Guess Paper Chemistry 10th Class 2017
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موسٹ امپورٹنٹ سوالات کے لیا سائٹ پیپر سے کچھ دن پھیلے بی چیک کریں: شکریہ
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Chemistry Guess Paper Class 10th 2017 Short Questions
Give importance of equilibrium constant. OR How can you know that a reaction has achieved an equilibrium state? OR What is a Static equilibrium? Explain with an example. OR Write equilibrium constant expression for the reaction. H2 + 12 Fa 2HI
Define hydrogenation. Give an example. OR Write equation of forward reaction between hydrogen and iodine. OR How bleaching powder reacts with hydrogen peroxide? OR Write uses of hydrogen acid OR Describe the physical properties of sodium hydrogen carbonate. OR Write down the uses of hydrogen peroxide. OR Give process of hydrogenation of alkenes with chemical equation. OR How hydrogen bonding enables water to dissolve different substances? OR What is hydrogenation reaction? Give chemical equation.
How can we measure pH of a solution? OR Write down any two uses of pH. OR Define pH. What is the pH of pure water? OR Find the pH of .001 M solution of KOH.
Why pure water is not a strong electrolyte?
Why salt is neutral? Explain with an example. OR Which salts are responsible for hardness of water? OR What are acidic salts? Write one chemical equation of their reaction with bases. OR Write names of any two methods of preparation of salts.
Write condensed formula of any two hydro carbons. OR Give the reactions of chlorine with hydro carbons. OR What are saturated and unsaturated hydrocarbon, give example? OR What are closed chain hydrocarbons? Give two examples. OR Why are hydrocarbons considered as parent organic compounds? OR Give difference between saturated and unsaturated hydro carbon. OR How hydro carbons act as fuel? OR Write the names and general formulas of unsaturated hydro carbons.
What are cyclic and acyclic compounds?
Give two uses of Methane. OR What happens when methane is treated with chlorine in the presence of bright sunlight?
What is Dehydrohalogenation of Alkyl Halides? OR How are alkyl halides reduced?
Write names of water soluble vitamins. OR Write sources of vitamins A and D. OR Justify water soluble vitamins are not injurious to health. OR Write down diseases born by the deficiency of vitamin A. OR What are Fat Soluble Vitamins? Write their examples. OR Write uses of Vitamin-D.
What are fatty acids? Give one example. OR Write the names and formulae of two fatty acids
What do DNA and RNA stand for? OR What is Ribonucleic Acid (RNA)? OR What is RNA? Write its function. OR What is the function of DNA?
Differentiate between atmosphere and environment. OR Give the name of different layers of atmosphere around the earth. OR How is the temperature of atmosphere maintained? OR How CO2 is responsible for heating up atmosphere?
What is air pollutant? Give example of primary and secondary air pollutants. OR What threats are to human health due to SO2 gas as air pollutant? OR How incineration of waste material causes air pollution? OR What are two effects of water pollution?
How can we remove the hardness from water. OR Write types of hardness of water. OR Describe the difference between temporary and permanent hardness of water. OR How is hardness of water removed by Clark’s method? OR Write two disadvantages of hard water.
What are Fertilizers? OR What is function of fertilizer? OR Name two acids used in the manufacture of fertilizers.
What is an industrial waste? OR How nitrogen is separated from oxygen during industrial preparation of nitrogen? OR How are oxides fron, nitrogen formed in internal combustion engine? Write chemical equation.
What process are involved in extraction of metal? OR Give equations for the reaction of chlorine with metals. OR How extraction of metal takes place from the concentrated ore?
Write electromagnetic separation process. OR What is meant by electromagnetic separation?
Give the reaction of formation of Ammonia in the process in the form of equation. OR How ammonia (NH3)is prepared by Haber’s process? OR How Ammonia is recovered in the Solvay’s process? OR How ammonia is prepared for the synthesis of urea?
Why Urea is an important compound? OR Write raw materials for manufacturing urea.
Define Law of Mass Action. OR What is the ralationship between active mass and rate of reaction?
Describe the difference between Forward Reaction and Reverse Reaction. OR Define reversible and irreversible reactions. OR Define reversible reaction.
Write down the names of two natural acids and their sources. OR Write physical properties of acids. OR How conjugate acids and conjugate bases are formed?
What is the importance of natural gas? OR What is natural gas? OR Which gas is dissolved in soda water drinks? OR How detergents pollute water?
Write down the uses of Sodium Chlorate. OR At which electrode chlorine is obtained in electrolysis of sodium chloride? Write equation. OR How sodium hydroxide is prepared commercially?
Write any four uses of bases. OR Describe limitations of Arrhenius concept of acids and bases.
All alkalies are bases but all bases are not alkalies. Explain why?
What is Closed Chain? Write the name of its types.
Define functional group and give one example. OR What is meant by carboxyl functional group? Explain with an example.
How we can prepare Ethyne by dehydrohalogenation of vicinal Dihalides? OR Give two uses of Ethyne.
What is difference between Oil and Ghee?
