Chemistry Class 10 CBSE Syllabus Topics

List four life-processes that are essential for maintaining life.

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Why does the colour of iron sulphate solution fade when a piece of zinc is dipped in it ? Give chemical equation for the reaction involved.

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What is a balanced chemical equation ? Why do we balance chemical equations ?

Students Community, 11 months ago

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Name two olfactory indicators?

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What is hydrolysis of salt?

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What are the chemical properties of metals?

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Why is sodium kept immersed in kerosene oil?

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How will you compare the relative strengths of two acids?

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Why is chlorine water used as reagent in chemistry laboratory stored in brown colour bottles?

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What is alkali?

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What happen when nitric acid is added to an eggshall? Justify your answer.

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Name the gas in air which tarnishes silver articles slowly?

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Why does micelle formation take place when soap is added to water? Will a micelle be formed in other solvents like ethanol?

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State two achievement of the law of Octaves.

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Why does dry HCI gas not change the colour of dry litmus paper?

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How does an aqueous solution of an acid conduct electricity?

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Fresh milk has a pH of 6. How does its pH change as it turns into curd

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pH has a great importance in our daily life.? Explain by giving three example.

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What is neutralisation reaction? Give two example.

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How would you distinguish between baking powder and washing soda by heating?

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How will you compare the relative strength of bases?

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What is rusting?

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What are the Homologous series?

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What are the organic compounds?

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What are antioxidants?

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Define an endothermic process?

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What is an indicator?

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What is mineral?

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What is element?

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What are the metals?

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Name the salt which is used as a preservative in pickles and in curing meat and fish?

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Two solution have pH values of 2 and 6 respectively; which is a stronger acid?

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What is the pH of blood and pure water?

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What is octet?

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Give the name and structural formula of the next homologue of HCOOH?

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Name any two structures which are gradually damaged by the corrosion of iron.

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In the modern periodic table, which are the metals among the first ten elements?

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What were the limitation of Newland's Law of Octaves?

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Write the name and molecular formula of alcohol which can be though to be derived from pentane?

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What were the criteria used by mendeleev in creating his periodic table?

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Define an acid?

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What is the role of water in litmus test of an acid?

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Write the reaction of hydration of ethene.

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Name two elements whose existence was predicated by Mendeleev?

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State two achievement of the law of triads was rejected?

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How is acetic acid prepared from ethanol?

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How many covalent bonds are present between nitrogen and hydrogen atoms in ammonia molecule?

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Why is the electrolysis of brine called chlor-alkali process?

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Give chemical formula of soda ash.

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Name the major salt present in sea water?

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