Matric Chemistry Guess 2021
- 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 born by the deficiency of vitamin A.
- Write uses of Vitamin-D.
- Write the names and formulae of two fatty acids.
- What are fatty acids? Give one example.
- What is Ribonucleic Acid (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 CO2 is responsible for heating up atmosphere?
- How is the temperature of atmosphere maintained?
- What threats are to human health due to SO2 gas as air pollutant?
- What is air pollutant? Give example of primary and secondary air pollutants.
- How incineration 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 fron, nitrogen formed in internal combustion engine? Write chemical equation.
- 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 acid?
- 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 NaHCO3 is converted to Na2CO3?
- 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 Solvay’s 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 CO2 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 nucleic 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 acid is dibasic? Write down chemical reactions also.
- What are heterocyck compounds? Give example.
- Why sulphuric acid 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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