In a region, steady and uniform electric and magnetic fields are present. These two fields are parallel to each other. A charged particle is released from rest in this region. The path of the particle will be a

Which of the following units denotes the dimension {{M{L^2}} \over {{Q^2}}}, where $$Q$$ denotes the electric charge?

The flux linked with a coil at any instant $${}^{\prime }{t}^{\prime }$$ is given by $$\varphi =10t^2-50t+250$$ The induced $$emf$$ at $$t=3s$$ is

An inductor $$(L=100$$ $$mH)$$, a resistor $$\left(R=100\Omega \right)$$ and a battery $$\left(E=100V\right)$$ are initially connected in series as shown in the figure. After a long time the battery is disconnected after short circuiting the points $$A$$ and $$B$$. The current in the circuit $$1$$ $$ms$$ after the short circuit is

Four point masses, each of value $$m,$$ are placed at the corners of a square $$ABCD$$ of side $$l$$. The moment of inertia of this system about an axis passing through $$A$$ and parallel to $$BD$$ is

A thin circular ring of mass $$m$$ and radius $$R$$ is rotating about its axis with a constant angular velocity $$\omega$$. Two objects each of mass $$M$$ are attached gently to the opposite ends of a diameter of the ring. The ring now rotates with an angular velocity $${\omega }^{\prime }=$$

A force of $$-F\hat{k}$$ acts on $$O,$$ the origin of the coordinate system. The torque about the point $$(1,-1)$$ is

The alkene formed as a major product in the above elimination reaction is

The IUPAC name for the complex [Co(NO2)(NH3)5]Cl2 is

How many EDTA (ethylenediaminetetraacetic acid) molecules are required to make an octahedral complex with a Ca2+ ion?

In Fe(CO)5, the Fe – C bond possesses :

Nickel (Z = 28) combines with a uninegative monodentate ligand X– to form a paramagnetic complex [NiX4]2− . The number of unpaired electron(s) in the nickel and geometry of this complex ion are, respectively

According to Bohr's theory, the angular momentum of an electron in 5th orbit is

Uncertainty in the position of an electron (mass = 9.1 $$\times$$ 10-31 kg) moving with a velocity 300 ms-1, accurate upto 0.001% will be (h = 6.63 $$\times$$ 10-34 Js)

Which of the following sets of ions represents a collection of isoelectronic species?

Following statements regarding the periodic trends of chemical reactivity of the alkali metals and the halogens are given. Which of these statements gives the correct picture?

The increasing order of the first ionization enthalpies of the elements B, P, S and F (lowest first) is :

Total volume of atoms present in a face-centre cubic unit cell of a metal is (r is atomic radius) :

Reaction of trans-2-phenyl-1-bromocyclopentane on reaction with alcoholic KOH produces

The structure of the major product formed in the following reaction is