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- Problem 8.3
Using Stock notation, represent the following compounds : $\mathrm{HAuCl}_4, \mathrm{Tl}_2 \mathrm{O}, \mathrm{FeO}$, $\mathrm{Fe}_2 \mathrm{O}_3, \mathrm{CuI}, \mathrm{CuO}, \mathrm{MnO}$ and $\mathrm{MnO}_2$. | 1 |
9. An element with molar mass $2.7 \times 10^{-2} \mathrm{~kg} \mathrm{~mol}^{-1}$ forms a cubic unit cell with edge length $405 \mathrm{pm}$. If its density is $2.7 \times 10^{3} \mathrm{~kg} \mathrm{~m}^{-3}$, the radius of the element is approximately _________ $\times 10^{-12} \mathrm{~m}$ (to the nearest integer). | 1 |
8.$ At $20^{\circ} \mathrm{C}$, a brass cube has edge length 30 cm . What is the increase in the surface area when it is heated from $20^{\circ} \mathrm{C}$ to $75^{\circ} \mathrm{C}$ ? | 1 |
By the end of this period, about what percentage of Western Europeans were serfs? | 0 |
Why did Cannon believe that physiological responses were insufficient cause for emotions? | 0 |
What country invaded Panama to capture Noriega? | 0 |
In what decade did New Delhi first extend significantly from Lutyen's Delhi? | 0 |
How frequently do women masturbate? | 0 |
What is a capacity of diesel engine in a train? | 0 |
7. The line passing through the extremity $A$ of the major axis and extremity $B$ of the minor axis of the ellipse $x^{2}+9 y^{2}=$ 9 meets its auxiliary circle at the point $M$. Then the area of the triangle with vertices at $A, M$ and the origin $O$ is
a. $\frac{31}{10}$
b. $\frac{29}{10}$
c. $\frac{21}{10}$
d. $\fra... | 1 |
Why do cats and dogs chase their tails? | 0 |
13. $5 \cdot 5 \mathrm{~g}$ of a mixture of $\mathrm{FeSO}_{4} \cdot 7 \mathrm{H}_{2} \mathrm{O}$ and $\mathrm{Fe}_{2}\left(\mathrm{SO}_{4}\right)_{3} \cdot 9 \mathrm{H}_{2} \mathrm{O}$ requires $5 \cdot 4 \mathrm{~mL}$ of $0 \cdot 1 \mathrm{~N}$ $\mathrm{KMnO}_{4}$ solution for complete oxidation. Calculate the number... | 1 |
What could cause my allergy to horses? | 0 |
14. One mole of an ideal gas at $300 \mathrm{~K}$ in thermal contact with surroundings expands isothermally from $1.0 \mathrm{~L}$ to $2.0 \mathrm{~L}$ against a constant pressure of $3.0 \mathrm{~atm}$. In this process, the change in entropy of surroundings $\left(\Delta S_{\text {surr }}\right)$ in $\mathrm{JK}^{-1}$... | 1 |
What are the ways for ending a stitch? | 0 |
What empire conquered most of the subcontinent in the 3rd and 4th centuries BC? | 0 |
Whose victory in US presidential election will benefit India, Donald Trump or Hillary Clinton and how? | 0 |
What is the salary of Kapil Sharma per episode? | 0 |
34. The function $f(x)=x^{1 / 3}(x-1)$
a. has two inflection points
b. has one point of extremum
c. is non-differentiable
d. Range of $f(x)$ is $\left[-3 \times 2^{-8 / 3}, \infty\right.$ ) | 1 |
What are the best ways to start a fight? | 0 |
Who are the best prospects for the 2016 NFL Draft? | 0 |
What does it mean to have a 32 bit processor running 64 bit OS? Is it even possible? | 0 |
41. Casseterite is ore of ........... | 1 |
22. In a solid ' $A B$ ' having the $\mathrm{NaCl}$ structure, ' $A$ ' atoms occupy the corners of the cubic unit cell. If all the face-centered atoms along one of the axes are removed, then the resultant stoichiometry of the solid is
$[2001 S]$
(a) $A B_{2}$
(b) $A_{2} B$
(c) $A_{4} B_{3}$
(d) $A_{3} B_{4}$ | 1 |
Myers-Briggs Type Indicator: What is it like to be an INFJ? | 0 |
How much does a person make for getting a million views on YouTube? | 0 |
