A measured temperature on Fahrenheit scale is 200^o F. What will this reading be on Celsius scale?

3

(a)

The arrangement of orbitals on the basis of energy is based upon their (n + 1), lower is the energy. For orbitals having same values of (n + l), the orbitals with lower value of n will have lower energy.
Based upon the above information, arrange the following orbitals in the increasing order of energy.
a) 1s 2s, 3s, 2p
b) 4s, 3s, 3p, 4d
c) 5p, 4d, 5d, 4f, 6s
d) 5f, 6d, 7s, 6p

3

(a)

How does the metallic and non-metallic character vary on moving from left to right in a period?

3

(a)

Write the resonance structures for  NO₂

3

(a)

Calculate the total pressure in a mixture of 8 g of dioxygen and 4 g of dihydrogen confined in a vessel of 1 dm³ at 27\(^{o}\)C. (R = 0.083 bar dm³ K^-1 mol^-1)

3

(a)

Pressure versus volume graph for a real gas and an ideal gas are shown in figure. Answer the following questions on the basis of the graph.

Interpret the behaviour of real gas with respect to ideal gas at high pressure.

3

(a)

1.0 mole of a monoatomic ideal gas is expanded from state (1) to state (2) as shown in figure. Calculate the work done for the expansion of gas from state(1) to state (2) at 298 K.

3

(a)

The concentration of hydrogen ion in a sample of soft drink is 3.8 × 10^–3M. what is its pH ?

3

(a)

Explain why alkyl groups act as electron donors when attached to a π system.

3

(a)