question The balanced chemical equation for the reaction between aluminum Al and hydrochloric acid HCl is

What is the general formula for alkanes?

A. CnH₂n
B. CnH2n+2
C. CnH2n-2
D. CnHn

What is the product of the reaction between potassium hydroxide (KOH) and acetic acid (CH₃COOH)?

A. Potassium acetate and water
B. Acetic acid and potassium hydroxide
C. Potassium acetate and acetic acid
D. Water and potassium hydroxide

The chemical reaction 2Na + Cl₂ → 2NaCl is an example of a:

A. Synthesis
B. Decomposition
C. Single displacement
D. Double displacement

Which of the following indicators is commonly used to test for the presence of acids and bases?

A. Litmus paper
B. Thermometer
C. Barometer
D. pH meter

The process by which cells convert light energy into chemical energy, producing glucose, is known as:

A. Photosynthesis
B. Glycolysis
C. Fermentation
D. Cellular respiration

What is the role of coenzyme Q10 (ubiquinone) in cellular respiration?

A. Electron carrier in the electron transport chain
B. Enzyme that catalyzes glycolysis
C. Precursor for DNA synthesis
D. Component of the citric acid cycle

Which process involves the synthesis of RNA using a DNA template?

A. Transcription
B. Translation
C. Replication
D. Reverse transcription

What is the balanced chemical equation for the reaction between methane (CH₄) and oxygen (O₂) in complete combustion?

A. CH₄ + 2O₂ → CO₂ + 2H₂O
B. CH₄ + O₂ → CO + H₂O
C. CH₄ + 2O₂ → CO + 2H₂O
D. CH₄ + O₂ → CO₂ + H₂O

Which of the following is a property of neutral solutions?

A. pH of 7
B. Red litmus turns blue
C. Releases H⁺ ions
D. Bitter taste

The pH of a solution with a hydroxide ion concentration of 1 x 10⁻¹¹ M is:

A. 3
B. 7
C. 11
D. 14

Chemistry MCQS - QUESTION DETAILS

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