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16. Calamine, malachite, magnetite and cryolite, respectively, are
(a) $\mathrm{ZnCO}_{3}, \mathrm{CuCO}_{3} \cdot \mathrm{Cu}(\mathrm{OH})_{2}, \mathrm{Fe}_{3} \mathrm{O}_{4}, \mathrm{Na}_{3} \mathrm{AlF}_{6}$
(b) $\mathrm{ZnSO}_{4}, \mathrm{Cu}(\mathrm{OH})_{2}, \mathrm{Fe}_{3} \mathrm{O}_{4}, \mathrm{Na}_{3} \ma... | 1 |
9. $x+y=\tan ^{-1} y$
$: \quad y^{2} y^{\prime}+y^{2}+1=0$ | 1 |
How can I be like John von Neumann? How can I unlock my full mental potential? | 0 |
When did the commercial colonization of India begin? | 0 |
1. Match the following two columns for a convex lens corresponding to object position shown in Column I.
| | Column I | Column II |
| :--- | :--- | :--- |
| (a) | Between $O$ and $F_{1}$ | (p) Real |
| (b) | Between $F_{1}$ and $2 F_{1}$ | (q) Virtual |
| (c) Between $O$ and $F_{2}$ | (r) Erect | |
| (d) | Between $... | 1 |
2. The noble gas that does NOT occur in the atmosphere is :
(a) $\mathrm{He}$
(b) $\mathrm{Kr}$
(c) $\mathrm{Ne}$
(d) $\mathrm{Ra}$ | 1 |
What are the recent hindi movies? | 0 |
21. A ball hits the floor and rebounds after an inelastic collision. In this case,
(a) the momentum of the ball just after the collision is the same as that just before the collision
(b) the mechanical energy of the ball remains the same in the collision
(c) the total momentum of the ball and the earth is conserve... | 1 |
Ex2.34 Prove that the equationof any tangent to the circle $x^{2}+y^{2}-2 x+4 y-4=0$ is of the form $y=m(x-1)+3 \sqrt{1+m^{2}}-2$. | 1 |
12. The principle of column chromatography is :
(a) Gravitational force.
(b) Capillary action
(c) Differential absorption of the substances on the solid phase
(d) Differential adsorption of the substances on the solid phase. | 1 |
4. The wavelength of the first spectral line in the Balmer series of hydrogen atom is $6561 \AA$. The wavelength of the second spectral line in the Balmer series of singly ionized helium atom is
(a) $1215 \AA$
(b) $1640 \AA$
(c) $2430 \AA$
(d) $4687 \AA$ | 1 |
9. Two beams, $A$ and $B$, of plane polarised light with mutually perpendicular planes of polarisation are seen through a polaroid. From the position when the beam $A$ has maximum intensity (and beam $B$ has zero intensity), a rotation of polaroid through $30^{\circ}$ makes the two beams appear equally bright. If the i... | 1 |
47 Point charges of $+6.0 \mu \mathrm{C}$ and $-4.0 \mu \mathrm{C}$ are placed on an $x$ axis, at $x=8.0 \mathrm{~m}$ and $x=16 \mathrm{~m}$, respectively. What charge must be placed at $x=24 \mathrm{~m}$ so that any charge placed at the origin would experience no electrostatic force? | 1 |
16. An aqueous solution contains $5 \%$ and $10 \%$ of urea and glucose respectively (by wt.). If $K_{f}$ for water is 1.86 , the f.p. of the solution is
(a) 3.03 K
(b) $3.03^{\circ} \mathrm{C}$
(c) $-3.03^{\circ} \mathrm{C}$
(d) -3.03 K | 1 |
What did India supply to the Persian war efforts against Greece? | 0 |
8. In general, the property (magnitudes only) that shows an opposite trend in comparison to other properties across a period is :
(a) Ionization enthalpy
(b) Electronegativity
(c) Electron gain enthalpy
(d) Atomic radius | 1 |
Example 12 Why ground wave propagation is not suitable for high frequency? | 1 |
The Delhi Metro project was spearheaded by what Indian government figure? | 0 |
29. Correct set of four quantum numbers for the valence (outermost) electron of rubidium $(Z=37)$ is :
(a) $5,0,0,+1 / 2$
(b) $5,1,0,+1 / 2$
(c) $5,1,1,+1 / 2$
(d) $6,0,0,+1 / 2$ | 1 |
What type of conquests were gradual in nature? | 0 |
56. Let $P_{i}$ and $P_{i}^{\prime}$ be the feet of the perpendiculars drawn from foci $S, S^{\prime \prime}$ on a tangent $T_{i}$ to an ellipse whose length of semi-major axis is 20 , if $\sum_{i=1}^{10}\left(S P_{i}\right)\left(S^{\prime \prime} P_{i}^{\prime}\right)=2560$, then the value of eccentricity is
