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All Boards Matric 10th Class Chemistry Guess Paper 2018

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Matric 10th Class Chemistry Guess Paper & Model Paper 2018matric 10th class chemistry guess paper 2015 free download

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Chemistry Guess Paper Class 10th 2018 Short Questions:

  • Give importance of equilibrium constant.
  • What is a Static equilibrium? Explain with an example.
  • How can you know that a reaction has achieved an equilibrium state?
  • Write equilibrium constant expression for the reaction. H2 + 12 Fa 2HI
    Write equation of forward reaction between hydrogen and iodine.
  • Define hydrogenation. Give an example.
  • How bleaching powder reacts with hydrogen peroxide?
  • Describe the physical properties of sodium hydrogen carbonate.
  • Write uses of hydrogen acid.
  • Write down the uses of hydrogen peroxide.
  • How hydrogen bonding enables water to dissolve different substances?
  • Give process of hydrogenation of alkenes with chemical equation.
  • What is hydrogenation reaction? Give chemical equation.
  • Write down any two uses of pH.
  • How can we measure pH of a solution?
  • Define pH. What is the pH of pure water?
  • Why pure water is not a strong electrolyte?
  • Find the pH of .001 M solution of KOH.
  • Which salts are responsible for hardness of water?
  • Why salt is neutral? Explain with an example.
  • What are acidic salts? Write one chemical equation of their reaction with bases.
  • Write condensed formula of any two hydro carbons.
  • Write names of any two methods of preparation of salts.
  • Give the reactions of chlorine with hydro carbons.
  • What are closed chain hydrocarbons? Give two examples.
  • What are saturated and unsaturated hydrocarbon, give example?
  • Why are hydrocarbons considered as parent organic compounds?
  • How hydro carbons act as fuel?
  • Give difference between saturated and unsaturated hydro carbon.
  • Write the names and general formulas of unsaturated hydro carbons.
  • Give two uses of Methane.
  • What are cyclic and acyclic compounds?
  • What happens when methane is treated with chlorine in the presence of bright sunlight?
  • How are alkyl halides reduced?
  • What is Dehydrohalogenation of Alkyl Halides?
  • Write sources of vitamins A and D.
  • Write names of water soluble vitamins.
  • Justify water soluble vitamins are not injurious to health.
  • What are Fat Soluble Vitamins? Write their examples.
  • Write down diseases bom by the deficiency of vitamin A
    Write uses of Vitamin-D.
  • Write the names and formulae of two fatty adds.
  • What are fatty acids? Give one example.
  • What is Ribonucleic Add (RNA)?
  • What do DNA and RNA stand for?
  • What is RNA? Write its function.
  • Differentiate between atmosphere and environment.
  • What is the function of DNA?
  • Give the name of different layers of atmosphere around the earth.
  • How C02 is responsible for heating up atmosphere?
  • How is the temperature of atmosphere maintained?
  • What threats are to human health due to S02 gas as air pollutant?
  • What is air pollutant? Give example of primary and secondary air pollutants.
  • How indneration of waste material causes air pollution?
  • How can we remove the hardness from water.
  • What are two effects of water pollution?
  • Write types of hardness of water.
  • Describe the difference between temporary and permanent hardness of water.
  • How is hardness of water removed by Clark s method?
  • What are Fertilizers?
  • Write two disadvantages of hard water.
  • What is function of fertilizer?
  • What is an industrial waste?
  • How nitrogen is separated from oxygen during industrial preparation of nitrogen?
  • Name two acids used in the manufacture of fertilizers.
  • How are oxides from nitrogen formed in internal combustion engine? Write chemical equatior
    Give equations for the reaction of chlorine with metals.
  • What process are involved in extraction of metal?
  • How extraction of metal takes place from the concentrated ore?
  • What is meant by electromagnetic separation?
  • Write electromagnetic separation process.
  • How ammonia (NH3)is prepared by Haber’s process?
  • Give the reaction of formation of Ammonia in the process in the form of equation.
  • How Ammonia is recovered in the Solvay s process?
  • Why Urea is an important compound?
  • How ammonia is prepared for the synthesis of urea?
  • Write raw materials for manufacturing urea.
  • What is the ralationship between active mass and rate of reaction?
  • Define Law of Mass Action.
  • Describe the difference between Forward Reaction and Reverse Reaction.
  • Define reversible reaction.
  • Define reversible and irreversible reactions.
  • Write down the names of two natural acids and their sources.
  • How conjugate acids and conjugate bases are formed?
  • Write physical properties of acids.
  • What is natural gas?
  • What is the importance of natural gas?
  • Which gas is dissolved in soda water drinks?
  • Write down the uses of Sodium Chlorate.
  • How detergents pollute water?
  • At which electrode chlorine is obtained in electrolysis of sodium chloride? Write equation.
    Write any four uses of bases.
  • How sodium hydroxide is prepared commercially?
  • Describe limitations of Arrhenius concept of acids and bases.
  • All alkalies are bases but all bases are not alkalies. Explain why?
  • Define functional group and give one example.
  • What is Closed Chain? Write the name of its types.
  • What is meant by carboxyl functional group? Explain with an example.
  • Give two uses of Ethyne.
  • How we can prepare Ethyne by dehydrohalogenation of vicinal Dihalides?
  • What is difference between Oil and Ghee?
  • How oxygen is converted into ozone present in stratosphere? Give chemical reaction only.
