0 to 2
0 to 5
4 to 2
4 to 5
4 to 10
Correct answer is B
No explanation has been provided for this answer.
Chlorine displaces bromine from aqueous potassium bromide because
bromine is a liquid at room temperature
bromine is weakly acidic.
bromine has a greater atomic radius than chlorine
chlorine is a stronger oxidising agent than bromine.
the density of chlorine is less than the density of bromine.
Correct answer is D
No explanation has been provided for this answer.
The pH of water is 7.
What is the pH of orange juice?
7
above 10
below 2
between 5.5 and 6.5
between 7.5 and 8.5
Correct answer is D
No explanation has been provided for this answer.
acquire certain colours
easier to melt
easier to mould
little brittle
more transparent
Correct answer is A
No explanation has been provided for this answer.
Which separation technique is routinely applied in the petroleum industry?
chromatography
distillation
evaporation
fractional crystallization
fractional distillation
Correct answer is E
No explanation has been provided for this answer.