The maximum number of electrons that can accommodated in the shell having the principal quantum number 3 is
A. 3
B. 9
C. 10
D. 18
E. 32
D
3.
Methanol is obtained from wood by
A. esterification
B. bacterial decomposition
C. combustion
D. fractional distillation
E. destructive distillation
E
4.
Study carefully the reaction represented by the equation below. 2H2O 2(l) → O 2(g) + 2H2O(l). Which of the following will not reaction increase the reaction rate?
A. Heating the hydrogen peroxide
B. Adding a pinch of MnO2 to the reactant
C. increasing the concentration of the H2O2
D. Adding water to the reactant
E. Exposing the reactant to sunlight
D
5.
Which of the following processes is a physical reaction?
A. Electrolysis
B. Hydrolysis
C. Allotropic change
D. Neutralization
E. Corrosion
C
6.
If the volume of a given mass of gas at 298 K and pressure of 205.2 x 10\(^3\) Nm\(^{-2}\) is 2.12dm\(^3\), what is volume of the gas at s.t.p? (Standard pressure = 101.3 x 10\(^3\) Nm\(^{-2}\), Standard temperature = 273K)