a. $\frac... | 1 |
4. Draw mechanisms for these reactions using just enolization and its reverse.
Purpose of the problem
Exercise in using enolization of carry out simple reactions. | 1 |
23. Standard molar enthalpy of formation of $\mathrm{CO}_{2}$ is equal to
(a) zero
(b) the standard molar enthalpy of combustion of gaseous carbon
(c) the sum of standard molar enthalpies of formation of CO and $\mathrm{O}_{2}$
(d) the standard molar enthalpy of combustion of carbon (graphite) | 1 |
Bagaru and Sanganer represent what type of art? | 0 |
Which military occupied Hyderabad city in a protection role? | 0 |
(ii) If $\mathrm{A} \subset \mathrm{B}$ and $\mathrm{B} \in \mathrm{C}$, then $\mathrm{A} \in \mathrm{C}$ | 1 |
How is Metromile doing as of the fourth quarter of 2014? | 0 |
Is it compulsory to study Hindi as the third language in Kerala? | 0 |
Who was the first distinctive Whig party that emerged from the chaos? | 0 |
What's a smart TV? | 0 |
How do I delete messages on snapchat that the other person has saved? | 0 |
5. Complete set of $S$ is
a. $(-2,2)$
b. $(-\infty,-2) \cup(2, \infty)$
c. $(-1,1)$
d. $(-\infty,-1) \cup(1, \infty)$ | 1 |
What are the less effective ways to fight corruption institutionally? | 0 |
4. If two balls collide in air while moving vertically, then momentum of the system is conserved because
(a) gravity does not affect the momentum of the system
(b) force of gravity is very less compared to the impulsive force
(c) impulsive force is very less than the gravity
(d) gravity is not acting during collisi... | 1 |
22. The rate of diffusion of methane at a given temperature is twice that of a gas $X$. The molecular weight of $X$ is
[1990 - 1 Mark]