27. The average translational kinetic energy of $\mathrm{O}_{2}$ (molar mass 32) molecules at a particular temperature is $0.048 \mathrm{eV}$. The translational kinetic energy of $\mathrm{N}_{2}$ (molar mass 28) molecules in $\mathrm{eV}$ at the same temperature is
(a) 0.0015
(b) 0.003
(c) 0.048
(d) 0.768 | 1 |
How do I download movies from torrent sites? | 0 |
(c)https://cdn.pureessence.tech/8ba49201-d14f-4a69-b427-396de0d89457.png.png | 1 |
Who can be credited with saying essentially humans are the gods of gods? | 0 |
43. Ground state electronic configuration of nitrogen atom can be represented by
(a) 
(b) 
(c) ![](https://cdn.pureessence.tech/fbee570f-4d0c-4a83-8be0-f0a90cbae215.pn... | 1 |
If you ask a friend how they are after ending his affair with a married woman and he says, "I don't want to talk about it" what does this mean? | 0 |
What is a rough endoplasmic reticulum? | 0 |
What is there little coherent relationships between? | 0 |
How do you get over a divorce and not being able to spend as much time with your children? | 0 |
How do polytheistic religions view sex by God or gods? | 0 |
41. A region in the $x-y$ plane is bounded by the curve $y=\sqrt{25-x^{2}}$ and the line $y=0$. If the point $(a, a+1)$ lies in the interior of the region, then
a. $a \in(-4,3)$
b. $a \in(-\infty,-1) \in(3, \infty)$
c. $a \in(-1,3)$
d. None of these | 1 |
In what year did CBS sell CBS Songs? | 0 |
6. A particle having the same charge as of electron moves in a circular path of radius $0.5 \mathrm{~cm}$ under the influence of a magnetic field of $0.5 \mathrm{~T}$. If an electric field of $100 \mathrm{~V} / \mathrm{m}$ makes it to move in a straight path, then the mass of the particle is (Take, charge of electron $... | 1 |
-2 A partially evacuated airtight container has a tight-fitting lid of surface area $77 \mathrm{~m}^{2}$ and negligible mass. If the force required to remove the lid is 480 N and the atmospheric pressure is $1.0 \times 10^{5}$ Pa , what is the internal air pressure? | 1 |
What are some examples of psychological barriers? | 0 |
How does the HP OfficeJet 4620 Airprint compare to the HP Color LaserJet Enterprise M553x? | 0 |
Example 7 Let A be the set of all 50 students of Class X in a school. Let $f: \mathrm{A} \rightarrow \mathbf{N}$ be function defined by $f(x)=$ roll number of the student $x$. Show that $f$ is one-one but not onto. | 1 |
Which is the best picnic spot in pune? | 0 |
How widely accepted are credit cards at small businesses and restaurants in Pakistan? | 0 |
17. In a chemical determination of the atomic weight of vanadium, 2.8934 g of pure $\mathrm{VOCl}_{3}$ was allowed to undergo a set of reactions as a result of which all the chlorine contained in this compound was converted to AgCl which weighed $7 \cdot 1801 \mathrm{~g}$. Calculate the atomic weight of vanadium. $(\ma... | 1 |
4. If the system of equations $2 x+3 y-z=0, x+k y-2 z=0$ and $2 x-y+z=0$ has a non-trivial solution $(x, y, z)$, then $\frac{x}{y}+\frac{y}{z}+\frac{z}{x}+k$ is equal to
(2019 Main, 9 April II)
(a) -4
(b) $\frac{1}{2}$
(c) $-\frac{1}{4}$
(d) $\frac{3}{4}$ | 1 |
Will humans ever colonize other solar systems? | 0 |
Who decided to sell US reserves of the British pound to cause the pound to collapse? | 0 |
27. How many gram moles of HCl will be required to prepare one litre of a buffer solution (containing NaCN and HCl ) of pH 8.5 using 0.01 gram-formula weight of NaCN ? $K_{\text {dissociation }}(\mathrm{HCN})=4.1 \times 10^{-10}$
