SS3 second Term chemistry past questions and answers

SS3 second Term chemistry past questions and answers

SS3 chemistry questions with options and answers:

Question: Which element is essential for the process of photosynthesis?

A) Carbon

B) Oxygen

C) Nitrogen

D) Chlorine

Answer: A) Carbon

Question: What is the chemical symbol for potassium?

A) K

B) P

C) Ko

D) Ka

Answer: A) K

Question: In the periodic table, elements in the same group have similar:

A) Atomic numbers

B) Atomic masses

C) Electronegativities

D) Valence electron configurations

Answer: D) Valence electron configurations

Question: The chemical formula for ammonia is:

A) NH4

B) N2H4

C) NH3

D) H3N

Answer: C) NH3

Question: What is the product of the reaction between hydrochloric acid (HCl) and sodium hydroxide (NaOH)?

A) Sodium chloride (NaCl) and water (H2O)

B) Hydrogen gas (H2) and oxygen gas (O2)

C) Carbon dioxide (CO2) and water (H2O)

D) Nitrogen gas (N2) and water (H2O)

Answer: A) Sodium chloride (NaCl) and water (H2O)

Question: Which of the following is a transition metal?

A) Aluminum (Al)

B) Iron (Fe)

C) Calcium (Ca)

D) Sodium (Na)

Answer: B) Iron (Fe)

Question: What is the chemical formula for glucose?

A) C6H12O6

B) CH3COOH

C) H2O2

D) CO2

Answer: A) C6H12O6

Question: The conversion of a solid directly to a gas is called:

A) Melting

B) Sublimation

C) Condensation

D) Freezing

Answer: B) Sublimation

Question: Which gas is responsible for the characteristic odor of rotten eggs?

A) Methane (CH4)

B) Hydrogen sulfide (H2S)

C) Carbon monoxide (CO)

D) Nitrous oxide (N2O)

Answer: B) Hydrogen sulfide (H2S)

Question: What is the chemical symbol for lead?

A) Ld

B) Le

C) Pb

D) Pt

Answer: C) Pb

Question: The substance that speeds up a chemical reaction without being consumed in the process is called:

A) Catalyst

B) Reactant

C) Product

D) Inhibitor

Answer: A) Catalyst

Question: Which of the following is an alkali metal?

A) Sodium (Na)

B) Calcium (Ca)

C) Chlorine (Cl)

D) Sulfur (S)

Answer: A) Sodium (Na)

Question: What is the chemical formula for carbon dioxide?

A) CO

B) CO2

C) C2O

D) C2O2

Answer: B) CO2

Question: What is the pH of a neutral solution?

A) 7

B) 1

C) 14

D) 0

Answer: A) 7

Question: The electron configuration of an atom is a representation of the distribution of its:

A) Neutrons

B) Electrons

C) Protons

D) Nucleons

Answer: B) Electrons

Question: Which type of bond is formed by the sharing of electrons between atoms?

A) Ionic bond

B) Covalent bond

C) Metallic bond

D) Polar bond

Answer: B) Covalent bond

Question: What is the chemical symbol for helium?

A) He

B) Hl

C) Hy

D) Ha

Answer: A) He

Question: Which of the following is an example of a base?

A) Hydrochloric acid (HCl)

B) Sodium hydroxide (NaOH)

C) Nitric acid (HNO3)

D) Sulfuric acid (H2SO4)

Answer: B) Sodium hydroxide (NaOH)

Question: The process of converting a liquid into a gas is called:

A) Evaporation

B) Condensation

C) Sublimation

D) Freezing

Answer: A) Evaporation

Question: What is the chemical formula for acetic acid, found in vinegar?

A) CH4

B) H2O

C) C2H4O2

D) CO2

Answer: C) C2H4O2