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In a certain alternate Universe the Aufbau principle is known to not work.The order of shell filling is according to the ascending order of azimuthal quantum numbers. What kind of element then will Calcium Be ? ...

Use of class III lever ...

If the 10th term of a geometric progression is 9 and 4th term is 4, then its 7th term is ...

Three masses {{m}_{1}},,,{{m}_{2}} and {{m}_{3}} are attached to a string pulley system as shown. All three masses are held at rest and then released. To keep {{m}_{3}} at rest, the condition is *Image* ...

1. Sate two limitation of Bhor's theory of Hydrogen. 2.Show that maximum no.of electrons in an energy level of an atom is 2n2. ...

So this is for the people who were constantly asking for techniques of solving a sudoku. Although, I had a belief that one can never 'learn' the art of solving sudoku - that only comes with practice, I found this website whic ...

The use of Fulcrum: ...

The density of gas A is twice that of B at the same temperature the molecule weight of gas B is thrice that of A. the ratio of pressure of gas A and gas B will be: ...

A man weighing 60kg stands on an immobile platform ( a disc) with a mass of 100 kg.What are the no. of revolutions per minute made by the platform if the man moves along a circle with a radius of 5 mts. around the axis of rot ...

Which of these gases have a triple bond? ...

1. Two sets of four quantum no. of an electron are written below a.( n=4, l=3, s=1/2). ...

1. Two ...

Which of the following will never be found inside a robot? ...

The set of values of x which satisfy 5x + 2 < 3x + 8 and frac{{x + 2}}{{x - 1}} < 4 , is ...

What is the product formed formed when Methylbenzene is treated with SO2Cl2 in presence of peroxides?Thanks. ...

cosider these two reactions, *Image* My question is why in the case of chlorination the major product formed is different than the one formed in the bromination..? ...

Some converging light rays fall on a convex mirror of focal length of 30 cm. In absence of the mirror the rays could meet at distance of 20 cm from the pole of the mirror. Where do the rays meet in presence of the mirror? ...

A closed loop of cross sectional area 10-2 m2 which has inductance L= 10 mH and negligible resistance is placed in a time varying magnetic field.The figure shows the variation of B with time for the interval 4 sec.The field i ...

What is the value of tan-1((1/2)tan2A)+ tan-1(cotA)+ tan-1(cot3A) ? ...

What is the shape of the d and f orbitals????are they three dimensional or two D??? ...

A rod of length L and mass M is fixed at one of its end and is free to rotate about that point.A pendulum of mass m(the bob) and length L also hangs from that position.Now the bob of pendulum is allowed to fall from height L ...

A point object is moving on principal axis of a fixed spherical mirror.As the point object approaches the focus is it necessary that the image moves away from the focus?? Is it correct that product of magnitude of object dist ...

A ROD OA OF LENGTH L IS STANDING ON A SMOOTH GROUND.A SLIGHT JERK SETS THE IN MOTION. THERE IS A POINT P ON THE ROD WHOES LOCUS IS A CIRCLE IN THE SUBSEQUENT MOTION.LOCATE P. ...

Which species has the maximum number of lone pair of electrons on the central atom ...

Two masses of 4 kg and 5 kg are connected by a string passing through a frictionless pulley and are kept on a frictionless table as shown in the figure. The acceleration of 5 kg mass is *Image* Â ...

In the reaction overset{ ext{I},,}{mathop{C{{H}_{3}}CON{{H}_{2}}}},underset{Delta}{mathop{xrightarrow{{{P}_{2}}{{O}_{5}}}}},overset{text{I}}{mathop{C{{H}_{3}}CN}}, , the hybridisation state of the carbon atom (I) changes from ...

A straight chain hydrocarbon has the molecular formula {C_8}{H_{10}} . The hybridisation for the carbon atoms from one end of the chain to the other are respectively s{p^3},,s{p^2},,s{p^2},,s{p^3},,s{p^2},,s{p^2},,sp and sp. ...

Nuclei of radioactive element A are produced at rate t2 at any time t.The element A has decay constant λ.Let N be the number of nuclei of element A at any time t.At tinme t=t0 , dN/dt is minimum.Then find the number of nucle ...

How do you obtain ethyl amine from ethyl alcohol? ...

If the shear modulus of a wire is 5.9*1011 dyne/cm2, then the potential energy of a wire of 4000 cm in diameter and 5 cm long twisted through a angle of 10 minutes ,in joule,is: (a)1.253*10-12 (b)2.0*10-12 (c)1.0*10-12 (d)0.8 ...