Comparison of Physisorption and Chemisorption

Q. Is nitrogen gas a compound or a element?

Q. Why is +M effect of -OH greater than that of -OR?

Q.

Which statement is/are correct?

i) Physical adsorption is due to Vander Waal's forces

ii) Physical adsorption decreases at high temperature

iii) Physical adsorption is irreversible

iv) Enthalpy for a chemical adsorption is generally lesser than that of physical adsorption

1. i, ii &iv

2. i, ii & iii

3. i, ii

4. i&iv

Q. Degree of unsaturation in valium?

Q. 62. What is the Percentage of nitrogen in HNO3?

Q. what is the amount of o2 liberated at stp by 30 volume 1 l solution of h2o2

Q. A : One mole of an ideal gas at STP has volume 22.4 m3. R : If symbols have usual meanings then equation of ideal gas is PT = VR. Options: If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1) If both Assertion & Reason are true but the reason is not the correct explanation of the assertion, then mark (2) Wrong If Assertion is true statement but Reason is false, then mark (3) Should have chosen If both Assertion and Reason are false statements, then mark (4)

Q. 49.Why nitrogen nitrogen bond length is small?

Q.

Which of the following are correct about physisorption?

1) Decrease in entropy of system
2) Decrease in enthalpy
3) The value of TdS is positive
4) It is reversible in nature

1. 1, 2 & 3

2. 2, 3 & 4

3. 1, 2 & 3

4. 1, 2 & 4

Q. If three moles of nitrogen reacts with ten moles of hydrogen , then how many moles of ammonia will form?

Q. 6.EA order of nitrogen family??

Q. The phenomenon of adsorption find its application in

Q. A : One mole of an ideal gas at STP has volume 22.4 m3. R : If symbols have usual meanings then equation of ideal gas is PT = VR. Options: If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1) If both Assertion & Reason are true but the reason is not the correct explanation of the assertion, then mark (2) Wrong If Assertion is true statement but Reason is false, then mark (3) Should have chosen If both Assertion and Reason are false statements, then mark (4)

Q. Which of the following characteristics is/are correct for physical adsorption?

1. Adsorption is spontaneous
2. Both enthalpy and entropy of adsorption are negative
3. Adsorption increases with increase in temperature
4. Adsorption on solids is reversible