Melting of wax is accompanied with __________ in entropy. (A) Increase (B) Decrease (C) No change (D) None of these

Melting of wax is accompanied with __________ in entropy. (A) Increase
(B) Decrease
(C) No change
(D) None of these
by

1 Answer

Answer :

(A) Increase
by

Related questions

Pick out the correct statement. (A) Like internal energy and enthalpy, the absolute value of standard entropy for elementary substances is zero (B) Melting of ice involves increase in enthalpy and a decrease in randomness (C) The internal energy of an ideal gas depends only on its pressure (D) Maximum work is done under reversible conditions

Description : Pick out the correct statement. (A) Like internal energy and enthalpy, the absolute value of standard entropy for elementary substances is zero (B) Melting of ice involves increase in enthalpy and ... of an ideal gas depends only on its pressure (D) Maximum work is done under reversible conditions

Last Answer : (D) Maximum work is done under reversible conditions

Boiling of liquid is accompanied with increase in the (A) Vapor pressure (B) Specific Gibbs free energy (C) Specific entropy (D) All (A), (B) and (C)

Description : Boiling of liquid is accompanied with increase in the (A) Vapor pressure (B) Specific Gibbs free energy (C) Specific entropy (D) All (A), (B) and (C)

Last Answer : (A) Vapor pressure

__________ increases with increase in pressure. (A) The melting point of wax (B) The boiling point of a liquid (C) Both (A) and (B) (D) Neither (A) nor (B)

Description : __________ increases with increase in pressure. (A) The melting point of wax (B) The boiling point of a liquid (C) Both (A) and (B) (D) Neither (A) nor (B)

Last Answer : (C) Both (A) and (B)

Specific __________ does not change during a phase change (e.g. sublimation, melting, vaporisation etc.). (A) Entropy (B) Internal energy (C) Enthalpy (D) Gibbs free energy

Description : Specific __________ does not change during a phase change (e.g. sublimation, melting, vaporisation etc.). (A) Entropy (B) Internal energy (C) Enthalpy (D) Gibbs free energy

Last Answer : (D) Gibbs free energy

Absorption accompanied by heat evolution results in (A) Increased capacity of the absorber (B) Increase in equilibrium solubility (C) Decrease in equilibrium solubility (D) None of these

Description : Absorption accompanied by heat evolution results in (A) Increased capacity of the absorber (B) Increase in equilibrium solubility (C) Decrease in equilibrium solubility (D) None of these

Last Answer : (C) Decrease in equilibrium solubility

Which of the following decreases with increase in pressure? (A) Melting point of ice (B) Melting point of wax (C) Boiling point of liquids (D) None of these

Description : Which of the following decreases with increase in pressure? (A) Melting point of ice (B) Melting point of wax (C) Boiling point of liquids (D) None of these

Last Answer : (A) Melting point of ice

The melting point of paraffin wax (which contracts on solidification) __________ with pressure rise. (A) Increases (B) Decreases (C) Remains unchanged (D) Decreases linearly

Description : The melting point of paraffin wax (which contracts on solidification) __________ with pressure rise. (A) Increases (B) Decreases (C) Remains unchanged (D) Decreases linearly

Last Answer : (A) Increases

An increase in carbohydrate metabolism is accompanied by temporary decrease in serum: (A) Calcium (B) Phosphate (C) Iron (D) Sodium

Description : An increase in carbohydrate metabolism is accompanied by temporary decrease in serum: (A) Calcium (B) Phosphate (C) Iron (D) Sodium

Last Answer : Answer : B

The equilibrium price of a commodity will definitely rise if there is a/an: (1) increase in supply combined with a decrease in demand. (2) increase in both demand and supply. (3) decrease in both demand and supply. (4) increase in demand accompanied by a decrease in supply.

Description : The equilibrium price of a commodity will definitely rise if there is a/an: (1) increase in supply combined with a decrease in demand. (2) increase in both demand and supply. (3) decrease in both demand and supply. (4) increase in demand accompanied by a decrease in supply.

Last Answer : (4) increase in demand accompanied by a decrease in supply. Explanation: Price of a commodity is always determined by the forces of demand and supply in the market. The price at which ... equilibrium price definitely increases when there is an increase in demand combined with the decrease in supply.

