A 20.0 mL sample of a 0.20 M solution of the weak diprotic acid H_(2)A is titrated with 0.250 M NaOH. The concentration of solution at the second equivalent point is:
An iron rod of length 0.5 m, radius 0.02 m having relative permeability 120 is placed inside a long solenoid carrying a current of 0.8 A. If the solenoid has 250 turns m^-1 , find the magnetic dipole moment acquired by the iron rod.
An iron rod of length 0.5 m, radius 0.02 m having relative permeability 120 is placed inside a long solenoid carrying a current of 0.8 A. If the solenoid has 250 turns m^-1 , find the intensity of magnetisation
1000mL 1M CuSO_4 (aq) is electrolysed by 9.65 A current for 100 sec using Pt-electrode which is /are correct statements?
A constant force acting on a body of mass 3.0 kg changes its speed from 2.0 m s^-1 to 3.5 m s^-1 in 25 s. The direction of the motion of the body remains unchanged. What is the magnitude and direction of the force ?
Calculate the magnetic field due to a circular coil of 250 turns and of diameter 0.1m, carrying a current of 7A at a point on the axis of the coil at a distance 0.12m from the center of the coil.
A solenoid is 2.0 m long and 3.0 cm in diamter. It has 5 layers of winding of 1,000 turns each an carries a current of 5.0 A. What is the agnetic field at its centre. ? Use the standard value of mu_0
The degree of hydrolysis of 0.1 M RNH_(3)Cl solution is 1.0%. If the concentration of RNH_(3)Cl is made 0.4 M, what is the new degree of hydrolysis (in percentage)?
A volume of 12.5 mL of 0.05 M SeO_(2) reacts with 25 mL of 0.1 M CrSO_(4) which is oxidised to Cr^(3+) . To what oxidation state was the selenium converted by the reaction ?
