 0 |
What makes you creative? | 0 |
Review of LNM Institute of Information Technology? | 0 |
19. Which of the following statement(s) is/are true?
a. If function $y=f(x)$ is continuous at $x=c$ such that $f(c) \neq 0$, then $f(x) f(c)>0 \quad \forall x \in(c-h, c+h)$ where $h$ is sufficiently small positive quantity.
b. $\lim _{n \rightarrow \infty} \frac{1}{n} \ln \left(\left(1+\frac{1}{n}\right)\left(1+\frac... | 1 |
Ex. 6. In a gravimetric determination of P , an aqueous solution of dihydrogen phosphate ion $\mathrm{H}_{2} \mathrm{PO}_{4}^{-}$is treated with a mixture of ammonium and magnesium ions to precipitate magnesium ammonium phosphate, $\mathrm{Mg}\left(\mathrm{NH}_{4}\right) \mathrm{PO}_{4} \cdot 6 \mathrm{H}_{2} \mathrm{O... | 1 |
The construction of Connaught Place was completed in what year? | 0 |
12. An isomer of ethanol is :
(a) methanol
(b) diethyl ether
(c) acetone
(d) dimethyl ether | 1 |
3. From a uniform square plate of side $a$ and mass $m$, a square portion $D E F G$ of side $\frac{a}{2}$ is removed. Then, the moment of inertia of remaining portion about the axis $A B$ is
(a) $\frac{7 m a^{2}}{16}$
(b) $\frac{3 m a^{2}}{16}$
(c) $\frac{3 m a^{2}}{4}$
(d) $\frac{9 m a^{2}}{16}$
(A) 1
(B) 2
(C) 3
(D) 4 | 1 |
42. A sample of rock from moon contains equal number of atoms of uranium and lead $\left(\frac{t_1}{2}\right.$ for $\mathrm{U}=4.5 \times 10^9$ years $)$. The age of the rock would be
(a) $4.5 \times 10^9$ years
(b) $9 \times 10^9$ years
(c) $13.5 \times 10^9$ years
(d) $2.25 \times 10^9$ years | 1 |
Who founded the Shuga empire after the fall of the Maurya empire? | 0 |
4. $\quad$ Given $A(0,0)$ and $B(x, y)$ with $x \in(0,1)$ and $y>0$. Let the slope of the line $A B$ equal to $m_{1}$. Point $C$ lies on the line $x=1$ such that the slope of $B C$ equal to $m_{2}$ where $0<m_{2}<m_{1}$. If the area of the triangle $A B C$ can be expressed as $\left(m_{1}-m_{2}\right) f(x)$, then the l... | 1 |
What is macromolecule and what are some examples? | 0 |
renaissance humanism was antagonistic to what? | 0 |
4. In the interval $[0,1]$, the function $x^{25}(1-x)^{75}$ takes its maximum value at the point
(IUT-JEE, 1995)
a. 0
c. $\frac{1}{2}$
d. $\frac{1}{3}$
h. $\frac{1}{4}$ | 1 |
35. The value of $P_{n}+(1 / 2) P_{n-1}$ is equal to
a. $1 / 2$
b. $2 / 3$
c. 1
d. none of these | 1 |
A second set of corruption metrics has been compiled by Global Integrity and what other organization? | 0 |
Example 7.27
 | 1 |
Were there any hippies before the 1960s? | 0 |
(a) $t=0$, | 1 |
The word animal is usually only used to refer to what? | 0 |
What are the most import things to do when I relocate my retail business that has been at the same place for 13 years? | 0 |
If I am talking on whatsapp call to someone and another person calls me on my whatsapp. what status will he get. will it show busy? | 0 |
17. A resistor $R$ has power of dissipation $P$ with cell voltage $E$. The resistor is cut in $n$ equal parts and all parts are connected in parallel with same cell. The new power dissipation is
(a) $n P$
(b) $n P^{2}$
(c) $n^{2} P$
(d) $n / P$ | 1 |
13. The oxidation number of sulphur in $\mathrm{S}_{8}, \mathrm{~S}_{2} \mathrm{~F}_{2}, \mathrm{H}_{2} \mathrm{~S}$ respectively, are
(a) $0,+1$ and -2
(b) $+2,+1$ and -2
(c) $0,+1$ and +2
(d) $-2,+1$ and -2 | 1 |
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