Fund flow statement is accompanied by a schedule of----------------------------- a) Changes in working capital b) Flow of funds c) Increase in fund d) Decrease in fund

Description : Fund flow statement is accompanied by a schedule of----------------------------- a) Changes in working capital b) Flow of funds c) Increase in fund d) Decrease in fund

Last Answer : a) Changes in working capital

The equilibrium price of a commodity will definitely rise if there is a/an : (1) increase in supply combined with a decrease in demand. (2) increase in both demand and supply. (3) decrease in both demand and supply. (4) increase in demand accompanied by a decrease in supply.

Description : The equilibrium price of a commodity will definitely rise if there is a/an : (1) increase in supply combined with a decrease in demand. (2) increase in both demand and supply. (3) decrease in both demand and supply. (4) increase in demand accompanied by a decrease in supply.

Last Answer : increase in demand accompanied by a decrease in supply.

_________ does not change during phase transformation processes like sublimation, melting & vaporisation. (A) Entropy (B) Gibbs free energy (C) Internal energy (D) All (A), (B) & (C)

Description : _________ does not change during phase transformation processes like sublimation, melting & vaporisation. (A) Entropy (B) Gibbs free energy (C) Internal energy (D) All (A), (B) & (C)

Last Answer : (B) Gibbs free energy

When ice cubes are made, the entropy of water – (1) does not change (2) decreases (3) increases (4) may either increase or decrease depending on the process used

Description : When ice cubes are made, the entropy of water – (1) does not change (2) decreases (3) increases (4) may either increase or decrease depending on the process used

Last Answer : (2) decreases Explanation: When water is frozen into ice, the temperature drops below 0°C. Since the entropy of the solid is less than that of the liquid, the entropy of the water (the system ... decrease is found by dividing the heat of fusion of ice by the temperature for the reversible pathway.

When ice cubes are made, the entropy of water (1) does not change (2) decreases (3) increases (4) may either increase or decrease depending on the process used

Description : When ice cubes are made, the entropy of water (1) does not change (2) decreases (3) increases (4) may either increase or decrease depending on the process used

Last Answer : decreases

Increase in the entropy of a system represents the (A) Degradation of energy (B) Decrease in system pressure (C) Increase in the availability of energy (D) Increase in the temperature

Description : Increase in the entropy of a system represents the (A) Degradation of energy (B) Decrease in system pressure (C) Increase in the availability of energy (D) Increase in the temperature

Last Answer : Option A

During coal carbonisation process, the conversion of semi-coke to coke is accompanied by an increase in the __________ of the mass. (A) Density (B) Porosity (C) Electrical resistivity (D) None of these

Description : During coal carbonisation process, the conversion of semi-coke to coke is accompanied by an increase in the __________ of the mass. (A) Density (B) Porosity (C) Electrical resistivity (D) None of these

Last Answer : (A) Density

An oxidation process is accompanied with decrease in the (A) Number of electrons (B) Oxidation number (C) Number of ions (D) All (A), (B) & (C)

Description : An oxidation process is accompanied with decrease in the (A) Number of electrons (B) Oxidation number (C) Number of ions (D) All (A), (B) & (C)

Last Answer : (A) Number of electrons

A change in state involving a decrease in entropy can be spontaneous, only if (A) It is exothermic (B) It is isenthalpic (C) It takes place isothermally (D) It takes place at constant volume

Description : A change in state involving a decrease in entropy can be spontaneous, only if (A) It is exothermic (B) It is isenthalpic (C) It takes place isothermally (D) It takes place at constant volume

Last Answer : (A) It is exothermic

As the impurities are oxidised, the melting point of iron (A) Decreases (B) Remains unchanged (C) Increases (D) May increase or decrease; unpredictable

Description : As the impurities are oxidised, the melting point of iron (A) Decreases (B) Remains unchanged (C) Increases (D) May increase or decrease; unpredictable

Last Answer : (C) Increases

The atmospheric temperature during melting of ice/snow (in the atmosphere) (A) Decreases (B) Increases (C) Remain same (D) May increase or decrease; depends on the altitude where snow melts Answer

Description : The atmospheric temperature during melting of ice/snow (in the atmosphere) (A) Decreases (B) Increases (C) Remain same (D) May increase or decrease; depends on the altitude where snow melts Answer

Last Answer : A) Decreases

mm kit 2 days have passed. Now the pain is accompanied by fever. What should I do for pain ? I have taken neprosin 500. Pain does not decrease. Is it normal to have pain ? What to do for this ?

