FUNAAB Chemistry 2016/2017 Past Questions

₁²H + ₁³H --> ₂⁴He + X + Energy.
Energy the particle X in the fusion reaction above is

In a fission of uranium isotope, a mass defect of 0.25 a.m.u. is observed. Calculate the binding energy of the isotope. [1 a.m.u = 931MeV, 1eV = 1.6 X 10^-19 J]

An atomic nucleus consists of protons and neutrons. The energy equivalent of the mass difference between a nucleus and its constituents is the

Electrons are more diffracted than protons under the same conditions owing to their

What type of impure atom must be added to a pure semiconductor in order to obtain an n-type semiconductor?

In bipolar transistors, conduction is by

In a power supply circuit, the component that acts as a rectifier is the

The volume of 0.1 moldm^-3 hydrochloric acid needed to neutralize 20.0cm³ of 0.2 moldm^-3 sodium hydroxide solution is

The criterion for a reversible process is

The melting of ice at room temperature is

In the preparation of dry oxygen, the product is collected over mercury and not by displacement of air because oxygen

Which of the following processes is used in the extraction of a less electropositive metal?

When sulphur (IV) oxide gas is bubbled into iron (III) chloride solution, the colour changes from

Aluminium is a good roofing material because it

Which of the allotropes of tin exists at room temperature?

The gas responsible for most fatal explosions in coal mines is

The reaction of sodium peroxide with ice cold water can be represented by

Ammonia is highly soluble in water because it is

A gas with an irritating smell which also turns moist blue litmus paper red and then bleaches it is

Hydrogen is used for filling balloons because it

3Fe(s) + 4H₂O(g) --> Fe₃O₄(s) + 4H₂(g) /n In the reaction above, the forward reaction approaches completion with

Which of the following represents ethylethanoate?

On exposure to air, the sour taste developed by the alcoholic drinks due to the formation of

of the following carbohydrates can be found in mammalian milk?

Calculate the molar mass in g mol^-1 of an alkyne represented by C_nH₁₆

Which of the following is a naturally occurring giant molecule?

The major product obtained from the alkaline hydrolysis of bromoethane is

An organic acid that can be decarboxylated to benzene when strongly heated with soda lime is