(a) 64.0
(b) 32.0
(c) 4.0
(d) 8.0 | 1 |
How many Marines deploy on a Nimitz-class aircraft carrier? | 0 |
14. Which of the following is an ‘E’ isomer?
 | 1 |
24. If $(a+b+c) c<0<a(a+b+c)$, then
a. one root is less than 0 , the other is greater than 1
b. one root lies in $(-\infty, 0)$ and other in $(0,1)$
c. both the roots lie in $(0,1)$
d. one root lies in $(0,1)$ and other in $(1, \infty)$ | 1 |
Which countries provide financial help to India? | 0 |
What are good startups in Chennai that are hiring? | 0 |
9.22 At what angle should a ray of light be incadent on the fiee of a prisum of refracting ansple $60^{\circ}$ so that an just wufferm total interail reflection at the other face? The refractive andex of the material of the prisem to 1.524 . | 1 |
25. Two adjacent sides of a parallelogram $A B C D$ are given by $\overrightarrow{A B}=2 \hat{i}+10 \hat{j}+11 \hat{k}$ and $\overrightarrow{A D}=-\hat{i}+2 \hat{j}+2 \hat{k}$. The side $A D$ is rotated by an acute angle $\alpha$ in the plane of the parallelogram so that $A D$ becomes $A D^{\prime}$. If $A D^{\prime}$ ... | 1 |
What is the best question that I can ask on Quora? | 0 |
How do you say prayer in Spanish? | 0 |
Can I add a Coursera course which I took without a signature certificate on my resume? | 0 |
2.149. A weightless piston divides a thermally insulated cylinder into two equal parts. One part contains one mole of an ideal gas with adiabatic exponent $\gamma$, the other is evacuated. The initial gas temperature is $T_{0}$. The piston is released and the gas fills the whole
 2
(b) 3
(c) 4
(d) 5 | 1 |
20. $\int \frac{f(x)}{\sqrt{g(x)}} d x$ is equal to
a. $\frac{1}{2 \sqrt{e^{x}-1}}-\operatorname{cosec}^{-1}\left(e^{x}\right)+c$
b. $\frac{2}{\sqrt{e^{x}-e^{-x}}}-\sec ^{-1}\left(e^{x}\right)+c$
c. $\frac{1}{2 \sqrt{e^{2 x}-1}}+\sec ^{-1}\left(e^{x}\right)+c$
d. none of these | 1 |
Why is there a major disparity between the intensity of conservativeness in Australia and the US? | 0 |
What influenced the increasing development of armor? | 0 |
10. The number of all possible matrices of order $3 \times 3$ with each entry 0 or 1 is:
(A) 27
(B) 18
(C) 81
(D) 512 | 1 |
29. Find all the solutions of $4 \cos ^{2} x \sin x-2 \sin ^{2} x=3 \sin x$.
(a) $7 \pi / 24$
(b) $5 \pi / 24$
(c) $11 \pi / 24$
(d) $\pi / 24$ | 1 |
55 In Fig. 10-45a, an irregularly shaped plastic plate with uniform thickness and density (mass per unit volume) is to be rotated around an axle that is perpendicular to the plate face and through point $O$. The rotational inertia of the plate about
that axle is measured with the following method. A circular disk of ma... | 1 |
How and what to prepare in Organic Chemistry for JEE Advanced? | 0 |
7. For the following Assertion and Reason, the correct option is: Assertion: The $\mathrm{pH}$ of water increases with increase in temperature. Reason: The dissociation of water into $\mathrm{H}^{+}$and $\mathrm{OH}^{-}$is an exothermic reaction.
(a) Both assertion and reason are true, and the reason is the correct ... | 1 |
11.  | 1 |
13. If $f(x)=x^{11}+x^{9}-x^{7}+x^{3}+1$ and $f\left(\sin ^{-1}(\sin 8)\right)=\alpha, \alpha$ is a constant, then $f\left(\tan ^{-1}(\tan 8)\right)$ is equal to
a. $\alpha$
b $\alpha-2$
c. $\alpha+2$
d. $2-\alpha$ | 1 |
How cold can the Gobi Desert get, and how do its average temperatures compare to the ones in the Patagonian Desert? | 0 |
7. Number of circles which belong to the family and also touching $x$-axis are
a. 0
b. 1
c. 2
d. Infinite | 1 |
At what age can children share a bed room? | 0 |
- Write the IUPAC name of the following compound : $\left(\mathrm{CH}_{3}\right)_{3} \mathrm{CCH}_{2} \mathrm{COOH}$ | 1 |
What's the point of existence of other planets? | 0 |
Which is the best hindi movie in 2016? | 0 |
There is a small scale industry behind my house and their machines are always creating disturbance, where can I register a complaint against it? | 0 |
