Chemistry-
General
Easy
Question
H3PO4 is a tribasic acid and one of its salts is NaH2PO4. What volume of 1 M NaOH solution should be added to 12 g of NaH2PO4 to convert it into Na3PO4?
- 100 ml
- 200 ml
- 80 ml
- 300 ml
The correct answer is: 200 ml
Eq. of NaH2PO4 = Eq. of NaOH
Related Questions to study
Physics-
An aluminium ring B faces an electromagnet A. Which of the following statements is correct?
An aluminium ring B faces an electromagnet A. Which of the following statements is correct?
Physics-General
Physics-
An electric potential difference will be induced between the ends of the conductor shown in the figure when the conductor moves in the direction
An electric potential difference will be induced between the ends of the conductor shown in the figure when the conductor moves in the direction
Physics-General
Physics-
In the given figure the electron enters into the magnetic field. It deflects in direction:
In the given figure the electron enters into the magnetic field. It deflects in direction:
Physics-General
Physics-
There is a magnetic field acting in a plane perpendicular to this sheet of paper, downward into the paper as shown in figure. Particles in vacuum move in the plane of paper from left to right. The path indicated by the arrow could be traveled by:
There is a magnetic field acting in a plane perpendicular to this sheet of paper, downward into the paper as shown in figure. Particles in vacuum move in the plane of paper from left to right. The path indicated by the arrow could be traveled by:
Physics-General
Physics-
The magnetic induction at the centre O of the current carrying bent wire shown in the following diagram is:
The magnetic induction at the centre O of the current carrying bent wire shown in the following diagram is:
Physics-General
Physics-
Three long straight wires A,B and C are carrying currents as shown in the figure. The resultant force on B is directed:
Three long straight wires A,B and C are carrying currents as shown in the figure. The resultant force on B is directed:
Physics-General
Physics-
An ammeter of range 5 A is to be converted into an ammeter of range 10 V. If the resistance of ammeter be 0.1 
, then what resistance should be converted in series with it?
An ammeter of range 5 A is to be converted into an ammeter of range 10 V. If the resistance of ammeter be 0.1 , then what resistance should be converted in series with it?
Physics-General
Physics-
In the following figure, the value of resistor to be connected between C and D so that the resistance of the entire circuit between A and B does not change with the number of elementary sets used is
In the following figure, the value of resistor to be connected between C and D so that the resistance of the entire circuit between A and B does not change with the number of elementary sets used is
Physics-General
Physics-
Figure shows three resistor configurations R1,R2 and R3 connected to 3 V battery. If the power dissipated by the configuration R1 R2 and R3 is P1,P2 and P3, respectively, then (figure) :
Figure shows three resistor configurations R1,R2 and R3 connected to 3 V battery. If the power dissipated by the configuration R1 R2 and R3 is P1,P2 and P3, respectively, then (figure) :
Physics-General
Physics-
The three resistances of equal value are arranged in the different combinations shown in figure. Arrange them in increasing order of power dissipation :
I) 
II) 
III) 
IV) 
The three resistances of equal value are arranged in the different combinations shown in figure. Arrange them in increasing order of power dissipation :
I)
II)
III)
IV)
Physics-General
Physics-
If in the circuit, power dissipation is 150 W, then R is :
If in the circuit, power dissipation is 150 W, then R is :
Physics-General
Physics-
For maximum power dissipated in the external load of resistance R, R =
For maximum power dissipated in the external load of resistance R, R =
Physics-General
Physics-
Two cells of emf 4 V and 6 V are connected to an external load R = ¾ ohm. If = ¼ ohm the power dissipated in the load is
Two cells of emf 4 V and 6 V are connected to an external load R = ¾ ohm. If = ¼ ohm the power dissipated in the load is
Physics-General
General
The property of attracting or repelling objects on rubbing is called_____________.
The property of attracting or repelling objects on rubbing is called_____________.
GeneralGeneral
Physics-
In the given circuit, the voltmeter records 5 V. The resistance of the voltmeter (in ohms) is
In the given circuit, the voltmeter records 5 V. The resistance of the voltmeter (in ohms) is
Physics-General
