ASVAB – General Science – GS

The General Science (GS) sub-test is common to both the CAT ASVAB and the pencil and paper version of the examination. It is designed to evaluate your high school knowledge of Science.


  • Students appearing for the computerized version of the ASVAB have to solve 16 General Science (GS) questions in 8 minutes.
  • A point to remember here is that for the CAT ASVAB, the difficulty level of the questions will increase, based on the answers that you have provided.
  • Although, the difficulty level of the questions will not change in the pencil and paper version, yet the number of questions that you will have to solve here will be more than the CAT ASVAB.
  • Candidates taking the pencil and paper version will have to solve 25 General Science (GS) questions in 11 minutes.

ExamFocus’ Practice Support

The information mentioned above provides an insight into the nature of the sub-test. However, if you want to ace the examination, you must know the topics covered under the General Science (GS) sub-test. Ensure that you have practiced this section well before you decide to take the test. A perfect score can be achieved only if you practice and prepare well. Use ExamFocus’ sample practice questions to get your skills sharpened.

Testing & Scoring Scheme

  • The General Science (GS) sub-test of the ASVAB covers the subjects of Earth Science, Biology, Chemistry and Physics.
  • The score you receive for the General Science (GS) sub-test is reported separately as a Standard Score.
  • Moreover, this score is also taken into account while calculating your percentile rank.

In the General Science test of the ASVAB, you will find 16 questions, if you take the computer based version, and the total time within which you need to complete these questions is 8 minutes. If you will take the pen and paper version, then you will find 25 questions that you will need to answer in 11 minutes.

Question Modeling & Syllabi Brief

The following are the four concepts from which you shall have to face questions in this sub-test:

  • Earth science: Here you will come across questions on the Earth’s atmosphere, laws governing movement of Earth, questions on Geology and tidal movements.
  • Biology: Under this topic, you will have to answer questions on basic Biology like cellular structure, classification of the plant and animal kingdom, ecology, bio-diversity etc. Other than that, a large number of these questions will be based on human physiology, like the working of the digestive, respiratory, muscular and other similar systems.
  • Chemistry: These questions will cover basic concepts of high school Chemistry, like periodic table, mixtures, compounds, equations, organic Chemistry etc.
  • Physics: The questions on Physics will verify your basic concepts like Newton’s laws, heat, magnetism, optics etc.

How to Improve Your Skills

The best method of preparing for the General Science (GS) sub-test is to practice and revise all that you have studied under Science in high school. Practice alone will increase your efficiency level, because one of the aims of this sub-test is to examine how well you perform in a stressful scenario.ExamFocus brings to you hundreds of General Science (GS)practice questions that are designed to cover all the topics concerning ASVAB to help you increase your skills. On clicking the following five links, you shall go to the page that offers hundreds of sample questions for your practice.

General Science – Biology Practice Tests

General Science – Chemistry Practice Tests

General Science – Physics Practice Tests