Prove that density of the nucleus is constant.

3

(a)

What is meant by the term bond order? Calculate the bond order of : N₂, O_2, O_{2 ⁺,} \({ O }_{ 2 }^{ - }\)

3

(a)

Indicate the type of bonds present in NH₄No₃ and state the mode of hybridisation of two N-atoms in it.

3

(a)

A man takes a diet equivalent to 10000 kJ per day and does work, in expending his energy in all forms equivalent to 12500 kJ per day. What is change in internal energy per day?If the energy lost was stored as sucrose (1632 kJ pre 100g), how many days should it take to lose 2kg of his weight?(Ignore water loss)

3

(a)

What is the minimum volume of water required to dissolve 1g of calcium sulphate at 298 K? (For calcium sulphate, K_sp is 9.1 x 10^-6).

3

(a)

Describe the industrial applications of hydrogen dependent on the heat liberated when its atoms are made to combine on the surface of a metal.

3

(a)

Due to this property hydrogen is used for the manufacture of vanaspati ghee from edible oils such as cotton-seed oil, soyabean oil, corn oil etc.

3

(a)

A tetravalent element forms monoxide and dioxide withoxygen. When air is passed over heated element(1273 K), Producer gas is obtained. Monoxide of the element is powerful reducing agent and reduces ferric oxide to iron. Identify the element and write formulas of its monoxide and dioxide.
Write chemical equations for the formation of prodecur gas and reduction of ferric oxide with the monoxide.

3

(a)

An alkane has a molecule mass of 72. Give all the possible structural isomers along with their IUPAC names.

3

(a)