2001 NECO SSCE Chemistry Past Questions

2001

Which compound will have the lowest boiling point?

2001

The Atomic theory model which explains that electrons in an atom revolve round quantized energy levels is attributed to

2001

White is NOT a property of metals?

2001

Which of the following is TRUE of a catalyst? I. it alters the activation energy of a reactionII. it is effective in a reaction but cannot initiate a reactionIII, it affects the equilibrium of a reversible reactionIV. it…

2001

A gas X diffuse through porous partition at the rate of 3 cm3 per second. Under the same condition hydrogen diffused at the rate of 15 cm3 per second.What is the 42. relative molecular mass of X.

2001

Faraday s first law of electrolysis can be expressed mathematically as

2001

An experiment to test the conductance of 0,1 M solutions of the substances listed below was perform.I ammoniaII ammonium chlorideIII ethanoic acidIV sodium ethanoateWhich pair of substances show the least conductance?

2001

The best way to distinguish between Na2CO3and NaHCO2 is by.

2001

The Kinetic theory can NOT be used to explain

2001

Which method is NOT used to determine rate of a reaction?

2001

Ethanol is a product of fermentation of simple sugars. Which method is used to separate ethanol from the other products?

2001

To test for the presence of chloride ions in ion, correct sequence of reagents to use is

2001

NaCl(s) does NOT conduct electricity, but N(aq) does. This is because

2001

The green colour solution of an Fe2 salt changes to a brown solution of an Fe3+ salt by

2001

if an element X with atomic number 13 combines with an element Y whose atomic number is 8 the most likely formula of the compound formed between X and Y is

2001

When an electric current is passed through a solution containing dilute tetraoxosulphate (Vi) acid, 190 cm3 of hydrogen gas is evolved. if the measurements were made at 26°C and 736 mmHg, what is the volume of hydrogen a…

2001

A measure of the degree of disorderliness in a chemical system is known as the

2001

Fructose and glucose are

2001

Detergents are better than soaps for washing in hard water because

2001

Which compound is a component of baking powder?

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