Explain how a solid converts into a liquid.

Explain how a solid converts into a liquid.
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Ans : Conversion Of Solid into Liquid : In solid substance when the particles absorb heat energy they undergo increased kinetic molecular movement that changes the arrangement of particles and thus changes the shape of solid substance. When the temperature is reached up to the melting point of solid all the particles absorbs sufficient heat energy to transform from solid to liquid state.
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Which one of the following statements about PYROLYSIS, which is a process for solid waste treatment is incorrect? (1) It converts the waste into solid, liquid and gas of which the resultant liquid and gas can be used to produce energy. (2) The process occurs at a temperature above 430°C at atmospheric pressure. (3) The process occurs under high pressure at temperature above 430° C. (4) It is a thermo chemical decomposition of organic waste

Description : Which one of the following statements about PYROLYSIS, which is a process for solid waste treatment is incorrect? (1) It converts the waste into solid, liquid and gas of which the resultant liquid ... pressure at temperature above 430° C. (4) It is a thermo chemical decomposition of organic waste

Last Answer : (2) The process occurs at a temperature above 430°C at atmospheric pressure. Explanation: Pyrolysis is a thermo-chemical decomposition of organic material at elevated temperatures in the ... . Pyrolysis generally takes place well above atmospheric pressure at temperatures exceeding above 430 °C.

Which one of the following statements about PYROLYSIS, which is a process for solid waste treatment is incorrect? (1) It converts the waste into solid, liquid and gas of which the resultant liquid and gas can be used to produce energy. (2) The process occurs at a temperature above 430°C at atmospheric pressure. (3) The process occurs under high pressure at temperature above 430° C. (4) It is a thermochemical decomposition of organic waste

Description : Which one of the following statements about PYROLYSIS, which is a process for solid waste treatment is incorrect? (1) It converts the waste into solid, liquid and gas of which the resultant ... high pressure at temperature above 430° C. (4) It is a thermochemical decomposition of organic waste

Last Answer : The process occurs at a temperature above 430°C at atmospheric pressure.

Explain how a liquid converts into a gas.

Description : Explain how a liquid converts into a gas.

Last Answer : Ans : Conversion Of Liquid into Gas : When a liquid is heated, the particles are given more energy. They start to move faster and further apart. At a certain temperature, the particles break free of one ... is the boiling point. The boiling point of a substance is always the same; it does not vary.

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Description : Gasification of the solid fuel converts its organic part into combustible by interaction with air/oxygen and steam so as to obtain a secondary gaseous fuel of high calorific value having no ash. Gasification reactions are ... __________ °C. (A) 400-500 (B) 900-1000 (C) 1400-1500 (D) 1700-1800

Last Answer : (B) 900-1000

Which of the following in the correct device that converts thermal energy into electrical energy? (1) constant volume gas thermometer (2) liquid-in-glass thermometer (3) thermopile (4) none of these

Description : Which of the following in the correct device that converts thermal energy into electrical energy? (1) constant volume gas thermometer (2) liquid-in-glass thermometer (3) thermopile (4) none of these

Last Answer : (3) thermopile Explanation: A thermopile is an electronic device that converts thermal energy into electrical energy.

Liquid fuels can be used to generate electricity in a variety of ways. Which of the following technologies converts liquid fuel directly to electricity without a combustion step? w) turbine x) battery y) fuel cell z) Stirling engine

Description : Liquid fuels can be used to generate electricity in a variety of ways. Which of the following technologies converts liquid fuel directly to electricity without a combustion step? w) turbine x) battery y) fuel cell z) Stirling engine

Last Answer : ANSWER: Y -- FUEL CELL  

Explain why o-hydroxybenzaldehyde is a liquid at room temperature while p-hydroxybenzaldehyde is a high melting solid.

Description : Explain why o-hydroxybenzaldehyde is a liquid at room temperature while p-hydroxybenzaldehyde is a high melting solid.

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Description : Predict the entropy change in- (i) A liquid crystallizes into solid (ii) Temperature of a crystalline solid raised from 0K to 115K.

