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Recent questions tagged ch2

Which one of the following solutions will have the lowest freezing point?

asked Feb 13, 2014 by sreemathi.v

1 answer

When a substance is dissolved in a solvent,the vapour pressure of the solvent is decreased.This result in

asked Feb 13, 2014 by sreemathi.v

1 answer

Which of the following is the correct expression for van't Hoff factor?

asked Feb 13, 2014 by sreemathi.v

1 answer

When a solute is dissolved in a solvent,the elevation of boiling point of solution is

asked Feb 13, 2014 by sreemathi.v

1 answer

Which one of the following aqueous solution will exhibit abnormal osmotic pressure?

asked Feb 13, 2014 by sreemathi.v

1 answer

A 2% solution of non electrolyte X is isotonic with 1% of urea(mol.wt.60),the molecular weight of X is

asked Feb 13, 2014 by sreemathi.v

1 answer

A 0.3%(w/v) solution of urea (mol.wt.60) would be isotonic with

asked Feb 13, 2014 by sreemathi.v

1 answer

Which one of the following pair of solutions are expected to be isotonic at the same temperature?

asked Feb 13, 2014 by sreemathi.v

1 answer

Calculate osmotic pressure of a solutions having $0.1\; M\;NaCl$ and $0.2\; M\; Na_2SO_4$ and $0.5 M\; HA$. (Given: Weak acid is 20% dissociated at $300^{\circ}K$)

asked Feb 13, 2014 by sreemathi.v

1 answer

Osmotic pressure of a dilute solution is

asked Feb 13, 2014 by sreemathi.v

1 answer

Isotonic solutions have the same

asked Feb 13, 2014 by sreemathi.v

1 answer

Find the electric field caused by a disc of radius "a" with a uniform charge density $\;\sigma\;$ , at a point along the axis of the disc a distance x from its centre .

asked Feb 12, 2014 by yamini.v

1 answer

Which one of the following statement is incorrect about osmotic pressure?

asked Feb 12, 2014 by sreemathi.v

1 answer

Consider a spherical surface of radius 4m centred at the origin . Point +q and -2q are fixed at points $\;A (2m , 0 , 0)\;$ and $\;B (8m , 0 ,0)\;$ respectively . The potential on the surface of sphere is

asked Feb 12, 2014 by yamini.v

1 answer

Two liquids X and Y are separated by a semipermeable membrane and if liquid flows from X to Y,it indicates that

asked Feb 12, 2014 by sreemathi.v

1 answer

Osmotic pressure of a solution can be measured quickly and accurately by

asked Feb 12, 2014 by sreemathi.v

1 answer

Which one of the following completely dissociated salt solutions will give the lowering of vapour pressure double from its theoretical value?

asked Feb 12, 2014 by sreemathi.v

1 answer

The relative lowering of vapour pressure is equal to the molar fraction.This law is known as

asked Feb 12, 2014 by sreemathi.v

1 answer

Relative lowering of vapour pressure is directly proportional to

asked Feb 12, 2014 by sreemathi.v

1 answer

Which one of the following aqueous solution posses lowest vapour pressure?

asked Feb 12, 2014 by sreemathi.v

1 answer

A solid conducting sphere of radius a having a charge q is surrounded by a concentric conducting spherical shell of inner radius 2a and outer radius as shown in figure . Find the amount of heat produced when switch is closed

asked Feb 12, 2014 by yamini.v

1 answer

The colligative properties depend upon

asked Feb 12, 2014 by sreemathi.v

1 answer

Which one of the following is considered as colligative property?

asked Feb 12, 2014 by sreemathi.v

1 answer

How many moles of water are present in 90g of water?

asked Feb 12, 2014 by sreemathi.v

1 answer

Calculate the amount of ammonium sulphate required to prepare 500ml of 1 molar solution of ammonium sulphate? (m.wt of $(NH_4)_2SO_4$ is 132.14gm/mol)

asked Feb 12, 2014 by sreemathi.v

1 answer

If the molar mass of glucose is 180.2 g mol$^{-1}$ and if 36 gm of glucose $C_6H_{12}O_6$ is present in 1000 gm of an aqueous solution of glucose,it is said to be

asked Feb 12, 2014 by sreemathi.v

1 answer

One molal solution indicates

asked Feb 12, 2014 by sreemathi.v

1 answer

Solubility of a substance in a solvent depends upon

asked Feb 12, 2014 by sreemathi.v

1 answer

How much mass of urea $(NH_2CONH_2)$ is required in preparing 5 kg of 0.50 molal solution? (M.wt of urea=60g)

asked Feb 12, 2014 by sreemathi.v

1 answer

If 50ml of 0.5M $H_2SO_4$ is diluted to 1000 ml, what is the molarity of diluted solution?

