Chemistry-
General
Easy
Question
I.U.P.A.C name of methyl cyanide is
- Cyano methane
- Ethanenitrile
- Methane nitrile
- Methyl-n-butyl amine
The correct answer is: Ethanenitrile
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The IUPAC name of the given compound 
or 
is
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Twoconverginglenseshavefocallengthf1andf2(f1>f2).The optical axis of the two lenses coincide. This lens system is used to from an image of real object. It is observed that final magnification of the image does not dependonthedistancex.Wholearrangementisshowninfigure.Finalmagnificationis:
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Considerasolidsphereofdensityandradius4R.Centreofthesphereisat origin. Two spherical cavities centered at (2R,0) and (–2R,0) are created in sphere. Radii of both cavities is R. In left cavity material of density 2 is filled while second cavity is kept empty. What is gravitational field at origin
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The number of 
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The figure illustrate how B, the flux density inside a sample of unmagnetised ferromagnetic material varies with B0, the magnetic flux density in which the sample is kept. For the sample to be suitable for making a permanent magnet
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Which curve may best represent the current deflection in a tangent galvanometer
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The basic magnetization curve for a ferromagnetic material is shown in figure. Then, the value of relative permeability is highest for the point
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Physics-General
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The relative permeability of a ferromagnetic substance varies with temperature (T) according to the curve
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A dip circle is adjusted so that its needle moves freely in the magnetic meridian. In this position, the angle of dip is 40°. Now the dip circle is rotated so that the plane in which the needle moves makes an angle of 30° with the magnetic meridian. In this position the needle will dip by an angle
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Two identical bar magnets with a length 10 cm and weight 50 gm-weight are arranged freely with their like poles facing in a inverted vertical glass tube. The upper magnet hangs in the air above the lower one so that the distance between the nearest pole of the magnet is 3mm. Pole strength of the poles of each magnet will be
Two identical bar magnets with a length 10 cm and weight 50 gm-weight are arranged freely with their like poles facing in a inverted vertical glass tube. The upper magnet hangs in the air above the lower one so that the distance between the nearest pole of the magnet is 3mm. Pole strength of the poles of each magnet will be
Physics-General
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A small coil C with N = 200 turns is mounted on one end of a balance beam and introduced between the poles of an electromagnet as shown in figure. The cross sectional area of coil is A= 1.0 cm2, length of arm OA of the balance beam is 
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on the balance pan. Find the magnetic induction at the spot where coil is located.
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Physics-General
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Two short magnets of equal dipole moments M are fastened perpendicularly at their centre (figure). The magnitude of the magnetic field at a distance d from the centre on the bisector of the right angle is
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Physics-General
