Jamb 2014 Flashcards
Beryllium and aluminium have similar properties because they
Are positioned diagonally to each other
The radio active radiation used in studying the arrangement of particles in giant organic molecules is
X - ray
When is the bond ionic and non polar covalent?
When change in E > 2.0
When the change in E < 0.5
The dispersion of a liquid in a liquid medium will give
An emulsion
The basicity of CH3COOH is
1
The colour of litmus in a neutral medium is
Purple
Which of the following salts will turn blue litmus red?
A. Sodium tetrahydroxozincate (ll)
B. Sodium hydrogentetraoxosulphate (VI)
C. Sodium trioxocarbonate (lV)
D. Zinc chloride hydroxide
B
In the electrolytic extraction of calcium from calcium chloride, the cathode is
Iron
A compound that gives a brick-red colour to a non-luminous flame is likely to contain
Calcium
A few drops of NaOH solution was added to an unknown salt forming a white precipitate which is insoluble in excess solution. The cation likely present is
Ca2+
The alkanol obtained from the production of soap is
Glycerol
Ethyne is passed through a hot tube containing organo-nickel catalyst to produce
Benzene
Due to the unstable nature of ethyne, it is stored by dissolving in
Propanone
The polymer used in making car rear lights is
Perspex
CH3COOC2H5(1) + H2O(1) ⇌ CH 3COOH (aq) + C 2H 5OH (aq)
The purpose of H+ in the reaction above is to
Increase the yield of the product
