Chemistry-
General
Easy
Question
How do we differentiate between Fe3+ and Cr3+ in group III ?
- By taking excess of NH4OH
- By increasing ion concentration
- By decreasing ion concentration
- Both B and C
The correct answer is: By decreasing ion concentration
Related Questions to study
chemistry-
In qualitative analysis , to identify the IIA group sulphides , HCl is added to salt solution before the addition of H2S . Because
In qualitative analysis , to identify the IIA group sulphides , HCl is added to salt solution before the addition of H2S . Because
chemistry-General
maths-
If then
If then
maths-General
maths-
are the nth roots of unity and n is an even natural number, then
are the nth roots of unity and n is an even natural number, then
maths-General
maths-
Statement-I : If then
Statement-II : then
Statement-I : If then
Statement-II : then
maths-General
biology
Assertion :- Glycolysis is common between aerobic & anaerobic respiration.
Reason:- Glycolysis can takes place in presence and absence of O2
Assertion :- Glycolysis is common between aerobic & anaerobic respiration.
Reason:- Glycolysis can takes place in presence and absence of O2
biologyGeneral
biology
Assertion :- Glycolysis is common step in aerobic & anaerobic respiration.
Reason:- Glycolysis splits the pyruvate in to H2O & CO2
Assertion :- Glycolysis is common step in aerobic & anaerobic respiration.
Reason:- Glycolysis splits the pyruvate in to H2O & CO2
biologyGeneral
physics-
Light wave is travelling along -direction. If the corresponding E vector at any time is along the -axis, the direction of B vector at that time is along
Light wave is travelling along -direction. If the corresponding E vector at any time is along the -axis, the direction of B vector at that time is along
physics-General
maths-
A flag staff stands upon the top of a building. At a distance d mt the angles of elevation of the tops of the flag staff and building are α and β respectively. The height of the flag staff is
A flag staff stands upon the top of a building. At a distance d mt the angles of elevation of the tops of the flag staff and building are α and β respectively. The height of the flag staff is
maths-General
maths-
An aeroplane flying horizontally 1km above the ground is observed at an elevation of 60°. After 10sec the elevation is observed to be 30° then the uniform speed per hour of the aeroplane is
An aeroplane flying horizontally 1km above the ground is observed at an elevation of 60°. After 10sec the elevation is observed to be 30° then the uniform speed per hour of the aeroplane is
maths-General
maths-
A pole 50mt high stand on a building 250mt high. To an observer at a height of 300mt the building and the pole subtends same angle. The distance of the observer from the top of pole is
A pole 50mt high stand on a building 250mt high. To an observer at a height of 300mt the building and the pole subtends same angle. The distance of the observer from the top of pole is
maths-General
maths-
If w is a complex cube root of unity then the value of is
If w is a complex cube root of unity then the value of is
maths-General
maths-
If z=x+iy and P represents z in the Argand plane and mod(2z-3)=4, then the locus of P is
If z=x+iy and P represents z in the Argand plane and mod(2z-3)=4, then the locus of P is
maths-General
physics-
The maximum kinetic energy (Ek) of emitted photoelectrons against frequency v of incident radiation is plotted as shown in fig. The slope of the graph is equal to
The maximum kinetic energy (Ek) of emitted photoelectrons against frequency v of incident radiation is plotted as shown in fig. The slope of the graph is equal to
physics-General
physics-
From the graph shown, the value of Work function if the stopping potential (V), and frequency of the incident light, v, are on y and x- axes respectively is
From the graph shown, the value of Work function if the stopping potential (V), and frequency of the incident light, v, are on y and x- axes respectively is
physics-General
physics-
Percentage of mass lost during the fission of 92U235 approximately is
Percentage of mass lost during the fission of 92U235 approximately is
physics-General