Where Ozone is found? OR How oxygen is converted into ozone present in stratosphere? Give chemical reaction only. OR How ozone layer is formed in the stratosphere? OR Ozone is beneficial for human life Justify. OR Give two serious effects of Ozone depletion.
Write down the sources of oxides of carbon.
What do you mean by water as solvent? OR Why is water considered a universal solvent? OR Write two unique properties of water that makes it a universal solvent.
What are Boiler Scales? How these are abolished? OR What do you mean by boiler scale? How are they removed?
Why pesticides are used?
What is gangue? OR Define gangue and metallurgy.
Write the uses of Fuel Oil.
Write physical properties of acid. OR Describe any two characteristics of acids. OR How is acid rain produced? OR Write the general formula of amino acid? OR Why Fr ion acts as a Lewis acid? Why acid rain damages buildings? OR Give difference between essential and non-essential amino acids. OR What is difference between Lewis acid and Base? OR How acid rain increases the acidity of soil? OR Why BF3 behaves as Lewis acid?
What are limitations of Arrhenius concept?
What is meant by catenation?
What is isomerism? Give an example.
What are alkynes? Give its general formula.
Why Orchids produce alkanes?
Define carbohydrates, write their general formula. OR How carbohydrates act as source of energy? OR Describe the uses of carbohydrates.
Write down two uses of lipids. OR Name any two sources of lipids and write their uses.
Write two uses of proteins. OR How are proteins formed?
What is the difference between biodegradable and non biodegradable substances?
How can be protected by water borne diseases? OR What are water borne diseases of water? OR What are the reasons of water borne diseases?
How roasting is carried out?
How NaHCO3 is converted to Na2CO3?
Write the two chemical properties of water.
Which two generalizations can be made about direction of chemical reaction?
Write the chemical formulas of palmitic acid and stearic acid.
What is reduction reaction? Give chemical equation.
What are organic compounds? OR How organic compounds can be used as food? OR What are inorganic compounds?
Describe the combustion process with equation.
Write the structure formulae of glucose and fructose. OR What is the difference between glucose and fructose?
How is CO considered a health hazard?
Write down the disadvantages of detergents. OR How do detergents affect the aquatic life?
How atmospheric carbon dioxide and water react with bleaching powder? OR Write equations in which chlorine is sued as bleaching agent. OR Describe the physical properties of bleaching powder.
Write down the reactions of water and oxygen with ethane. OR Why colour of bromine water discharges on addition of ethane in it? OR Describe Bromine Water Test.
Write down two properties of water. OR Give any four physical properties of water.
How chlorine reacts with water? Write equations. OR What are the advantages of sterilized water?
How water rises in plants? OR How does lime stone dissolve in water? OR Prove that water is an amphoteric specie.
Which raw materials are required in Solvay’s process? OR Write two advantages of Solvay’s process. OR What is the principle of Solvay’s process?
Describe froth flotation process. OR What is the role of pine oil in the froth flotation process?
Write down two uses of ethene.
What do you mean by genetic code of life?
What are the major constituents of troposphere?
What are addition reactions? Give example.
Define petroleum. OR How petroleum is formed?
Write the composition and uses of diesel oil.
Which compounds are called Ketones?
What is meant by triglycerides? Write its general formula.
Write the major sources of CO and CO2 emission.
What is difference between hepatitis and jaundice?
What is principle of fractional distillation?
Define minerals. OR What is difference between Minerals and Ores?
What do you mean by calcination?
What is ether linkage?
What is a silicon chip? OR Write down the uses of silicon dioxide. OR How can hydrated silicon dioxide be obtained? OR Why does “silicon” occur in the form of silica and silicate?
Explain the strength of covalent bonds of carbon.
Define polysaccharides and give one example. OR Give the characteristics of polysaccharides.
What is meant by gravity separation?
Enlist the names of fractions of residual oil. OR What is the difference between crude oil and residual oil?
What are amorphous forms of carbon? OR Write the names of allotropic forms of carbon. OR How can you test carbon dioxide? OR What is carbon black? OR Carbon belongs to which group and what is its valence? OR What do you know about the structure of bucky balls?
What is arrangement of electrons in a sulphur atom? OR What is the relationship between rhombic and monoclinic sulphur? OR Write down the uses of reaction of sulphur with copper. OR Describe the properties of rhombic sulphur.
What are indicatars? name any two indicators.
Define structural formula with an example.
What are nucleic acids? Write names of two nucleic acids.
State process of incineration.
Write uses of atmospheric gases in the manufacture of chemicals.
Write uses of sulphuric acid. OR Why sulphuric acid is dibasic? Write down chemical reactions also. OR Why sulphuric acid behaves as a dehydrating agent?
What are heterocyck compounds? Give example.
What is fluorosis?
Give the balanced equation for the hydrolysis of sucrose.
What is the basic building unit of silica?
What is olvine? Write its chemical formula.
Give two chemical properties of nitric acid.
Give names of different type of oxide.
What is hydration%