asked Feb 12, 2014 by sreemathi.v

1 answer

What is the molarity of solution, if 60g of $Co(NO_3)_2.6H_2O$ dissolved in 4.3L of solution ?

asked Feb 12, 2014 by sreemathi.v

1 answer

What is the mole fraction of benzene in solution containing 20% by mass in $CCl_4$?

asked Feb 12, 2014 by sreemathi.v

1 answer

What is mass percentage of benzene $(C_6H_6)$ in carbon tetrachloride $(CCl_4)$ if 20g of benzene is dissolved in 180g of $CCl_4$?

asked Feb 12, 2014 by sreemathi.v

1 answer

A sample of $H_2SO_4$ solution is labeled 98% by weight. What is the normality of acid, given that the density of $H_2SO_4$ solution is 1.8g/ml.

asked Feb 12, 2014 by sreemathi.v

1 answer

A sample of $H_2SO_4$ solution is labeled 98% by weight. What is the molarity of acid, given that the density of $H_2SO_4$ solution is 1.8g/ml.

asked Feb 12, 2014 by sreemathi.v

1 answer

What is the mole fraction of water in 20% w/w ethylene glycol solution?

asked Feb 12, 2014 by sreemathi.v

1 answer

What is the mole fraction of ethylene glycol $(C_2H_6O_2)$ in a solution containing 20% ethylene glycol by mass?

asked Feb 12, 2014 by sreemathi.v

1 answer

Which of the following is an example of solid solution?

asked Feb 12, 2014 by sreemathi.v

1 answer

Which of the following is in an example of liquid solution?

asked Feb 12, 2014 by sreemathi.v

1 answer

Which of the following is an example of gaseous solution?

asked Feb 12, 2014 by sreemathi.v

1 answer

Figure shows two conducting thin concentric shells of radii r and 3r . The outer shell carries charge q . Inner shell is neutral . Find the charge that will flow from inner shell to outer after the switch S is closed .

asked Feb 12, 2014 by yamini.v

1 answer

An isolated conducting sphere whose radius $\;R=1 m \;$ has a charge $\;q=\large\frac{1}{9}\; \mu C\;$ .The energy density at the surface of the sphere is

asked Feb 11, 2014 by yamini.v

1 answer

The electrostatic potential due to the charge configuration at point P as shown in figure is $\;(b < < a)$

asked Feb 11, 2014 by yamini.v

1 answer

Two identical charges are placed at the two corners of an equilateral triangle . The potential energy of the system is $\;\sqcup\;.$ The work done in bringing an identical charge from infinity to the third vertex is

asked Feb 10, 2014 by yamini.v

1 answer

Three concentric spherical metallic shells A , B and C of radii a ,b and c $\;(c > b> a)\;$ have charge densities $\;\sigma , - \sigma \;and\; \sigma\;$ respectively . The potential of shell B is

asked Feb 10, 2014 by yamini.v

1 answer

Initially the spheres A and B are at potential $\;V_{A}\;$ and $\;V_{B}\;$ respectively . Now sphere B is earthed by closing the switch . The potential of A will now become

asked Feb 7, 2014 by yamini.v

1 answer

Find potential difference $\;V_{AB}\;$ between $\;A(0,0,0)$ and $\;B(1m ,1m, 0)\;$ in an electric field $\;\overrightarrow{E}=y \hat{i}+x \hat{j}$

asked Feb 7, 2014 by yamini.v

1 answer

There are four concentric shells A , B , C ,D of radii a , 2a ,3a and 4a respectively . Shells B and D are given charges +q and -q respectively . Shell C is now earthed . The potential difference $\;V_{A}-V_{C}\;$ is

asked Feb 7, 2014 by yamini.v

1 answer

If the electric potential of the inner shell is 10V and that of the outer shell is 5V , then the potential at the centre will be

asked Feb 7, 2014 by yamini.v

1 answer

Potential difference between centre and surface of the sphere of radius R and $\rho$ uniform volume charge density within it will be

asked Feb 7, 2014 by yamini.v

1 answer

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