Blue
Red
Orange
Purple
Correct answer is D
Neutral litmus paper is purple. the result of a neutralization reaction is salt and water and hence is neutral.
In the extraction of iron, the waste gas from the furnace is a mixture of
PH3 CO and CO2
CO and C
N2 , CO and CO2
PH3 and CO
Correct answer is C
the \(N_2\) from the hot air blast to burn the coke (48%), the \(CO\) (23%) and \(CO_2\) (21%) produced from the reduction of the iron ore \(Fe_{2}O_{3}\) by carbon (the coke) are the major components of the waste from the extraction.
The drying agent suitable for drying ammonia is
Calcium Chloride
Calcium Oxide
Phosphorus(V) Oxide
Concentrated H2SO4
Correct answer is B
No explanation has been provided for this answer.
3
2
4
5
Correct answer is C
No explanation has been provided for this answer.
Ethanol is soluble in water due to the presence of a
Carbonyl group
Hydroxyl group
Phenyl group
Methyl group
Correct answer is B
No explanation has been provided for this answer.