Description : mm kit 2 days have passed. Now the pain is accompanied by fever. What should I do for pain ? I have taken neprosin 500. Pain does not decrease. Is it normal to have pain ? What to do for this ?

Last Answer : Pain is normal. Tab- Napa Extend 1 + 1 + 1 Eat after meals , three days.

The following are true: a. depth of perception only occurs in patients with normal visual acuities in both eye b. Hering's law states that increased innervation to an extraocular muscle is accompanied by a decrease in innervation to its antagonists. c. objects on the Panum's area fall on simultaneous areas of the retina d. objects outside of the Panum's area are perceived as doubl

Description : The following are true: a. depth of perception only occurs in patients with normal visual acuities in both eye b. Hering's law states that increased innervation to an extraocular muscle is ... simultaneous areas of the retina d. objects outside of the Panum's area are perceived as doubl

Last Answer : objects outside of the Panum's area are perceived as doubl

What is the melting point of wax when pressure increases ?

Description : What is the melting point of wax when pressure increases ?

Last Answer : As the pressure increases, the melting point of the wax increases.

Why is melting wax a physical properties of flammability is a chemical property?

Description : Why is melting wax a physical properties of flammability is a chemical property?

Last Answer : Melting is a physical property because the chemical composition remain unchanged.Flammability is a chemical property because involve a combustion reaction.

Recycling back of outlet stream to the reactor from an ideal CSTR carrying out a first order liquid phase reaction will result in __________ in conversion. (A) Decrease (B) Increase (C) No change (D) Either (A) or (B), depends on the type of reaction

Description : Recycling back of outlet stream to the reactor from an ideal CSTR carrying out a first order liquid phase reaction will result in __________ in conversion. (A) Decrease (B) Increase (C) No change (D) Either (A) or (B), depends on the type of reaction

Last Answer : (C) No change

In case of calcination of limestone, CaCO3 CaO + CO2 , the addition of more of CaO will result in __________ in the concentration of CO2 . (A) No change (B) Increase (C) Decrease (D) Unpredictable from the data

Description : In case of calcination of limestone, CaCO3 CaO + CO2 , the addition of more of CaO will result in __________ in the concentration of CO2 . (A) No change (B) Increase (C) Decrease (D) Unpredictable from the data

Last Answer : (A) No change

In __________ process, there is an increase in entropy with no degradation of energy. (A) Isothermal expansion (B) Isochoric heat addition (C) Polytropic expansion (D) Isobaric heat addition

Description : In __________ process, there is an increase in entropy with no degradation of energy. (A) Isothermal expansion (B) Isochoric heat addition (C) Polytropic expansion (D) Isobaric heat addition

Last Answer : (A) Isothermal expansion

The melting points of aldehydes and ketones tend to : (a) decrease with increasing molecular weight. (b) increase with increasing molecular weight. (c) remain unchanged with increasing molecular weight. (d) be unpredictable due to resonance

Description : The melting points of aldehydes and ketones tend to : (a) decrease with increasing molecular weight. (b) increase with increasing molecular weight. (c) remain unchanged with increasing molecular weight. (d) be unpredictable due to resonance

Last Answer : increase with increasing molecular weight.

For a spontaneous process, free energy (A) Is zero (B) Increases (C) Decreases whereas the entropy increases (D) And entropy both decrease

Description : For a spontaneous process, free energy (A) Is zero (B) Increases (C) Decreases whereas the entropy increases (D) And entropy both decrease

Last Answer : C) Decreases whereas the entropy increases

Pick out the wrong statement. (A) Cp of monatomic gases such as metallic vapor is about 5 kcal/kg.atom (B) The heat capacity of solid inorganic substance is exactly equal to the heatcapacity of the substance in the molten state(C) There is an increase in entropy, when a spontaneous change occurs in anisolated system(D) At absolute zero temperature, the heat capacity for many pure crystallinesubstances is zero

Description : Pick out the wrong statement. (A) Cp of monatomic gases such as metallic vapor is about 5 kcal/kg.atom (B) The heat capacity of solid inorganic substance is exactly equal to the ... isolated system (D) At absolute zero temperature, the heat capacity for many pure crystalline substances is zero

