Physics-
General
Easy
Question
In the given circuit, the voltmeter records 5 V. The resistance of the voltmeter (in ohms) is :
- 200
- 100
- 10
- 50
The correct answer is: 100
Related Questions to study
Chemistry-
The properties such as boiling point, freezing point and vapour pressure of a pure solvent change when solute molecules are added to get homogeneous solution. These are called colligative properties. Applications of colligative properties are very useful in day-to-day life. One of its examples is the use of ethylene gal/Col and water mixture as anti-freezing liquid in the radiator of automobiles.
A solution M is prepared by mixing ethanol and water. The mole fraction of ethanol in the mixture is 0:9:
Given: Freezing point depression constant of' water ( 
for water) 
Freezing point depression constant of ethanol 
for ethanol) 
Boiling point elevation constant of ethanol ( 
for ethanol) 
Standard freezing point of water = 273 K
Standard freezing point of ethanol: 155.7 K
Standard boiling point of water = 373 K
Standard boiling point of ethanol 351.5 K
Vapour pressure of pure water 32.8- mm Hg
Vapour pressure of pure ethanol = 40 mm Hg
Molecular weight of water = 18 g 
Molecular weight of ethanol = 46 g
In answering the following questions, consider the solutions to be ideal dilute solutions and solutes, to be non-volatile and non-dissociative.
Water is Added the solution M such that the mole fraction of water in the solution becomes 0.9 the boiling point of this solution is :
The properties such as boiling point, freezing point and vapour pressure of a pure solvent change when solute molecules are added to get homogeneous solution. These are called colligative properties. Applications of colligative properties are very useful in day-to-day life. One of its examples is the use of ethylene gal/Col and water mixture as anti-freezing liquid in the radiator of automobiles.
A solution M is prepared by mixing ethanol and water. The mole fraction of ethanol in the mixture is 0:9:
Given: Freezing point depression constant of' water ( for water)
Freezing point depression constant of ethanol for ethanol)
Boiling point elevation constant of ethanol ( for ethanol)
Standard freezing point of water = 273 K
Standard freezing point of ethanol: 155.7 K
Standard boiling point of water = 373 K
Standard boiling point of ethanol 351.5 K
Vapour pressure of pure water 32.8- mm Hg
Vapour pressure of pure ethanol = 40 mm Hg
Molecular weight of water = 18 g
Molecular weight of ethanol = 46 g
In answering the following questions, consider the solutions to be ideal dilute solutions and solutes, to be non-volatile and non-dissociative.
Water is Added the solution M such that the mole fraction of water in the solution becomes 0.9 the boiling point of this solution is :
Chemistry-General
Chemistry-
The solutions which boil at constant temperature like a pure liquid and possess same composition in liquid as well as vapour state are called azeotropes. The components of azeotropes cannot be separated by fractional distillation. Only non-ideal solutions form azeotropes. Solutions with negative deviation form maximum boiling azeotrope and the solutions with positive deviation form minimum boiling azeotrope. Boiling poin't of an azeotrope is never equal to the boiling points of any of the components of the azeotrope
The azeotropic mixture of water and HCI boils at 
. This solution is:
The solutions which boil at constant temperature like a pure liquid and possess same composition in liquid as well as vapour state are called azeotropes. The components of azeotropes cannot be separated by fractional distillation. Only non-ideal solutions form azeotropes. Solutions with negative deviation form maximum boiling azeotrope and the solutions with positive deviation form minimum boiling azeotrope. Boiling poin't of an azeotrope is never equal to the boiling points of any of the components of the azeotrope
The azeotropic mixture of water and HCI boils at . This solution is:
Chemistry-General
Chemistry-
Compartments 'A' and 'B' have the following combinations of solutions
The solution in which there will be no change in the level of the solution in the compartments' A' and 'B' is:
Compartments 'A' and 'B' have the following combinations of solutions
The solution in which there will be no change in the level of the solution in the compartments' A' and 'B' is:
Chemistry-General
Chemistry-
Compartments 'A' and 'B' have the following combinations of solutions
Indicate the solution(s)in which the compartment' B' will show the increase in volume:
Compartments 'A' and 'B' have the following combinations of solutions
Indicate the solution(s)in which the compartment' B' will show the increase in volume:
Chemistry-General
Chemistry-
Compartments 'A' and 'B' have the following combinations of solutions
Indicate the solution(s) in which the compartment' A' will show the increase in volume:
Compartments 'A' and 'B' have the following combinations of solutions
Indicate the solution(s) in which the compartment' A' will show the increase in volume:
Chemistry-General
Chemistry-
Compartments 'A' and 'B' have the following combinations of solutions
The solutions in which the compartment 'B' is hypertonic:
Compartments 'A' and 'B' have the following combinations of solutions
The solutions in which the compartment 'B' is hypertonic:
Chemistry-General
Chemistry-
Compartments 'A' and 'B' have the following combinations of solutions
Indicate the solutions which is/are isotonic:
Compartments 'A' and 'B' have the following combinations of solutions
Indicate the solutions which is/are isotonic:
Chemistry-General
Physics-
In the given circuit, no current is passing through the galvanometer. If the cross-sectional diameter of AB is doubled then for null point of galvanometer the value of AC would :
In the given circuit, no current is passing through the galvanometer. If the cross-sectional diameter of AB is doubled then for null point of galvanometer the value of AC would :
Physics-General
Physics-
Show in the figure below is a meter bridge set up with null deflection in the galvanometer. The value of the unknown resistor R is :
Show in the figure below is a meter bridge set up with null deflection in the galvanometer. The value of the unknown resistor R is :
Physics-General
Physics-
Find the value of current through 2 W resistance for the given circuit is :
Find the value of current through 2 W resistance for the given circuit is :
Physics-General
Chemistry-
A 1.24 M aqueous solution of 
has density ofl.15 g/
.What is the freezing point of the solution if the KI is completely dissociated in the solution?
A 1.24 M aqueous solution of has density ofl.15 g/.What is the freezing point of the solution if the KI is completely dissociated in the solution?
Chemistry-General
Chemistry-
Molarity and molality of a solution of caustic soda are respectively 11.12 M and 94.12 m. The density of the solution is:
Molarity and molality of a solution of caustic soda are respectively 11.12 M and 94.12 m. The density of the solution is:
Chemistry-General
Chemistry-
A solution is prepared by dissolving a 2.5 g sample of an unknown compound in 34 g of benzene 
boils at 1.3 SoC higher than pure benzene. Which expression gives the molar mass of the unknown compound?
A solution is prepared by dissolving a 2.5 g sample of an unknown compound in 34 g of benzene boils at 1.3 SoC higher than pure benzene. Which expression gives the molar mass of the unknown compound?
Chemistry-General
Chemistry-
When 1.2 g of sulphur is melted With 15g of naphthalene, the solution freezes at 
. What is the molar mass of tb is form of sulphur?
When 1.2 g of sulphur is melted With 15g of naphthalene, the solution freezes at . What is the molar mass of tb is form of sulphur?
Chemistry-General
Chemistry-
Y g of a non-volatile organic substance of molecular mass M is dissolved in 250 g benzene. Molal elevation constant of benzene is K b Elevation in its boiling point is given by:
Y g of a non-volatile organic substance of molecular mass M is dissolved in 250 g benzene. Molal elevation constant of benzene is K b Elevation in its boiling point is given by:
Chemistry-General