13. The formation of cyanohydrin from a ketone is an example of:
(a) Electrophilic addition
(b) Nucleophilic addition
(c) Nucleophilic substitution
(d) Electrophilic substiution | 1 |
What was the purpose of the Third Crusade? | 0 |
What will happen with my Google apps account when change the DNS MX records on my domain? | 0 |
9. Let $y=y(x)$ be the solution of the differential equation, $x \frac{d y}{d x}+y=x \log _{e} x,(x>1)$. If $2 y(2)=\log _{e} 4-1$, then $y(e)$ is equal to
(a) $-\frac{e}{2}$
(b) $-\frac{e^{2}}{2}$
(c) $\frac{e}{4}$
(d) $\frac{e^{2}}{4}$ | 1 |
15. If $a, b, c \in R^{+}$, then $(a+b+c)\left(\frac{1}{a}+\frac{1}{b}+\frac{1}{c}\right)$ is always
a. $\geq 12$
b. $\geq 9$
c. $\leq 12$
d. none of these | 1 |
Is Azad Kashmir and Jammu and Kashmir the same (culture, etc)? | 0 |
By 520 BC what empire ruled the northwestern Indian subcontinent? | 0 |
What is Quantum Electrodynamics? | 0 |
What are the best RCA to component adapter? | 0 |
In order for a unconstitutional statue to disappear, it has to be deleted by? | 0 |
If the brain is largely "set" by one's mid-twenties, does this make depression/anxiety during one's mid-twenties especially pernicious? | 0 |
When will be the offline exam of Infosys 2017? | 0 |
14. Two identical glass rods $S_{1}$ and $S_{2}$ (refractive index $=1.5$ ) have one convex end of radius of curvature 10 cm . They are placed with the curved surfaces at a distance $d$ as shown in the figure, with their axes (shown by the dashed line) aligned. When a point source of light $P$ is placed inside $\operat... | 1 |
What is the highest value of human beings? | 0 |
When will we see an industrial corridor project in Northeast India like the Delhi-Mumbai Industrial Corridor (DMIC) to boost the economy of the region? | 0 |
How do computers handle programs that don't fit onto CPU? | 0 |
What are the most beautiful cities you have been to, and why? | 0 |
(i) Butane-1,3-diol | 1 |
5.18 .9 g of a gas at $95^{\circ} \mathrm{C}$ occupied the same volume as 0.184 g of dihydrogen at $17^{\circ} \mathrm{C}$, at the same pressure. What is the molar mass of the gas? | 1 |
3. Which of the following graph roughly matches the variations of current in the circuit (with the coil and capacitor connected in the series) when the angular frequency is decreased from $50 \mathrm{rad} / \mathrm{s}$ to $25 \mathrm{rad} / \mathrm{s}$ ?
(a)
 the molar heat capacity of the gas in this process;
(b) the equation of the process in the variables $T, V$
(c) the work performed by on... | 1 |
10. The magnetic field $B$ due to a current-carrying circular loop of radius $12 \mathrm{~cm}$ at its centre is $0.50 \times 10^{-4} \mathrm{~T}$. Find the magnetic field due to this loop at a point on the axis at a distance of $5.0 \mathrm{~cm}$ from the centre. | 1 |
Can I do sex in periods? | 0 |
17. Which of the following combinations is correct?
IUPAC name
(A) Propan-l-ol
(B) Ethanoic acid
(C) Methanal
(D) Trichloromethane
\section*{Trivial name}
Isopropyl alcohol
Acetic acid
Formaldehyde
Chloroform
\section*{Common use}
Solvent
Solvent
Production of polymers
Fuel additive | 1 |
How many convicts per year had Britain been sending to the American colonies? | 0 |
If I am designing UI of a web application on Photoshop, what resolution should I choose? | 0 |
Who invented the KSOG? | 0 |
What was the colonial experience for Africans described as? | 0 |
Who denied children with disabilities to be unable to attend a public school? | 0 |
What is the best real estate agency to work for in Naples, Florida? | 0 |
What is the processor of my pc, 32 or 64 bit? | 0 |
25. A tube, closed at one end and containing air, produces, when excited, the fundamental note of frequency $512 \mathrm{~Hz}$. If the tube is opened at both ends the fundamental frequency that can be excited is (in $\mathrm{Hz}$ )
(a) 1024
(b) 512
(c) 256
(d) 128 | 1 |
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