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Chemistry Quiz
Chemistry · Hard
16 questions · Unlimited attempts · Free online practice
Chemistry is the science that explains what everything around us is made of and how substances change. From the air we breathe and the water we drink to medicines, food, and modern...
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All 16 questions in this Chemistry quiz
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What is acceleration due to gravity (m/s^2)?
- A. 9.8
- B. 10
- C. 8.9
- D. 9.2
-
Which gas is evolved during the action of acid on metals?
- A. Hydrogen
- B. CO2
- C. Nitrogen
- D. Oxygen
-
Which analytical technique is used to measure the mass-to-charge ratio of ions to identify the molecular weight and structure of a sample?
- A. NMR Spectroscopy
- B. Infrared Spectroscopy
- C. Mass Spectrometry
- D. UV-Vis Spectroscopy
-
What is the name for the random, erratic motion of microscopic particles suspended in a fluid, which provided experimental proof of the existence of atoms?
- A. Brownian Motion
- B. Quantum Fluctuations
- C. Osmosis
- D. Capillary Action
-
Which element is known as the 'King of Chemicals'?
- A. Oxygen
- B. Sulfuric Acid
- C. Hydrogen
- D. Nitrogen
-
What is the pH level of acid rain usually?
- A. Below 5.6
- B. Above 7
- C. Exactly 14
- D. Exactly 7
-
In an electrochemical cell, at which electrode does 'oxidation' (the loss of electrons) always occur?
- A. Cathode
- B. Anode
- C. Salt Bridge
- D. Electrolyte
-
What is the term for the specific temperature and pressure at which the solid, liquid, and gaseous phases of a substance coexist in equilibrium?
- A. Critical Point
- B. Boiling Point
- C. Triple Point
- D. Sublimation Point
-
What is the strongest type of intermolecular force, responsible for water's high boiling point compared to other similar molecules?
- A. London Dispersion Forces
- B. Dipole-Dipole Interactions
- C. Hydrogen Bonding
- D. Ion-Dipole Forces
-
What is the chemical name for Vitriol?
- A. Copper Sulfate
- B. Sulfuric Acid
- C. Zinc Sulfate
- D. Iron Sulfate
-
Which gas is released during volcanic eruptions mostly?
- A. Water vapor
- B. Oxygen
- C. Methane
- D. Argon
-
What are compounds that have the same molecular formula but different structural arrangements of atoms?
- A. Isotopes
- B. Allotropes
- C. Isomers
- D. Isobars
-
What is the process of cell division for reproduction called?
- A. Budding
- B. Fission
- C. Meiosis
- D. Mitosis
-
What thermodynamic property measures the total heat content of a system at constant pressure?
- A. Entropy
- B. Gibbs Free Energy
- C. Enthalpy
- D. Internal Energy
-
What is the name of a solution that resists changes in pH when small amounts of an acid or a base are added?
- A. Saturated Solution
- B. Buffer Solution
- C. Colloidal Solution
- D. Supercritical Fluid
-
What is Avogadro number?
- A. 6.02-10
- B. 6.02-10
- C. 6.02-10
- D. 6.02-10