Learn more about the properties, composition, and structure of substances (elements and compounds) with these Chemistry questions and answers. This Test can be used by students preparing for Chemistry in JAMB, WAEC, NECO or Post UTME.
The gas used in the manufacture of vanaspati from vegetable oil is
hydrogen
oxygen
nitrogen
carbon dioxide
Correct answer is A
No explanation has been provided for this answer.
The inexpensive and commonly used variety of glass is called soda glass. It is called so because
was used initially for making bottles of soda(carbonated drink)
is made using soda(sodium carbonate)
was initially used for storing sodium carbonate
is made using soda lime
Correct answer is B
No explanation has been provided for this answer.
The mass number of a nucleus is
always less than its atomic number
the sum of the number of protons and neutrons present in the nucleus
always more than the atomic weight
a fraction
Correct answer is B
No explanation has been provided for this answer.
The material which can be deformed permanently by heat and pressure is called a
thermoplastic
thermoset
chemical compound
polymer
Correct answer is B
No explanation has been provided for this answer.
The items amenable to detection by soft x-rays are
contrabands
lead in bullets
narcotics
genuine coins from counterfeit coins
Correct answer is D
No explanation has been provided for this answer.