What does 'balance of trade' refer to?

Important Questions on Current Electricity

EASY

Physics>Electricity and Magnetism>Current Electricity>Ohm's Law

The correct charge and co-ordination number of $\mathrm{‘}\mathrm{Fe}\mathrm{’}$ in  ${\mathrm{K}}_3\left[\mathrm{Fe}{\left(\mathrm{CN}\right)}_6\right]$ is

EASY

Physics>Electricity and Magnetism>Current Electricity>Ohm's Law

What is a bidentate ligand? Give one example.

EASY

Physics>Electricity and Magnetism>Current Electricity>Ohm's Law

Write the hybridisation and number of unpaired electrons in the complex ${\left[{\mathrm{CoF}}_6\right]}^{3-}$. (Atomic No. of $\mathrm{Co}=27$).

EASY

Physics>Electricity and Magnetism>Current Electricity>Ohm's Law

If the angle between the lines $\frac{x}{2}=\frac{y}{2}=\frac{z}{1}$ and $\frac{5-x}{-2}=\frac{7y-14}{P}=\frac{z-3}{4}$ is ${\cos }^{-1}\left(\frac{2}{3}\right),$ then $P$ is equal to

EASY

Physics>Electricity and Magnetism>Current Electricity>Ohm's Law

Explain the term coordination entity.

MEDIUM

Physics>Electricity and Magnetism>Current Electricity>Ohm's Law

If the lines $x=ay+b,z=cy+d$ and $x=a^{\prime }z+b^{\prime },y=c^{\prime }z+d^{\prime }$ are perpendicular, then

EASY

Physics>Electricity and Magnetism>Current Electricity>Ohm's Law

Write the coordination number and oxidation state of Platinum in the complex $\left[\mathrm{Pt}{\left(\mathrm{en}\right)}_2{\mathrm{Cl}}_2\right]$.

EASY

Physics>Electricity and Magnetism>Current Electricity>Ohm's Law

Find the value of $k$ so that the lines $x=-y=kz$ and $x-2=2y+1=-z+1$ are perpendicular to each other.

EASY

Physics>Electricity and Magnetism>Current Electricity>Ohm's Law

Explain the term Ligand.

EASY

Physics>Electricity and Magnetism>Current Electricity>Ohm's Law

Explain the term coordination number.

MEDIUM

Physics>Electricity and Magnetism>Current Electricity>Ohm's Law

If lines $\frac{x-1}{-3}=\frac{y-2}{2k}=\frac{z-3}{2}$ and $\frac{x-1}{3k}=\frac{y-5}{1}=\frac{z-6}{-5}$ are mutually perpendicular, then $k$ is equal to

EASY

Physics>Electricity and Magnetism>Current Electricity>Ohm's Law

The coordination numbers of $\mathrm{C}\mathrm{o}$ and $\mathrm{A}\mathrm{l}$ in $\left[\mathrm{C}\mathrm{o}\left(\mathrm{C}\mathrm{l}\right){\left(\mathrm{e}\mathrm{n}\right)}_2\right]\mathrm{C}\mathrm{l}$ and ${\mathrm{K}}_3\left[\mathrm{A}\mathrm{l}{\left({\mathrm{C}}_2{\mathrm{O}}_4\right)}_3\right],$ respectively are:
(en $=$ ethane-1, 2-diamine)

MEDIUM

Physics>Electricity and Magnetism>Current Electricity>Ohm's Law

Let $A\left(3,0,-1\right),\mathrm{ }B\left(2,10,6\right)$ and $C\left(1,2,1\right)$ be the vertices of a triangle and $M$ be the mid-point of $AC$. If $G$ divides $BM$ in the ratio, $2:1$ , then $\mathrm{c}\mathrm{o}\mathrm{s}\left(\mathrm{\angle }GOA\right)$ ($O$ being the origin) is equal to

EASY

Physics>Electricity and Magnetism>Current Electricity>Ohm's Law

What is the oxidation number of gold in the complex $[{\mathrm{AuCl}}_4{]}^{-}$?

HARD

Physics>Electricity and Magnetism>Current Electricity>Ohm's Law

Find the value of $\lambda$, so that the lines $\frac{1-x}{3}=\frac{7y-14}{\lambda }=\frac{z-3}{2}$ and $\frac{7-7x}{3\lambda }=\frac{y-5}{1}=\frac{6-z}{5}$ are at right angles. Also, find whether the lines are intersecting or not.

EASY

Physics>Electricity and Magnetism>Current Electricity>Ohm's Law

If 20J of energy is trapped at producer level, then how much energy will be available to peacock as food in the following chain?
plant $\to$ mice $\to$ snake $\to$ peacock

EASY

Physics>Electricity and Magnetism>Current Electricity>Ohm's Law

Out of ${\left[{\mathrm{CoF}}_6\right]}^{-3}$ and $[\mathrm{Co}{\left(\mathrm{en}\right)}_3{]}^{3+}$, which complex compound more stable.

EASY

Physics>Electricity and Magnetism>Current Electricity>Ohm's Law

Explain the terms. Central metal atom/ion.

MEDIUM

Physics>Electricity and Magnetism>Current Electricity>Ohm's Law

What is an ambidentate ligand?

EASY

Physics>Electricity and Magnetism>Current Electricity>Ohm's Law

Amongst the following, identify the species with an atom in $+6$ oxidation state.