The correct answer is option [C] Boiling. Boiling is the process where a substance changes from its liquid state to vapor state throughout the bulk of the liquid, typically occurring at a specific temperature called the boiling point. Option [A] Melting refers to the solid-to-liquid phase transitionRead more
The correct answer is option [C] Boiling. Boiling is the process where a substance changes from its liquid state to vapor state throughout the bulk of the liquid, typically occurring at a specific temperature called the boiling point. Option [A] Melting refers to the solid-to-liquid phase transition. Option [B] Evaporation involves the conversion of a liquid into vapor at the surface, while boiling occurs throughout the liquid. Therefore, option [C] accurately describes the change of state from liquid to vapor. Option [D] None of these is incorrect as boiling specifically denotes this transition.
The correct answer is option [B] higher. Alloys, being mixtures of different metals, often exhibit higher melting points compared to their constituent metals. This is because the addition of different metals alters the atomic structure, creating stronger intermolecular forces that require higher temRead more
The correct answer is option [B] higher. Alloys, being mixtures of different metals, often exhibit higher melting points compared to their constituent metals. This is because the addition of different metals alters the atomic structure, creating stronger intermolecular forces that require higher temperatures to break, thus raising the melting point. Therefore, option [B] is correct. Options [A] lower, [C] equal, and [D] none of these do not accurately represent the typical behavior of alloys, which tend to have higher melting points due to their mixed composition.
The effect on the melting point of a pure substance when another substance is added depends on the nature and quantity of the added substance. Typically, the presence of impurities lowers the melting point of the pure substance. This occurs because impurities disrupt the regular arrangement of partiRead more
The effect on the melting point of a pure substance when another substance is added depends on the nature and quantity of the added substance. Typically, the presence of impurities lowers the melting point of the pure substance. This occurs because impurities disrupt the regular arrangement of particles in the solid, making it easier for the substance to overcome intermolecular forces and transition into the liquid phase. Thus, the correct answer is option [B] Decreases. In some cases, if the added substance forms a compound with the pure substance, it may initially increase the melting point due to stronger intermolecular forces, but eventually, as more impurities are added, the melting point decreases. However, in most scenarios, the presence of impurities leads to a decrease in the melting point of the pure substance.
The correct answer is option [D] All of the above. Sublimate substances refer to those that undergo sublimation, transitioning directly from solid to vapor phase. Camphor, naphthalene, and ammonium chloride are examples of such substances. Camphor and naphthalene are commonly encountered examples, uRead more
The correct answer is option [D] All of the above. Sublimate substances refer to those that undergo sublimation, transitioning directly from solid to vapor phase. Camphor, naphthalene, and ammonium chloride are examples of such substances. Camphor and naphthalene are commonly encountered examples, used in products like mothballs and vaporizers. Ammonium chloride, often used in laboratories, also sublimes when heated, forming white fumes. Therefore, all options—camphor, naphthalene, and ammonium chloride—exhibit sublimation behavior, making option [D] the correct choice.
The correct answer is option [C] Sublimation. Sublimation is the process whereby a solid substance transitions directly into the vapor phase without passing through the liquid phase. This occurs when the vapor pressure of the solid exceeds the atmospheric pressure at a certain temperature, allowingRead more
The correct answer is option [C] Sublimation. Sublimation is the process whereby a solid substance transitions directly into the vapor phase without passing through the liquid phase. This occurs when the vapor pressure of the solid exceeds the atmospheric pressure at a certain temperature, allowing molecules to escape the solid lattice and enter the gas phase. Common examples of substances that undergo sublimation include dry ice (solid carbon dioxide) and mothballs (naphthalene). Unlike boiling, which involves the conversion of a liquid into vapor, sublimation bypasses the liquid phase entirely. Distillation is a separation technique involving the separation of components in a liquid mixture based on differences in their boiling points. Polymerization is a chemical reaction in which monomers combine to form polymer chains. Thus, only option [C], sublimation, accurately describes the transformation of a solid substance into vapor without becoming a liquid.