Last Answer : (C) There is an increase in entropy, when a spontaneous change occurs in an isolated system

A photochemical reaction is __________ light. (A) Initiated by (B) Accompanied with emission of (C) Catalysed by (D) Used to convert heat energy into

Description : A photochemical reaction is __________ light. (A) Initiated by (B) Accompanied with emission of (C) Catalysed by (D) Used to convert heat energy into

Last Answer : (A) Initiated by

The expression for entropy change, ΔS = n Cp. ln (T2/T1), is valid for the __________ of a substance. (A) Simultaneous pressure & temperature change (B) Heating (C) Cooling (D) Both (B) and (C)

Description : The expression for entropy change, ΔS = n Cp. ln (T2/T1), is valid for the __________ of a substance. (A) Simultaneous pressure & temperature change (B) Heating (C) Cooling (D) Both (B) and (C)

Last Answer : (D) Both (B) and (C)

Specific __________ does not change during phase change at constant temperature and pressure. (A) Entropy (B) Gibbs energy (C) Internal energy (D) Enthalpy

Description : Specific __________ does not change during phase change at constant temperature and pressure. (A) Entropy (B) Gibbs energy (C) Internal energy (D) Enthalpy

Last Answer : (B) Gibbs energy

Entropy of a substance remains constant during a/an __________ change. (A) Reversible isothermal (B) Irreversible isothermal (C) Reversible adiabatic (D) None of these

Description : Entropy of a substance remains constant during a/an __________ change. (A) Reversible isothermal (B) Irreversible isothermal (C) Reversible adiabatic (D) None of these

Last Answer : (C) Reversible adiabatic

Horsepower increase of a centrifugal gas compressor without altering the volumetric flow rate will __________ the gas discharge pressure. (A) Increase (B) Decrease (C) Not change (D) Exponentially decrease

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Last Answer : (A) Increase

Pick out the correct statement. (A) A chemical reaction accompanied by absorption of heat is called an exothermic reaction (B) A chemical reaction accompanied by evolution of heat is called an endothermic reaction (C) The rate constant for a first order reaction does not change on changing the concentration units (D) Chemical equilibrium state is dynamic in nature

Description : Pick out the correct statement. (A) A chemical reaction accompanied by absorption of heat is called an exothermic reaction (B) A chemical reaction accompanied by evolution of heat is called an ... does not change on changing the concentration units (D) Chemical equilibrium state is dynamic in nature

Last Answer : (C) The rate constant for a first order reaction does not change on changing the concentration units

Pick up the correct statement from the following: (A) The rise of the ground surface due to frost action is called frost heave (B) The freezing of water is accompanied by a volume increase of 9% (C) Below freezing point, higher soil suction develops (D) All the above

Description : Pick up the correct statement from the following: (A) The rise of the ground surface due to frost action is called frost heave (B) The freezing of water is accompanied by a volume increase of 9% (C) Below freezing point, higher soil suction develops (D) All the above

Last Answer : (D) All the above

Pick up the correct statement from the following: (A) An increase in water content must be accompanied by an increase in cement content (B) Angular and rough aggregates reduce the workability of the concrete (C) The slump of the concrete mix decreases due to an increase in temperature (D) All the above

Description : Pick up the correct statement from the following: (A) An increase in water content must be accompanied by an increase in cement content (B) Angular and rough aggregates reduce the workability of the ... The slump of the concrete mix decreases due to an increase in temperature (D) All the above

Last Answer : Answer: Option D

Does a blackhole decrease entropy in the universe?

Description : Does a blackhole decrease entropy in the universe?

Last Answer : I can't shed too much light on the problem, beyond this one thought: scientists are always discovering new things about how our universe got to where it is and how it continues progressing. ... and theories presented by Stephen Hawking, you may also find some good leads from this Wikipedia article.

