Chemicals that are produced in small quantities and with very high degree of purity are
bulk chemicals
fine chemicals
heavy chemicals
light chemicals
Correct answer is B
No explanation has been provided for this answer.
Which of the following substances causes the depletion of the ozone layer in the atmosphere?
Carbon (IV) oxide
Chlorofluorocarbon
Sulphur (IV) oxide
Hydrocarbons
Correct answer is B
No explanation has been provided for this answer.
CO2- 3
NO- 3
SO2- 4
SO2- 3
Correct answer is C
No explanation has been provided for this answer.
A hydrocarbon containing 88.9% carbon has the empirical formula [H = 1 C = 12]
CH
CH2
C2H3
C2H5
Correct answer is B
No explanation has been provided for this answer.
I < II < IV < III
IV < III < II < I
I < II < III < IV
IV < I < II< III
Correct answer is D
| Ethanol | 78°C |
| Propanol | 97°C |
| Butanol | 118°C |
| Pentane | 36.1°C |
Hence, the arrangement is IV, I, II, III.