Osmotic Pressure and Osmotic Potential

Q. Decinormal sokution of NaCl developed an osmotic pressure of 4.6 atm at 300 K.Calculate its degree of dissociation(R=0.082 atm/K/mol.

Q. Osmotic pressure of a solution is

1. more than that of a pure solvent
2. equal to that of pure solvent
3. less than that of a pure solvent
4. variable depending upon concentration

Q. Osmotic pressure depends upon

1. concentration of solutes
2. ionization
3. temperature
4. all of these

Q.

What is osmotic pressure? Name the experiment which can demonstrate it.

Q.

Briefly describe water potential. What are the factors affecting it?

Q. Henrys law constant for co2 in water is 1.67*108 pa at 298k. Calculate quantity of co2 in 500ml of soda water when packed under 2.5atm co2 pressure at 298k.

Q. Which of the following structures contribute to the production of seminal plasma?

1. Seminal vesicle, uterus, prostate gland
2. Seminal vesicle and scrotum
3. Bulbourethral glands, seminal vesicle, prostate gland
4. Bulbourethral glands, scrotum, prostate gland

Q.

Which of the following has highest water potential?

1. 1 M sugar solution

2. 1 M sugar solution with 2-3 bar pressure

3. 1 M salt solution

4. Distilled water

Q. The osmotic potential and pressure potential of three cells (A, B, C) located in different parts of an actively transpiring plant are given below:

Cell	Osmotic Potential (MPa)	Pressure Potential (MPa)
A	– 0.87	0.44
B	– 0.92	0.34
C	– 0.68	0.27

Identify these three cells as root hair, root cortical and leaf mesophyll cells respectively. The correct answer is.

1. B, C, A
2. C, A, B
3. A, C, B
4. A, B, C

Q. Which one of the below statements is incorrect regarding the prostate gland?

1. It secretes milky alkaline fluid (pH = 7.5)
2. Its secretion contains citric acid
3. Its secretion has antimicrobial property
4. It contributes to the volume of seminal plasma

Q. Semen exits the human body through _______.

1. anus
2. cloaca
3. urethral meatus
4. None of these

Q. Vapour pressure of pure benzene and toluene at 313K is 150 and 50 mmHg respectively. Calculate the vapour pressure of the mixture containing equal masses of benzene and toluene at 313K.

Q. Osmotic potential of pure water under standard pressure and temperature is

1. one
2. zero
3. less than zero
4. between zero and one

Q.

What in plant cells contributes to the solute potential?

Q.

What happens to the solute potential if solutes are more?

Q.

Turgidity of the cell is maintained by:

1. Wall pressure

2. Turgor pressure

3. Osmotic pressure

4. Diffusion pressure

Q.

What is the meaning of 10 mmole per kg?

Q. Calculate osmotic pressure of desinormal bacl2 at 300 k temp if degree of dissociation is 60%??

Q.

If a cell A with DPD = 5 bars is connected to cells B, C and D, whose OP and TP are respectively 5bars and 5 bars, 10 bars and 4 bars, and 8 bars and 3 bars, the flow of water will be from _______.

1. C to A, B and D

2. A and D to B and C

3. A to B, C and D

4. B to A, C and D.

Q. Which of the following statements is wrong?

1. Water potential equals solute potential in a fully turgid cell
2. Solute potential is always negative
3. Pressure potential is zero in a flaccid cell
4. Solute potential equals pressure potential in a fully turgid cell.

Q. 'A' and 'B' are two adjacent living cells. The cell 'A' has solute potential $\left({\Psi }_s\right)$ of
-9 bars and pressure potential $\left({\Psi }_p\right)$ of 4 bars, whereas cell 'B' has solute potential $\left({\Psi }_s\right)$ of
-8 bars and pressure potential $\left({\Psi }_p\right)$ of 5 bars. What will be the direction of water movement between these cells?

1. Cell A to Cell B
2. Moves in both the directions.
3. Cell B to Cell A
4. Do not move in any direction.

Q. Assertion :Plasma membrane is selectively permeable. Reason: It allows some solutes to pass through it readily along with solvents.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.
3. Assertion is correct but Reason is incorrect.
4. Both Assertion and Reason are incorrect.

Q.

What happens when there is an increase in the turgor pressure in cells?

Q. Which of the following elements is responsible for maintaining turgor in cells ?

Q.

What is the leading cause of turgor pressure?

Q. Osmotic potential of pure water under standard pressure and temperature is

1. one
2. less than zero
3. between zero and one
4. zero

Q.

E.coli and $T_2$ bacteriophage have ______(i)___________ and _____________(ii)____ type of genetic material respectively.

1. circular ds DNA, circular ss DNA
2. circular ds DNA, linear ds DNA
3. circular ss DNA, linear ds DNA
4. linear ss DNA, circular ds DNA

Q.

The solution that exerts highest osmotic pressure is________.

Q.

What is the effect of turgor pressure in Munch hypothesis?

1. Decrease of turgor pressure

2. Independent to water potential gradient

3. Increase of turgor pressure

4. No change in turgor pressure

Q.

What is the water potential for distilled water?