(0.0088 mole) | 1 |
Can I come to know about status of assessee by seeing his pan card? | 0 |
26. In the molecular orbital model of benzene, how many pi-electrons are in bonding molecular orbitals?
(A) 6
(B) 5
(C) 4
(D) 3
(E) 2 | 1 |
5.10 Discuss the effect of pressure and temperature on the adsorption of gases on solids. | 1 |
28. Calculate the acceleration of cylinder.
(a) $20 \mathrm{~m} / \mathrm{s}^{2}$
(b) $10 \mathrm{~m} / \mathrm{s}^{2}$
(c) $5 \mathrm{~m} / \mathrm{s}^{2}$
(d) None of these | 1 |
What are some of the characteristics of Baroque art? | 0 |
18. A solution of $\mathrm{KBr}$ is treated with each of the following. Which one would liberate bromine
(a) $\mathrm{Cl}_{2}$
(b) $\mathrm{HI}$
(c) $\mathrm{I}_{2}$
(d) $\mathrm{SO}_{2}$ | 1 |
What specific educational reforms should President Donald Trump advocate to achieve better long-term economic growth for the United States? | 0 |
Problem 4.3 Explain the structure of $\mathrm{CO}_{3}^{2-}$ ion in terms of resonance. | 1 |
What was the only difference in the study between gay and straight men? | 0 |
41. Give reasons for the following :
(i) $\left(\mathrm{SiH}_{3}\right)_{3} \mathrm{~N}$ is a weaker base than $\left(\mathrm{CH}_{3}\right)_{3} \mathrm{~N}$.
(ii) The molecule of magnesium chloride is linear whereas that of stannous chloride is angular. [1987 - 1 Mark]
(iii) Graphite is used as a solid lubricant;
... | 1 |
6. What is the parent name for the following alkane ?
(Note : The parent name corresponds to the longest continuous chain of carbon atoms.)
(A) Heptane
(B) Octane
(C) Nonane
(D) Decane | 1 |
During which period was the philosophy of humanism next updated? | 0 |
Who wotked with Carl Rogers on humanistic phycology? | 0 |
Example 3 Which waves constitute amplitude-modulated band? | 1 |
22. Bouveault- Blane reduction reaction involves :
(a) Reduction of an acyl halide with $\mathrm{H}_{2} / Pd$
(b) Reduction of an anhydride with $\mathrm{LiAlH_4}$
(c) Reduction of an ester with Na/ $\mathrm{C_2}{H_5}OH$
(d) Reduction of a carbonyl compound with Na/Hg amd HCl. | 1 |
Which company is responsible for electricity in Hyderabad? | 0 |
24. In the circuit shown, $L=1 \mu \mathrm{H}, C=1 \mu \mathrm{F}$ and $R=1 \mathrm{k} \Omega$. They are connected in series with an AC source $V=V_{0} \sin \omega t$ as shown. Which of the following options is/are correct?
 octahedral, tetrahedral and square planar
(b) tetrahedral, square planar and octahedral
(c) square planar, tetrahedral and octahedral
(d)... | 1 |
3.7 Define conductivity and molar conductivity for the solution of an electrolyte. Discuss their variation with concentration. | 1 |
How do I fix a 403 forbidden error? | 0 |
What are the 5 things about India that we should be proud of, and what are the 5 things about India that we should "not" be proud of? | 0 |
7. If $f(x)=A \sin \left(\frac{\pi x}{2}\right)+B, f^{\prime}\left(\frac{1}{2}\right)=\sqrt{2}$ and $\int_{0}^{1} f(x) d x=\frac{2 A}{\pi}$, then constants $A$ and $B$ are
a. $\frac{\pi}{2}$ and $\frac{\pi}{2}$
b. $\frac{2}{\pi}$ and $\frac{3}{\pi}$
c. 0 and $\frac{-4}{\pi}$
d. $\frac{4}{\pi}$ and 0 | 1 |
10. The normal to the curve $x^{2}+2 x y-3 y^{2}=0$ at $(1,1)$
(a) does not meet the curve again
(b) meets in the curve again the second quadrant
(c) meets the curve again in the third quadrant
(d) meets the curve again in the fourth quadrant | 1 |
17. Three concentric conducting spherical shells carry charges $+4 Q$ on the inner shell $-2 Q$ on the middle shell and $+6 Q$ on the outer shell. The charge on the inner surface of the outer shell is
(a) 0
(b) $4 Q$
(c) $-Q$
(d) $-2 Q$ | 1 |
4.144. Draw the approximate vector diagrams of currents in the circuits shown in Fig. 4.35. The voltage applied across the points $A$ and $B$ is assumed to be sinusoidal; the parameters of each circuit are so chosen that the total current $I_{0}$ lags in phase behind the external voltage by an angle $\varphi$.