    Where Ozone is found?
  • How ozone layer is formed in the stratosphere?
  • Ozone is beneficial for human life Justify.
  • Write down the sources of oxides of carbon.
  • Give two serious effects of Ozone depletion.
  • What do you mean by water as solvent?
  • Write two unique properties of water that makes it a universal solvent.
  • Why is water considered a universal solvent?
  • What are Boiler Scales? How these are abolished?
  • Why pesticides are used?
  • What do you mean by boiler scale? How are they removed?
  • What is gangue?
  • Write the uses of Fuel Oil.
  • Define gangue and metallurgy.
  • Describe any two characteristics of acids.
  • Write physical properties of acid.
  • How is acid rain produced?
  • Why Fr ion acts as a Lewis acid?
  • Write the general formula of amino add?
  • Why acid rain damages buildings?
  • What is difference between Lewis acid and Base?
  • Give difference between essential and non-essential amino acids.
  • How acid rain increases the acidity of soil?
  • What are limitations of Arrhenius concept?
  • Why BF3 behaves as Lewis acid?
  • What is meant by catenation?
  • What are alkynes? Give its general formula.
  • What is isomerism? Give an example.
  • Why Orchids produce alkanes?
  • How carbohydrates act as source of energy?
  • Define carbohydrates, write their general formula.
  • Describe the uses of carbohydrates.
  • Name any two sources of lipids and write their uses.
  • Write down two uses of lipids.
  • Write two uses of proteins.
  • What is the difference between biodegradable and non biodegradable substances?
    How are proteins formed?
  • How can be protected by water borne diseases?
  • What are the reasons of water borne diseases?
  • What are water borne diseases of water?
  • How roasting is carried out?
  • Write the two chemical properties of water.
  • How NaHC03 is converted to Na2C03?
  • Which two generalizations can be made about direction of chemical reaction?
  • What is reduction reaction? Give chemical equation.
  • Write the chemical formulas of palmitic acid and stearic acid.
  • What are organic compounds?
  • What are inorganic compounds?
  • How organic compounds can be used as food?
  • Describe the combustion process with equation.
  • What is the difference between glucose and fructose?
  • Write the structure formulae of glucose and fructose.
  • How is CO considered a health hazard?
  • How do detergents affect the aquatic life?
  • Write down the disadvantages of detergents.
  • How atmospheric carbon dioxide and water react with bleaching powder?
  • Describe the physical properties of bleaching powder.
  • Write equations in which chlorine is sued as bleaching agent.
  • Write down the reactions of water and oxygen with ethane.
  • Describe Bromine Water Test.
  • Why colour of bromine water discharges on addition of ethane in it?
  • Write down two properties of water.
  • How chlorine reacts with water? Write equations.
  • Give any four physical properties of water.
  • What are the advantages of sterilized water?
  • How water rises in plants? OR How does lime stone dissolve in water?
  • Which raw materials are required in Solvays process?
  • Prove that water is an amphoteric specie.
  • Write two advantages of Solvay’s process.
  • Describe froth flotation process.
  • What is the principle of Solvay s process?
  • What is the role of pine oil in the froth flotation process?
  • Write down two uses of ethene.
  • What are the major constituents of troposphere?
  • What do you mean by genetic code of life?
  • What are addition reactions? Give example.
  • How petroleum is formed?
  • Define petroleum.
  • Write the composition and uses of diesel oil.
  • What is meant by triglycerides? Write its general formula.
  • Which compounds are called Ketones?
  • Write the major sources of CO and C02 emission.
  • What is principle of fractional distillation?
  • What is difference between hepatitis and jaundice?
  • Define minerals.
  • What do you mean by calcination?
  • What is difference between Minerals and Ores?
  • What is ether linkage?
  • Write down the uses of silicon dioxide.
  • What is a silicon chip?
  • How can hydrated silicon dioxide be obtained?
  • Explain the strength of covalent bonds of carbon.
  • Why does “silicon” occur in the form of silica and silicate?
  • Define polysaccharides and give one example.
  • What is meant by gravity separation?
  • Give the characteristics of polysaccharides.
  • Enlist the names of fractions of residual oil.
  • What are amorphous forms of carbon?
  • What is the difference between crude oil and residual oil?
  • Write the names of allotropic forms of carbon.
  • What is carbon black?
  • How can you test carbon dioxide?
  • Carbon belongs to which group and what is its valence?
  • What is arrangement of electrons in a sulphur atom?
  • What do you know about the structure of bucky balls?
  • What is the relationship between rhombic and monoclinic sulphur?
  • Describe the properties of rhombic sulphur.
  • Write down the uses of reaction of sulphur with copper.
  • What are indicatars? name any two indicators.
  • What are nudeic acids? Write names of two nucleic acids.
  • Define structural formula with an example.
  • State process of incineration.
  • Write uses of sulphuric acid.
  • Write uses of atmospheric gases in the manufacture of chemicals.
  • Why sulphuric add is dibasic? Write down chemical reactions also.
  • What are heterocyck compounds? Give example.
  • Why sulphuric add behaves as a dehydrating agent?
  • What is fluorosis?
  • What is the basic building unit of silica?
  • Give the balanced equation for the hydrolysis of sucrose.
  • What is olvine? Write its chemical formula.
  • Give names of different type of oxide.
  • Give two chemical properties of nitric acid.
  • What is hydration.

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