Chemistry

When an element can exist in two or more forms in the same physical state, the element is said to exhibit?

A. isotopy B. isomerism C. allotropy D. hygroscopy E. sublimation Correct Answer: Option C - allotropy

5 years ago

Which of the following gases will bleach moist litmus paper?

A. CI2 B. CO2 C. SO2 D. HCI2 E. N2O Correct Answer: Option A - CI2

5 years ago

How many carbon atoms are there in a benzene ring?

A. 4 B. 5 C. 6 D. 7 E. 8 Correct Answer: Option C - 6

5 years ago

The following are miscible with water except?

A. ethylethanoate B. methanol C. ethanoic acid D. methanoic acid E. ethanol Correct Answer: Option A - ethylethanoate

5 years ago

Which of the following hydrocarbons is not likely to be present in petrol?

A. C14H30 B. C10H22 C. C9H20 D. C7H16 E. C5H12 Correct Answer: Option A - C14H30

5 years ago

The most suitable method to use when separating an insoluble solid from a liquid is?

A. evaporation B. filtration C. magnetization D. sublimation E. distillation Correct Answer: Option B - filtration

5 years ago

The earthly impurities in iron ore are removed in the blast furnace by the reaction?

A. CO2 + C →2CO B. Fe2O3 + 3CO →2Fe + 3CO2 C. SiO2 + CaO →CaSiO3 D. CaCO3 →…

5 years ago

Which of the following statements best explains cracking? It is a process

A. in which an alkene adds on itself repeatedly to form long-chain polymers B. in which large hydrocarbon molecules are…

5 years ago