 \mathrm{T}$ exists in space. Find the magnetic force acting on the charge. | 1 |
32. Calculate the relative rates of diffusion of $235 \mathrm{UF}_{6}$ and $238 \mathrm{UF}_{6}$ in the gaseous form.
(1.0043: 1) | 1 |
31. The sum of 20 terms of the series $3+7+14+24+37+\cdots$ is
a. $4 \mathrm{O} 10$
b. 3860
c. 4240
d. none of these | 1 |
5. A wheel of radius r and moment of inertia I about its axis is fixed at the top of an inclined plane of inclination θ as shown in figure (10-W2). A string is wrapped round the wheel and its free end supports a block of mass M which can slide on the plane. Initially, the wheel is rotating at a speed ω in a direction s... | 1 |
5. Statement 1: If $n \in N$ and ' $n$ ' is not a multiple of 3 and $\left(1+x+x^{2}\right)^{n}=\sum_{r=0}^{2 n} a_{r} x^{r}$, then the value of $\sum_{r=0}^{n}(-1)^{r} a_{r}{ }^{n} C_{r}$ is zero.
Statement 2: The coefficient of $x^{n}$ in the expansion of $\left(1-x^{3}\right)$ is zero, if $n=3 k+1$ or $n=3 k+2$. | 1 |
-58 For the damped oscillator system shown in Fig. 15-16, with $m=250 \mathrm{~g}, k=85 \mathrm{~N} / \mathrm{m}$, and $b=70 \mathrm{~g} / \mathrm{s}$, what is the ratio of the oscillation amplitude at the end of 20 cycles to the initial oscillation amplitude? | 1 |
What is the feeling of God being everywhere? | 0 |
What are two examples of trees in the broadleaf forests east of the Aravalli's? | 0 |
1. Show that the three lines with direction cosines
$$
\frac{12}{13}, \frac{-3}{13}, \frac{-4}{13} ; \frac{4}{13}, \frac{12}{13}, \frac{3}{13} ; \frac{3}{13}, \frac{-4}{13}, \frac{12}{13} \text { are mutually perpendicular. }
$$ | 1 |
Why do men get sleepy after sex? | 0 |
32. $z_{1}$ and $z_{2}$ are the roots of the equation $z^{2}-a z+b=0$, where $\left|z_{1}\right|$ $=\left|z_{2}\right|=1$ and $a, b$ are non-zero complex numbers, then
a. $|a| \leq 1$
b. $|a| \leq 2$
c. $\arg \left(a^{2}\right)=\arg (b)$
d. $\arg a=\arg \left(b^{2}\right)$ | 1 |
What is the most embarrassing moment your crush had in front of you? | 0 |
What were lies told by your parents? | 0 |
When did the first World War begin? | 0 |
What happens when both the federal and state governments have regulations that overlap? | 0 |
How do I become a good Java web developer? | 0 |
How do I filter in-demand projects on Indiegogo? | 0 |
26. Orthocentre of triangle with vertices $(0,0),(3,4)$ and $(4,0)$ is
(a) $3, \frac{5}{4}$
(b) $(3,12)$
(c) $3, \frac{3}{4}$
(d) $(3,9)$ | 1 |
In trials and court cases do non Christians have to place their hand on the bible too? | 0 |
10. A signal $A \cos \omega t$ is transmitted using $v_{0} \sin \omega_{0} t$ as carrier wave. The correct amplitude modulated (AM) signal is
(a) $\left(v_{0} \sin \omega_{0} t+A \cos \omega t\right.$
(b) $\left(v_{0}+A\right) \cos \omega t \sin \omega_{0} t$
(c) $v_{0} \sin \left[\omega_{0}(1+0.01 A \sin \omega t... | 1 |
How are job opportunities in Germany for an Indian student with a Master's in mechanical engineering? | 0 |
8. The value of $\operatorname{sum} \sum_{n=1}^{13}\left(i^{n}+i^{n+1}\right)$, where $i=\sqrt{-1}$, equals
(a) $i$
(b) $i-1$
(c) $-i$
(d) 0
(1998, 2M) | 1 |
Why is Mumbai not a hub for biotechnology? | 0 |
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