TEAS Test of Essential Academic Skills TEAS-SECTION-2 Questions & Answers

• Question 21:

  What happens when a piece of zinc is placed in a copper(II) sulphate solution?

  A. Zinc displaces copper from copper(II) sulphate solution. The original blue color of the solution persists.

  B. Sulphur dioxide is liberated.

  C. Zinc displaces copper from copper(II) sulphate solution.

  D. No reaction occurs because zinc is less reactive metal than copper.

  Correct Answer: C

• Question 22:

  Which of these statements is correct?

  A. An oxidizing agent removes oxygen or electrons from other substances.

  B. A reducing reagent either adds oxygen to, or removes electrons from, another substance.

  C. An oxidizing agent either adds oxygen to, or removes electrons from, other substances.

  D. A reducing agent removes oxygen from, or removes electrons to, another substance.

  Correct Answer: C

• Question 23:

  The law of conservation of mass states that __________.

  A. The total mass of all products of a chemical reaction is independent of the total mass of all the reactants. They are not related.

  B. The total mass of all products of a chemical reaction is equal to the total mass of all the reactants.

  C. The total mass of all products of a chemical reaction is more than the total mass of all the reactants.

  D. The total mass of all products of a chemical reaction is less than the total mass of all the reactants, because some mass coverts to energy during reaction.

  Correct Answer: B

• Question 24:

  Which of these patterns of the periodic table is not correct?

  A. In metallic groups, reactivity increases down a group.

  B. Atomic size increases down a group and across a period (from left to right).

  C. In non-metallic groups, reactivity decreases down a group.

  D. Densities and melting points increase down any group.

  Correct Answer: B

• Question 25:

  Simple covalent compounds show which of the following properties?

  A. They are soluble in organic solvents e.g. ethanol.

  B. They conduct electricity when molten or dissolved in water.

  C. They are crystalline solids at room temperature.

  D. They have high melting and boiling points.

  Correct Answer: A

• Question 26:

  Which of these statements regarding isotopes is not true?

  A. Isotopes of an element have the same chemical and physical properties.

  B. Isotopes are atoms of the same element with different mass numbers.

  C. Isotopes have the same number of protons and electrons in each atom, but a different number of neutrons in their nucleus.

  D. Radio-isotopes are isotopes with unstable nuclei that emit radiations.

  Correct Answer: A

• Question 27:

  Which of these statements is true for boiling, but not true for evaporation?

  A. Gas forms at the surface of the liquid.

  B. The warmer the liquid is, the faster the process.

  C. It takes place at a specific temperature.

  D. The larger the surface area of liquid, the faster the process.

  Correct Answer: C

• Question 28:

  How does an impurity affect the melting point and boiling point of a substance?

  A. Impurity lowers the boiling point and lowers the melting point.

  B. Impurity lowers the boiling point and raises the melting point.

  C. Impurity raises the boiling point and lowers the melting point.

  D. Impurity raises the boiling point and raises the melting point.

  Correct Answer: C

• Question 29:

  Which pyrimidine base is only found in RNA?

  A. adenine

  B. uracil

  C. cytosine

  D. guanine

  Correct Answer: B

• Question 30:

  Spinal muscular atrophy (SMA) is an autosomal recessive disorder.

  Knowing this information, what are the chances that a child will not have the recessive allele if both of his parents are carriers?

  A. 100%

  B. 0%

  C. 50%

  D. 25%

  Correct Answer: D