iska answer kya hai
@Vinod
Let and be the roots of equation
is equal to:
6
-6
3
-3
3
Compound X will be
2
Find the compound "X" which give the following test:
Neutral FeCl3 -Ve
Fehling Solution -ve
Iodoform reaction +ve
Grignard reagent +ve
1
Two particles move at right angle to each other de Broglie wavelengths as and , particle suffers a perfectly inelastic collision. The de Broglie wavelength of final particle is given by
option 3
An interference experiment ratio of amplitude of coherent waves is . What is the ratio of maximum and minimum intensities of frings?
1
2
3
4
What is time at which the rate of dissipation is equal to the rate at which magnetic energy stored in the inductor?
1.4 sec
1.9 sec
5 sec
0.03 sec
option 3
Plane electromagnetic wave travelled in x-direction has electric field component E = 6V/m which is in y-direction. Corresponding Magnetic field component (B) is-
Bob at pendulum mass 2g, charge , an electric field of intensity 2000v/m. Angle of pendulum with vertical at equilibrium?
Consider a Steel wire of radius= 2mm of a load equal to 4 kg to be suspended from a rigid support and its top end, such that it is in hanging in a vertical position. What is its tensile stress due to its own weight? (take )
If gas molecules each of mass Kg collide over the area of in unit second with Speed , the pressure exerted will be?
In SI units, the dimension of is
The major product formed in the reaction given below will be:
If in a parallelogram ABDC, the coordinates of A,B and C are respectively (1,2), (3,4) and (2,5) , then the equation of the diagonal AD is:
50 mL of 0.5 M oxalic acid is needed to neutralize 25 mL of sodium hydroxide solution. The amount of in 50 mL of the given sodium hydroxide solution is :
20 g
4 g
10 g
40 g
Match the catalysts (Column I) with products (Column II).
Column Column
Catalyst Product
The increasing order of nucleophilicity of the following nucleophilies is :
The correct option among the following is :
Colloidal medicines are more effective because they have small surface area.
Addition of alum to water makes it unfit for drinking .
Colloidal particles in lyophobic sols can be precipitated by electrophoresis.
Brownian motion in colloidal solution is faster if the viscosity of the solution is very high.