Updated 2023 HiSET ETS Certification Exam Pdf Dumps Questions and Answers

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2. Latest Version: 6.0 Question: 1 What is the name of the state in which forward and reverse chemical reactions are occurring at the same rate? A.Equilibrium B.Constancy C.Stability D.Toxicity Answer: A Explanation: When forward and reverse chemical reactions are taking place at the same rate, a chemical reaction has achieved equilibrium. This means that the respective concentrations of reactants and products do not change over time. In theory, a chemical reaction will remain in equilibrium indefinitely. One of the common tasks in the chemistry lab is to find the equilibrium constant (or set of relative concentrations that result in equilibrium) for a given reaction. In thermal equilibrium, there is no net heat exchange between a body and its surroundings. In dynamic equilibrium, any motion in one direction is offset by an equal motion in the other direction. Question: 2 What is 119 K in degrees Celsius? A.32°C B.-154°C C.154°C D.-32°C Answer: B Explanation: 119°K is equivalent to -154 degrees Celsius. To convert degrees Kelvin to degrees Celsius, simply subtract 273. To convert degrees Celsius to degrees Kelvin, simply add 273. To convert degrees Kelvin into degrees Fahrenheit, multiply by 9/5 and subtract 460. To convert degrees Fahrenheit to degrees Kelvin, add 460 and then multiply by 5/9. To convert degrees Celsius to degrees Fahrenheit, multiply by 9/5 and then add 32. To convert degrees Fahrenheit to degrees Celsius, subtract 32 and then multiply by 5/9. Question: 3 Visit us athttps://www.certsgrade.com/pdf/hiset/

3. What is the SI unit of energy? A.Ohm B.Joule C.Henry D.Newton Answer: B Explanation: The joule is the SI unit of energy. Energy is the ability to do work or generate heat. In regard to electrical energy, a joule is the amount of electrical energy required to pass a current of one ampere through a resistance of one ohm for one second. In physical or mechanical terms, the joule is the amount of energy required for a force of one newton to act over a distance of one meter. The ohm is a unit of electrical resistance. The henry is a unit of inductance. The newton is a unit of force. Question: 4 What is the name of the device that separates gaseous ions by their mass-to-charge ratio? A.Mass spectrometer B.Interferometer C.Magnetometer D.Capacitance meter Answer: A Explanation: A mass spectrometer separates gaseous ions according to their mass-to-charge ratio. This machine is used to distinguish the various elements in a piece of matter. An interferometer measures the wavelength of light by comparing the interference phenomena of two waves: an experimental wave and a reference wave. A magnetometer measures the direction and magnitude of a magnetic field. Finally, a capacitance meter measures the capacitance of a capacitor. Some sophisticated capacitance meters may also measure inductance, leakage, and equivalent series resistance. Question: 5 Which material has the smallest specific heat? A.Water B.Wood C.Aluminum D.Glass Visit us athttps://www.certsgrade.com/pdf/hiset/

4. Answer: C Explanation: Of the given materials, aluminum has the smallest specific heat. The specific heat of a substance is the amount of heat required to raise the temperature of one gram of the substance by one degree Celsius. In some cases, specific heat is expressed as a ratio of the heat required to raise the temperature of one gram of a substance by one degree Celsius to the heat required to raise the temperature of one gram of water by one degree Celsius. Question: 6 What is the name for a reaction in which electrons are transferred from one atom to another? A.Combustion reaction B.Synthesis reaction C.Redox reaction D.Double-displacement reaction Answer: B Explanation: In a redox reaction, also known as an oxidation-reduction reaction, electrons are transferred from one atom to another. A redox reaction changes the oxidation numbers of the atoms. In a combustion reaction, one material combines with an oxidizer to form a product and generate heat. In a synthesis reaction, multiple chemicals are combined to create a more complex product. In a double-displacement reaction, two chemical compounds trade bonds or ions and create two different compounds. Question: 7 What are van der Waals forces? A.The weak forces of attraction between two molecules B.The strong forces of attraction between two molecules C.Hydrogen bonds D.Conjugal bonds Answer: A Explanation: Van der Waals forces are the weak forces of attraction between two molecules. The van der Waals force is considered to be any of the attractive or repulsive forces between electrons that are not related to electrostatic interaction or covalent bonds. Compared to other chemical bonds, the strength of van der Waals forces is small. However, these forces have a great effect on a substance's solubility and other characteristics. Visit us athttps://www.certsgrade.com/pdf/hiset/

5. Question: 8 What is the name for the number of protons in an atom? A.Atomic identity B.Atomic mass C.Atomic weight D.Atomic number Answer: D Explanation: The number of protons in an atom is the atomic number. Protons are the fundamental positive unit of an atom. They are located in the nucleus. In a neutral atom (an atom with neither positive nor negative charge), the number of protons in the nucleus is equal to the number of electrons orbiting the nucleus. When it needs to be expressed, atomic number is written as a subscript in front of the element's symbol, for example in 13Al. Atomic mass, meanwhile, is the average mass of the various isotopes of a given element. Atomic identity and atomic weight are not concepts in chemistry. Question: 9 Which events are correctly paired to show cause and effect? A.the Spanish-American War → the U.S. annexation of Hawaii B.the assassination of William McKinley → the decline of U.S. imperialism C.the Russo-Japanese War→ the Boxer Rebellion D.the Platt Amendment → the establishment of the U.S. naval base at Guantanamo Bay Correct Answer: D Explanation: The Platt Amendment of 1899 granted the United States the right to intervene in Cuban affairs and maintain a presence on the island. Hawaii was annexed shortly before the Spanish-American War. U.S. imperialism was accelerated following McKinley's assassination. The Boxer Rebellion of 1900 took place in China and preceded the Russo-Japanese War, which began in 1904. Question: 10 Put the following events in order from oldest to most recent. 1) Martin Luther King led the March on Washington. 2) Brown v. Board of Education overturned the policy of "separate but equal" education. 3) The Student Non-Violent Coordinating Committee began staging sit-ins at segregated lunch counters in the South. 4) The arrest of Rosa Parks sparked the Montgomery Bus Boycott. Visit us athttps://www.certsgrade.com/pdf/hiset/

6. A.2,4,3,1 B.1,3,2,4 C.3,4,1,2 D.2,1,4,3 Answer: A Explanation: Brown v. Board of Education was decided in 1954. Rosa Parks was arrested in 1955. The lunch counter sit- ins were staged in 1960. The March on Washington took place in 1963. Visit us athttps://www.certsgrade.com/pdf/hiset/

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