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Aptitude Test Topic: Chemistry

Chemistry test evaluate test taker's in-depth understanding of the subject.

Directions

The following are questions of Chemistry. Select the correct option to represent your answer.

To give the answer click/tap the option alphabet for your answer choice. for correct answer green check and for wrong answer a red cross will appear along with a button to show explanation with or without video of the question answer.

Chemistry: All Topics Practice MCQ

Question Statement:

Which one has zero octane number?

iso – octane

n – Hexane

n – Heptane

decane

Explanation:

Correct Answer: C

n-Heptane is the zero point of the octane rating scale. It is undesirable in petrol, because it burns explosively, causing engine knocking, as opposed to branched-chain octane isomers, which burn more slowly and give better performance. It was chosen as the zero point of the scale because of the availability of very high purity n-heptane, unmixed with other isomers of heptane or other alkanes

Question: 1 Test: 4 of 15 Next Test

Tests

You are taking Aptitude Test No. 4

Each aptitude test is comprised of 10 except the last test which might have fewer than 10 in some topics.

You are at question (MCQ) number 1 and Test Number 4 of Chemistry: All topics. To deal with Chemistry questions, you must take lesson on the subject. In case of science and Art subjects revise your text books and in case of general aptitude topics take lessons from the topic page.

The question: Which one has zero octane number? .... with options: iso – octane , n – Hexane , n – Heptane , decane can be solved with the concepts and understanding of Chemistry.