Last Answer : Ans. (i) Entropy decreases because molecules attain an ordered state. (ii) Entropy increases because from 0K to 115K average kinetic of moleculesincreases.

A dynamo is a device which – (1) creates mechanical energy (2) creates electrical energy (3) converts mechanical energy into electrical energy (4) converts electrical energy into mechanical energy

Description : A dynamo is a device which – (1) creates mechanical energy (2) creates electrical energy (3) converts mechanical energy into electrical energy (4) converts electrical energy into mechanical energy

Last Answer : (3) converts mechanical energy into electrical energy Explanation: A dynamo is an electrical generator that produces direct current with the use of a commutator. Dynamos were the first electrical ... based, including the electric motor, the alternating-current alternator, and the rotary converter.

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Description : A transformer – (1) converts DC to AC (2) is used to decrease or increase AC voltage (3) converts AC voltage to D.C. voltage (4) converts electrical energy into mechanical energy

Last Answer : (2) is used to decrease or increase AC voltage Explanation: Transformers have made longdistance transmission of electric power a practical reality, as AC voltage can be "stepped up" and ... the loads), voltage levels are reduced by transformers for safer operation and less expensive equipment.

What role does enzyme pepsin play? (1) It converts fats into acids (2) If converts fats into glycerol (3) It converts proteins into peptones (4) It converts starch into sugar

Description : What role does enzyme pepsin play? (1) It converts fats into acids (2) If converts fats into glycerol (3) It converts proteins into peptones (4) It converts starch into sugar

Last Answer : (3) It converts proteins into peptones Explanation: Pepsin is an endopeptidase that breaks down proteins into peptone and polypeptides. If is produced in the stomach and is one of the main digestive enzymes.

___________ converts electrical energy into chemical energy. a) Galvanic cell b) Voltaic cell c) Electrolytic cell d) Leclanche cell

Description : ___________ converts electrical energy into chemical energy. a) Galvanic cell b) Voltaic cell c) Electrolytic cell d) Leclanche cell

Last Answer : c) Electrolytic cell

The absolute zero is a temperature at which ______. (1) molecular motion in a gas would cease (2) water freezes (3) all gases become liquid (4) all gases become solid

Description : The absolute zero is a temperature at which ______. (1) molecular motion in a gas would cease (2) water freezes (3) all gases become liquid (4) all gases become solid

Last Answer : (1) molecular motion in a gas would cease Explanation: Absolute zero is the lowest possible temperature where nothing could be colder and no heat energy remains in a substance.

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Description : (4) Water drops in a dispersion medium of air Explanation: A colloid is a substance microscopically dispersed evenly throughout another substance. A colloidal system consists of two separate phases: a dispersed ... or gas. Cloud is a colloidal dispersion of Water drops in a dispersion medium of air.

Last Answer : Conduction band electrons have more mobility than holes because they – (1) are lighter (2) experience collision less frequently (3) have negative charge (4) need less energy to move them

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Description : (2) Fat is dispersed in water Explanation: A colloid is a substance microscopically dispersed evenly throughout another substance. A colloidal system consists of two separate phases: a dispersed ... Milk is an emulsified colloid of liquid butterfat globules dispersed within a water-based solution.

Last Answer : The presence of ozone in the stratosphere is responsible for – (1) increasing the average global temperature in recent years (2) higher rate of photosynthesis (3) checking the penetration of ultra-violet rays to the earth (4) supplying oxygen for people travelling in jets

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Description : (2) Fat is dispersed in water Explanation: A colloid is a substance microscopically dispersed evenly throughout another substance. A colloidal system consists of two separate phases: a dispersed ... Milk is an emulsified colloid of liquid butterfat globules dispersed within a water-based solution.

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Last Answer : The BOD values of water indicate the (1) amount of organic debris (2) amount of oxygen used for biochemical oxidation (3) amount of oxygen used for biochemical reduction (4) amount of ozone used for biochemical oxidation

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Description : Mercury is a – (1) solid metal (2) liquid metal (3) solid non-metal (4) liquid non-metal

Last Answer : (2) liquid metal Explanation: A heavy, silvery d-block element, Mercury is the only metal that is liquid at standard conditions for temperature and pressure; the only other element that is liquid under these ... of 356.73 °C, mercury has one of the narrowest ranges of its liquid state of any metal.

