Chemistry-
General
Easy
Question
The ionization constant of ammonium hydroxide is at . Hydrolysis constant of ammonium chloride is:
The correct answer is:
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Chemistry-
The molar solubility (in mol ) of a sparingly soluble salt is The corresponding solubility product is given by the relation
The molar solubility (in mol ) of a sparingly soluble salt is The corresponding solubility product is given by the relation
Chemistry-General
Chemistry-
Acetyl salicylic acid called aspirin is a pain killer with = 2 If two tablets each of 0.09 g mass, containing aspirin are dissolved in 100 m solution Its pH will be:
Acetyl salicylic acid called aspirin is a pain killer with = 2 If two tablets each of 0.09 g mass, containing aspirin are dissolved in 100 m solution Its pH will be:
Chemistry-General
Chemistry-
Assuming compel. ionization witch will have maximum pH?
Assuming compel. ionization witch will have maximum pH?
Chemistry-General
Maths-
The solution set of in the interval is
The solution set of in the interval is
Maths-General
Maths-
is
is
Maths-General
Maths-
then the general value of is
then the general value of is
Maths-General
Maths-
The equation K possesses a solution if
The equation K possesses a solution if
Maths-General
Physics-
Mean life of a radioactive sample is 100 s. Then its half-life (in minutes) is
Mean life of a radioactive sample is 100 s. Then its half-life (in minutes) is
Physics-General
Physics-
The half-life period of a radioactive element is same as the mean lifetime of another radioactive element Y. Initially they have the same number of atoms. Then
The half-life period of a radioactive element is same as the mean lifetime of another radioactive element Y. Initially they have the same number of atoms. Then
Physics-General
Physics-
A cylinder of radius and thermal conductivity is surrounded by a cylindrical shell of linear radius and outer radius, whose thermal conductivity is There is no loss of heat across cylindrical surfaces, when the ends of the combined system are maintained at temperatures . The effective thermal conductivity of the system, in the steady state is
A cylinder of radius and thermal conductivity is surrounded by a cylindrical shell of linear radius and outer radius, whose thermal conductivity is There is no loss of heat across cylindrical surfaces, when the ends of the combined system are maintained at temperatures . The effective thermal conductivity of the system, in the steady state is
Physics-General
Physics-
The efficiency of a Carnot engine is 50% and temperature of sink is 500 K. If temperature of source is kept constant and its efficiency raised to 60%, then the required temperature of sink will be
The efficiency of a Carnot engine is 50% and temperature of sink is 500 K. If temperature of source is kept constant and its efficiency raised to 60%, then the required temperature of sink will be
Physics-General
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In a transistor circuit shown here the base current is 35 A. The value of the resistor Rb is
In a transistor circuit shown here the base current is 35 A. The value of the resistor Rb is
Physics-General
Physics-
An NPN-transistor circuit is arranged as shown in figure. It is
An NPN-transistor circuit is arranged as shown in figure. It is
Physics-General
Physics-
The symbol given in figure represents
The symbol given in figure represents
Physics-General
Physics-
For a transistor the parameter = 99. The value of the parameter is
For a transistor the parameter = 99. The value of the parameter is
Physics-General