Free CLEP Science and Mathematics Exam Braindumps
CLEP Science and Mathematics: Biology, Calculus, Chemistry, College Algebra & Mathematics, Precalculus, Natural Sciences Questions 126–130 (page: 27)

Updated On: 10-Feb-2026

What is the geometry of SF6?

  1. Linear
  2. Tetrahedral
  3. Octahedral
  4. Trigonal-pyramidal
  5. Trigonal-bipyramidal

Answer(s): C

Explanation:

Octahedral complexes form when there are six ligands.



What type of reaction is HCl(aq) - NaOH(aq) ?

  1. Acid-base reaction
  2. Nuclear reaction
  3. Combustion reaction
  4. Precipitation reaction
  5. No reaction

Answer(s): A

Explanation:

HCl acts as an acid and NaOH acts as a base to produce NaCl(aq) and H2O.



What type of reaction is CH3CH2OH + O2 ?

  1. Acid-base reaction
  2. Nuclear reaction
  3. Combustion reaction
  4. Precipitation reaction
  5. No reaction

Answer(s): C

Explanation:

A hydrocarbon burning in oxygen is a combustion reaction. The products are always CO2 and H2O.



What type of reaction is 6Li + 2H ?

  1. Acid-base reaction
  2. Nuclear reaction
  3. Combustion reaction
  4. Precipitation reaction
  5. No reaction

Answer(s): B

Explanation:

I he products are two alpha-particles (2He2). This is the initial fusion reaction that occurs in a hydrogen bomb.



What type of reaction is Pb(NO3)2(aq) + 2NaI(aq) ?

  1. Acid-base reaction
  2. Nuclear reaction
  3. Combustion reaction
  4. Precipitation reaction
  5. No reaction

Answer(s): D

Explanation:

The products are PbI2(s) + 2NaNO3(aq). Because PbI2 precipitates from solution, this is a precipitation reaction.



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