Glass is - (1) Super cooled liquid (2) Crystalline solid (3) Liquid crystal (4) None of these

Description : Glass is - (1) Super cooled liquid (2) Crystalline solid (3) Liquid crystal (4) None of these

Last Answer : (1) Super cooled liquid Explanation: Glass is sometimes called a Super cooled liquid because it does not form a crystalline structure, but instead forms an amorphous solid that allows molecules in the material to continue to move.

An emulsion is a colloidal solution of - (1) Liquid in liquid (2) Solid in liquid (3) Gas in solid (4) Solid in Solid

Description : An emulsion is a colloidal solution of - (1) Liquid in liquid (2) Solid in liquid (3) Gas in solid (4) Solid in Solid

Last Answer : (1) Liquid in liquid Explanation: An emulsion is a mixture of two or more liquids that are normally immiscible (unmixable or unblendable). Emulsions are part of a more general class ... of emulsions include vinaigrettes, homogenized milk, mayonnaise, and some cutting fluids for metal working.

Glass is a – (1) superheated solid (2) supercooled liquid (3) supercooled gas (4) superheated liquid

Description : Glass is a – (1) superheated solid (2) supercooled liquid (3) supercooled gas (4) superheated liquid

Last Answer : (2) supercooled liquid Explanation: Glass is an amorphous (noncrystalline) solid material. Glasses are typically brittle and optically transparent. The standard definition of a glass (or vitreous solid) is ... structure of a glass exists in a meta-stable state with respect to its crystalline form.

Bromine is- (1) Colorless gas insoluble in water (2) A highly inflammable gas (3) A Black solid (4) A red liquid

Description : Bromine is- (1) Colorless gas insoluble in water (2) A highly inflammable gas (3) A Black solid (4) A red liquid

Last Answer : (4) A red liquid Explanation: Bromine is a chemical element with symbol Br and atomic number 35. It is the third-lightest halogen, and is a fuming liquid with a deep red color. At room temperature, Bromine evaporates readily to form a red to amber colored gas.

The substance which does not expand on going from liquid state to solid state is – (1) Water (2) Cast-iron (3) Aluminium (4) Type metal

Description : The substance which does not expand on going from liquid state to solid state is – (1) Water (2) Cast-iron (3) Aluminium (4) Type metal

Last Answer : (4) Type metal Explanation: In printing, type metal (sometimes called hot metal) refers to the metal alloys used in traditional type founding and hot metal typesetting. Lead is the main constituent of ... and solidifies in a simple manner at a specific temperature. This is not the case with alloys.

Smoke is formed due to – (1) Solid dispersed in gas (2) Solid dispersed in liquid (3) gas dispersed in solid (4) gas dispersed in gas

Description : Smoke is formed due to – (1) Solid dispersed in gas (2) Solid dispersed in liquid (3) gas dispersed in solid (4) gas dispersed in gas

Last Answer : (1) Solid dispersed in gas Explanation: Smoke is a collection of airborne solid and liquid particulates and gases emitted when a material undergoes combustion or pyrolysis, together with the quantity of air ... military (smoke-screen), cooking (smoked salmon), or smoking (tobacco, cannabis, etc.).

Glass is a – (1) pure solid (2) supercooled liquid (3) gel (4) polymer

Description : Glass is a – (1) pure solid (2) supercooled liquid (3) gel (4) polymer

Last Answer : (2) supercooled liquid Explanation: Glass is an amorphous (noncrystalline) solid material. Glasses are typically brittle and optically transparent. The standard definition of a glass (or vitreous solid ... is often used to describe any amorphous solid that exhibits a glass transition temperature Tg.