The change of state of a substance from liquid to vapor is called
The correct answer is option [C] Boiling. Boiling is the process where a substance changes from its liquid state to vapor state throughout the bulk of the liquid, typically occurring at a specific temperature called the boiling point. Option [A] Melting refers to the solid-to-liquid phase transitionRead more
The correct answer is option [C] Boiling. Boiling is the process where a substance changes from its liquid state to vapor state throughout the bulk of the liquid, typically occurring at a specific temperature called the boiling point. Option [A] Melting refers to the solid-to-liquid phase transition. Option [B] Evaporation involves the conversion of a liquid into vapor at the surface, while boiling occurs throughout the liquid. Therefore, option [C] accurately describes the change of state from liquid to vapor. Option [D] None of these is incorrect as boiling specifically denotes this transition.
See lessThe melting point of alloys is
The correct answer is option [B] higher. Alloys, being mixtures of different metals, often exhibit higher melting points compared to their constituent metals. This is because the addition of different metals alters the atomic structure, creating stronger intermolecular forces that require higher temRead more
The correct answer is option [B] higher. Alloys, being mixtures of different metals, often exhibit higher melting points compared to their constituent metals. This is because the addition of different metals alters the atomic structure, creating stronger intermolecular forces that require higher temperatures to break, thus raising the melting point. Therefore, option [B] is correct. Options [A] lower, [C] equal, and [D] none of these do not accurately represent the typical behavior of alloys, which tend to have higher melting points due to their mixed composition.
See lessWhat is the effect on the melting point of a pure substance if any other substance is added to it?
The effect on the melting point of a pure substance when another substance is added depends on the nature and quantity of the added substance. Typically, the presence of impurities lowers the melting point of the pure substance. This occurs because impurities disrupt the regular arrangement of partiRead more
The effect on the melting point of a pure substance when another substance is added depends on the nature and quantity of the added substance. Typically, the presence of impurities lowers the melting point of the pure substance. This occurs because impurities disrupt the regular arrangement of particles in the solid, making it easier for the substance to overcome intermolecular forces and transition into the liquid phase. Thus, the correct answer is option [B] Decreases. In some cases, if the added substance forms a compound with the pure substance, it may initially increase the melting point due to stronger intermolecular forces, but eventually, as more impurities are added, the melting point decreases. However, in most scenarios, the presence of impurities leads to a decrease in the melting point of the pure substance.
See lessSublimate substances are
The correct answer is option [D] All of the above. Sublimate substances refer to those that undergo sublimation, transitioning directly from solid to vapor phase. Camphor, naphthalene, and ammonium chloride are examples of such substances. Camphor and naphthalene are commonly encountered examples, uRead more
The correct answer is option [D] All of the above. Sublimate substances refer to those that undergo sublimation, transitioning directly from solid to vapor phase. Camphor, naphthalene, and ammonium chloride are examples of such substances. Camphor and naphthalene are commonly encountered examples, used in products like mothballs and vaporizers. Ammonium chloride, often used in laboratories, also sublimes when heated, forming white fumes. Therefore, all options—camphor, naphthalene, and ammonium chloride—exhibit sublimation behavior, making option [D] the correct choice.
See lessThe transformation of a solid substance directly into vapor state without changing into liquid is called
The correct answer is option [C] Sublimation. Sublimation is the process whereby a solid substance transitions directly into the vapor phase without passing through the liquid phase. This occurs when the vapor pressure of the solid exceeds the atmospheric pressure at a certain temperature, allowingRead more
The correct answer is option [C] Sublimation. Sublimation is the process whereby a solid substance transitions directly into the vapor phase without passing through the liquid phase. This occurs when the vapor pressure of the solid exceeds the atmospheric pressure at a certain temperature, allowing molecules to escape the solid lattice and enter the gas phase. Common examples of substances that undergo sublimation include dry ice (solid carbon dioxide) and mothballs (naphthalene). Unlike boiling, which involves the conversion of a liquid into vapor, sublimation bypasses the liquid phase entirely. Distillation is a separation technique involving the separation of components in a liquid mixture based on differences in their boiling points. Polymerization is a chemical reaction in which monomers combine to form polymer chains. Thus, only option [C], sublimation, accurately describes the transformation of a solid substance into vapor without becoming a liquid.
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