Chemistry-
General
Easy
Question
Ethyl iodide on treatment with dry 
will yield:
- Ethyl alcohol
- Diethyl ether
- Ethyl methyl ether
- Ethylene
The correct answer is: Diethyl ether
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If X is a square matrix of order 3 × 3 and 
is a scalar, then adj (
is equal to
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The effective focal length of the lens combination shown in figure is - 60 cm The radii of curvature of the curved surfaces of the plano-convex lenses are 12 cm each and refractive index of the material of the lens is 1.5 The refractive index of the liquid is
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physics-General
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A ray of ligth enters into a glass slab from air as shown .If refractive of glass slab is given by 
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physics-General
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The refraction index of an anisotropic medium varies as 
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physics-General
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Due to a vertical temperature gradient in the atmosphere, the index of refraction varies Suppose index of refraction varies as 
is the index of refraction at the surface and a 
A person of height h = 2.0 m stands on a level surface Beyond what distance will he not see the runway?
Due to a vertical temperature gradient in the atmosphere, the index of refraction varies Suppose index of refraction varies as is the index of refraction at the surface and a A person of height h = 2.0 m stands on a level surface Beyond what distance will he not see the runway?
physics-General
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Find the variation of refractive index assuming it to be a function of y such that a ray entering origin at grazing incidence follows a parabolic path y = x2 as shown in fig
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Metal oxides which decomposes on heating is
Metal oxides which decomposes on heating is
chemistry-General
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One mole of an organic compound A with the formula 
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chemistry-General
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A reflecting surface is represented by the equation 
A ray travelling in negative x-direction is directed towards positive y-direction after reflection from the surface at point P Then co-ordinates of point P are
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physics-General
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A bird in air is diving vertically over a tank with speed 5cm/s Base of the tank is silvered A fish in the tank is rising upward along the same line with speed 2cm/s Water level is falling at a rate of 2cm/s 
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A bird in air is diving vertically over a tank with speed 5cm/s Base of the tank is silvered A fish in the tank is rising upward along the same line with speed 2cm/s Water level is falling at a rate of 2cm/s Speed of the image of bird relative to the fish looking upward in cm/s is
physics-General
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A bird in air is diving vertically over a tank with speed 5cm/s Base of the tank is silvered A fish in the tank is rising upward along the same line with speed 2cm/s Water level is falling at a rate of 2cm/s Speed of the image of fish formed after reflection in the mirror as seen by the bird in cm/s
A bird in air is diving vertically over a tank with speed 5cm/s Base of the tank is silvered A fish in the tank is rising upward along the same line with speed 2cm/s Water level is falling at a rate of 2cm/s Speed of the image of fish formed after reflection in the mirror as seen by the bird in cm/s
physics-General
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Consider the system of equations ax+by =0 , cx +dy=0 where a, b, c, d 
{0,1}
Statement ‐ I The probability that the system of equations has a unique solution is 3/8 Statement ‐ II The probability that the system has a solution is 1.
Consider the system of equations ax+by =0 , cx +dy=0 where a, b, c, d {0,1}
Statement ‐ I The probability that the system of equations has a unique solution is 3/8 Statement ‐ II The probability that the system has a solution is 1.
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Which alcohol cannot be oxidized by 
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A bird in air is diving vertically over a tank with speed 5cm/s Base of the tank is silvered A fish in the tank is rising upward along the same line with speed 2cm/s Water level is falling at a rate of 2cm/s Speed of the image of fish as seen by the bird directly in cm/s is
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physics-General