An emulsion is a colloid of a – (1) gas in a liquid (2) liquid in a liquid (3) liquid in a gas (4) gas in a solid

Description : An emulsion is a colloid of a – (1) gas in a liquid (2) liquid in a liquid (3) liquid in a gas (4) gas in a solid

Last Answer : (2) liquid in a liquid Explanation: An emulsion is a mixture of two or more liquids that are normally immiscible (nonmixable or unblendable). Emulsions are part of a more general class of ... ). Examples of emulsions include vinaigrettes, milk, mayonnaise, and some cutting fluids for metal working.

Arrange solid, liquid and gas in order of energy. Give reason.

Description : Arrange solid, liquid and gas in order of energy. Give reason.

Last Answer : Ans. Solid < liquid < gas. This is because solid absorb energy to change into a liquid which further absorb energy to change into a gas.

Liquid oils can be converted to solid fats by (a) Hydrogenation (b) Saponification (c) Hydrolysis (d) Oxidation of double bonds

Description : Liquid oils can be converted to solid fats by (a) Hydrogenation (b) Saponification (c) Hydrolysis (d) Oxidation of double bonds

Last Answer : Hydrogenation

Which one of the following best defines the word “allotropes”? A Different structural forms of an element B A pair of substances that differ by H+ C Elements that possess properties intermediate between those of metals and nonmetals D Atoms of a given atomic number that have a specific number of neutrons E The different phases (solid, liquid or gas) of a substance

Description : Which one of the following best defines the word allotropes ? A Different structural forms of an element B A pair of substances that differ by H+ C Elements that possess properties intermediate between ... a specific number of neutrons E The different phases (solid, liquid or gas) of a substance

Last Answer : A Different structural forms of an element 

The critical temperature is the temperature: w) above which a substance cannot be vaporized x) at which the density is a minimum y) at which solid, liquid, and vapor are in equilibrium z) above which the substance cannot be liquified.

Description : The critical temperature is the temperature: w) above which a substance cannot be vaporized x) at which the density is a minimum y) at which solid, liquid, and vapor are in equilibrium z) above which the substance cannot be liquified.

Last Answer : ANSWER: Z -- ABOVE WHICH THE SUBSTANCE CANNOT BE LIQUIFIED. 

What is the name given to the temperature and pressure at which solid, liquid, and gas coexist for a pure material?

Description : What is the name given to the temperature and pressure at which solid, liquid, and gas coexist for a pure material?  

Last Answer : ANSWER: TRIPLE POINT

An emulsion is a colloidal solution of (1) Liquid in liquid (2) Solid in liquid (3) Gas in solid (4) Solid in Solid

Description : An emulsion is a colloidal solution of (1) Liquid in liquid (2) Solid in liquid (3) Gas in solid (4) Solid in Solid

Last Answer :  Liquid in liquid

A solution is (1) a homogeneous mixture of two or more substances (2) a solid dissolved in a liquid (3) a solid dissolved i water (4) a mixture of two liquids

Description : A solution is (1) a homogeneous mixture of two or more substances (2) a solid dissolved in a liquid (3) a solid dissolved i water (4) a mixture of two liquids 

Last Answer : a homogeneous mixture of two or more substances

Mercury is a : (1) solid metal (2) liquid metal (3) solid non-metal (4) liquid non-metal

Description : Mercury is a : (1) solid metal (2) liquid metal (3) solid non-metal (4) liquid non-metal

Last Answer : liquid metal

Glass is a (1) superheated solid (2) supercooled liquid (3) supercooled gas (4) superheated liquid

Description : Glass is a (1) superheated solid (2) supercooled liquid (3) supercooled gas (4) superheated liquid

Last Answer :  supercooled liquid

An emulsion is a colloid of a (1) gas in a liquid (2) liquid in a liquid (3) liquid in a gas (4) gas in a solid

Description : An emulsion is a colloid of a (1) gas in a liquid (2) liquid in a liquid (3) liquid in a gas (4) gas in a solid

Last Answer : liquid in a liquid

Smoke is formed due to (1) solid dispersed in gas (2) solid dispresed in liquid (3) gas dispresed in solid (4) gas dispersed in gas

Description : Smoke is formed due to (1) solid dispersed in gas (2) solid dispresed in liquid (3) gas dispresed in solid (4) gas dispersed in gas

Last Answer :  solid dispersed in gas

The substance which does not expand on going from liquid state to solid state is (1) Water (2) Cast-iron (3) Aluminium(4) Type metal

Description : The substance which does not expand on going from liquid state to solid state is (1) Water (2) Cast-iron (3) Aluminium(4) Type metal

Last Answer : Type metal 

Distinguish between solid fuel and liquid fuel.

