BUK Chemistry 2015/2016 Past Questions

Which of the following compounds is not a raw material for the manufacture of plastic?

Which of the following statement is not correct about esterification ?

The phenomenon observed when dust particles collide randomly in a beam of sunlight known as

The mass number of an atom of an element is sum of its

How many unpaired electrons are there in an atom of an element with the following electronic configuration 1S²2S²2P⁶

An increase in the pressure of a gas results in a decrease in its

Which of the following is a general method of preparing acid

The loss of molecules of water crystallization to the atmosphere by some crystalline salts is known as

Which of the following is a secondary alkanol?

Which of the following is the relative molecular mass of a compound which has emperical formula CH₂O (H=1, C=12, O=16)

Which of the following is used as water softener?

What is the percentage by weight of calcium in Ca(OCl)₂? (Ca=40, Cl=35.5, O=16)

Which of the following gases is lighter than air?

What is the value of -14°c on the kelvin temperature scale?

Lead and tins are the components of

Which of the following gases is colorless, odourless and soluble in potassium hydroxide

If a solution has a pH of 2, it can be concluded that it

A finely divided form of a metal burns more readily in air than the rod form because the rod has

In which of the following is the oxidation number of sulphur equal to -2?

How many orbitals are associated with the p-sub energy level

One of the characteristics of transition metals is

Which of the following is not used to detect radioactivity

The condensation of several amino acids molecules gives

What is the mass number of an element if its atom contains 10 protons, 10 electrons and 12 neutrons

Equilibrium is said to be attained in reversible reactions when