In which of following there is decrease in entropy :-

Description : In which of following there is decrease in entropy :-

Last Answer : In which of following there is decrease in entropy :- A. When temperature is raised from 30 K to ... rarr 2H(g)` D. Liquid crystalises into a solid

In any chemical reaction, a quantity that decrease to a minimum is: w) free energy x) entropy y) temperature z) enthalpy

Description : In any chemical reaction, a quantity that decrease to a minimum is: w) free energy x) entropy y) temperature z) enthalpy

Last Answer : ANSWER: W -- FREE ENERGY

Spontaneous change is one in there is: (1) A lowering of entropy (2) A lowering of free energy (3) Increase in free energy (4) An increase in Internal energy

Description : Spontaneous change is one in there is: (1) A lowering of entropy (2) A lowering of free energy (3) Increase in free energy (4) An increase in Internal energy

Last Answer : (2) A lowering of free energy Explanation: Entropy and enthalpy together make a new quantity, the Free Energy which, under conditions of constant temperature and pressure, determines the direction of spontaneous change. All spontaneous processes have a negative change in free energy.

Spontaneous change is one in there is: (1) A lowering of entropy (2) A lowering of free energy (3) Increase in free energy (4) An increase in Internal energy

Description : Spontaneous change is one in there is: (1) A lowering of entropy (2) A lowering of free energy (3) Increase in free energy (4) An increase in Internal energy

Last Answer : A lowering of free energy

The Record Officer is required to submit a daily report to the ______. The report should be accompanied by the daily reports of the __________ of the sections attached to the __________ and by the Sorting Assistants, written explanations (if any) of ________ committed by them. a) Superintendent , HSA & Mail agent, Record office, irregularities b) IRM, Record officer, Sections, irregularities c) Head of the circle, IRM, Mail office, irregularities d) None of these

Description : The Record Officer is required to submit a daily report to the ______. The report should be accompanied by the daily reports of the __________ of the sections attached to the __________ and by ... Sections, irregularities c) Head of the circle, IRM, Mail office, irregularities d) None of these

Last Answer : a) Superintendent , HSA & Mail agent, Record office, irregularities

Change of state namely evaporation condensation, freezing and melting is an __________ process. (A) Isothermal (B) Adiabatic (C) Isobaric (D) Isochoric

Description : Change of state namely evaporation condensation, freezing and melting is an __________ process. (A) Isothermal (B) Adiabatic (C) Isobaric (D) Isochoric

Last Answer : (A) Isothermal

Pick out the wrong statement. (A) Surface tension of a substance vanishes at critical point, as there is no distinction between liquid and vapour phases at its critical point (B) Entropy of a system decreases with the evolution of heat (C) Change of internal energy is negative for exothermic reactions (D) The eccentric factor for all materials is always more than one

Description : Pick out the wrong statement. (A) Surface tension of a substance vanishes at critical point, as there is no distinction between liquid and vapour phases at its critical point (B) Entropy of ... is negative for exothermic reactions (D) The eccentric factor for all materials is always more than one

Last Answer : (D) The eccentric factor for all materials is always more than one

When dilute aqueous solutions of two salts are mixed, the process is associated with (A) Decrease in temperature (B) Increase in temperature (C) No change in temperature (D) Change in temperature which is a function of composition

Description : When dilute aqueous solutions of two salts are mixed, the process is associated with (A) Decrease in temperature (B) Increase in temperature (C) No change in temperature (D) Change in temperature which is a function of composition

Last Answer : B) Increase in temperature

Copper sulphate crystals when heated strongly, lose their water of crystallization to give anhydrous copper sulphate accompanied by a change in color from: (a). Blue to green (b). Blue to white (c). Blue to sky blue (d). Blue to grey

Description : Copper sulphate crystals when heated strongly, lose their water of crystallization to give anhydrous copper sulphate accompanied by a change in color from: (a). Blue to green (b). Blue to white (c). Blue to sky blue (d). Blue to grey

Last Answer : (b). Blue to white

Both asphalt and wax are produced by __________ base crude oils. (A) Naphthenic (B) Asphalt (C) Paraffin (D) Mixed

Description : Both asphalt and wax are produced by __________ base crude oils. (A) Naphthenic (B) Asphalt (C) Paraffin (D) Mixed

Last Answer : (C) Paraffin

Deoiling is the process of removal of oil from wax. It is done by the __________ process. (A) Solvent extraction (B) Sweating (C) Resettling (D) All (A), (B) & (C)

Description : Deoiling is the process of removal of oil from wax. It is done by the __________ process. (A) Solvent extraction (B) Sweating (C) Resettling (D) All (A), (B) & (C)

Last Answer : (D) All (A), (B) & (C)