Description : Distinguish between solid fuel and liquid fuel.

Last Answer : Property Solid Liquid 1.Calorific Value Low Higher 2.Ignition Temperature  Very high Moderate 3.Cost  Cheap Costly 4.Ash content High Negligible 5.Velocity of combustion Non controllable Easily Controllable

Briefly explain how an electrical generator converts mechanical energy into electrical energy

Description : Briefly explain how an electrical generator converts mechanical energy into electrical energy.

Last Answer : Working principle of DC generator: * Working principle of DC generator is the principle of dynamically induced emf or electromagnetic induction. * According to this principle, when flux is cut by a conductor, an ... , the flux is cut by the armature winding and an emf is dynamically induced in it. 

(4) Decomposition of manganese dioxide Explanation: One of the two chemical methods starts from natural manganese dioxide and converts it using dinitrogen tetroxide and water to manganese nitrate solution. Evaporation of the water leaves the crystalline nitrate salt. At temperatures of 400°C, the salt decomposes, releasing N2O4 and leaving a residue of purified manganese dioxide.

Description : (4) Decomposition of manganese dioxide Explanation: One of the two chemical methods starts from natural manganese dioxide and converts it using dinitrogen tetroxide and water to manganese nitrate ... 400°C, the salt decomposes, releasing N2O4 and leaving a residue of purified manganese dioxide.

Last Answer : The mass number of a nucleus is - (1) always less than its atomic number (2) the sum of the number of protons and neutrons present in the nucleus (3) always more than the atomic weight (4) a fraction

The enzyme that converts glucose to ethyl alcohol is – (1) invertase (2) Maltase (3) Zymase (4) Diastase

Description : The enzyme that converts glucose to ethyl alcohol is – (1) invertase (2) Maltase (3) Zymase (4) Diastase

Last Answer : (3) Zymase Explanation: The fermentation of sugar into ethanol is one of the earliest biotechnologies employed by humanity. Fermentation of fermentable sugars by suitable yeast produces ethanol (ethyl ... wine yeast, for example, contain zymase, an enzyme that can convert glucose to ethanol.

The enzyme that converts glucose to ethyl alcohol is : (1) Invertase (2) Maltase (3) Zymase (4) Diastase

Description : The enzyme that converts glucose to ethyl alcohol is : (1) Invertase (2) Maltase (3) Zymase (4) Diastase

Last Answer : Zymase

What is the name of the process where a solid turns into a liquid and then back into a solid?

Description : What is the name of the process where a solid turns into a liquid and then back into a solid?

Last Answer : A: Melting and freezing.

What is the name of the process where a liquid turns into a solid and then back into a liquid?

Description : What is the name of the process where a liquid turns into a solid and then back into a liquid?

Last Answer : A: Freezing and melting.

What is the name of the process where a liquid turns into a solid?

Description : What is the name of the process where a liquid turns into a solid?

Last Answer : A: Freezing.

What is the name of the process where a solid turns into a liquid?

Description : What is the name of the process where a solid turns into a liquid?

Last Answer : A: Melting.

How to turn liquid glycerin into solid?

Description : How to turn liquid glycerin into solid?

Last Answer : You can solidify the glycerin by making soap otherwise you can freeze them and heat it up when you want to use it.

How can you convert the liquid state of water into its solid state?

Description : How can you convert the liquid state of water into its solid state?

Last Answer : Freezing the water will turn it into solid ice.

What must happen for a solid to turn into a liquid?

Description : What must happen for a solid to turn into a liquid?

Last Answer : Feel Free to Answer