Free NSAA Chemistry Questions and Answers

Question 1

Which of the following elements has the highest electronegativity?

Accepted Answer

Fluorine

Answer

Fluorine has the highest electronegativity of all elements, meaning it has a strong ability to attract electrons in a chemical bond.

Question 2

What is the molecular geometry of methane (CH₄)?

Accepted Answer

Tetrahedral

Answer

Methane (CH₄) has a tetrahedral molecular geometry, with four hydrogen atoms symmetrically distributed around the central carbon atom.

Question 3

Which of the following compounds is ionic?

Accepted Answer

NaCl

Answer

Sodium chloride (NaCl) is an ionic compound, consisting of positively charged sodium ions and negatively charged chloride ions.

Question 4

What type of reaction is represented by the following equation: 2H₂ + O₂ → 2H₂O?

Accepted Answer

Synthesis

Answer

The given equation represents a synthesis reaction, where two or more reactants combine to form a single product.

Question 5

Which of the following statements about catalysts is true?

Accepted Answer

Catalysts speed up the reaction without being consumed.

Answer

Catalysts increase the rate of a reaction by lowering the activation energy and are not consumed during the reaction.

NSAA (Natural Sciences Admissions Assessment) Practice Test