March 2008 - Plus 2 Chemistry - One Mark Questions - Part2

8) Entropy ( S) and the entropy change ( ∆S ) of a process

a) are path functions
b) are state functions
c) are constants
d) have no values

9) Which one of the following has negative value for ∆ng ?

a) H₂ (g)+I₂ (g) ⇌ 2HI(g)
b) PCl₅ (g) ⇌ PCl₃(g)+Cl₂(g)
c) 3H₂(g)+N₂(.g)⇌2NH₃(g)
d) 2H₂0(g )+ 2Cl₂(g)⇌4HCl(g) + O₂(g).

10) State of a chemical equilibrium

a) dynamic
b) stationary
c) both (a) and (b)
d) none of these

11) Hybridisation in SF₆ molecule is

a) sp³
b) sp³d²
c) sp³d
d) sp³d³

12) In a molecule eight electrons are present in bonding molecular orbital and four electrons are present in anti-bonding molecular orbital. Its bond order is

a) 3
b) 4
c) 2.5
d) 2

13) The metal having maximum electron afftnity is

a) sodium
b) calcium
c) gold
d) silver

14) Which of the following has the property of etching on glass?

a) HI
b) HF
c) HBr
d) HCl

Mark your answers. Proceed to Next Page after completing this part.