Class 10th science notes
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Network:π Analytical overview of Telegram channel Class 10th science notes
Channel Class 10th science notes (@class_10_science_notes) in the English language segment is an active participant. Currently, the community unites 27 457 subscribers, ranking 7 065 in the Education category and 15 163 in the India region.
π Audience metrics and dynamics
Since its creation on Π½Π΅Π²ΡΠ΄ΠΎΠΌΠΎ, the project has demonstrated rapid growth, gathering an audience of 27 457 subscribers.
According to the latest data from 08 July, 2026, the channel demonstrates stable activity. Although there has been a change in the number of participants by -550 over the last 30 days and by -6 over the last 24 hours, overall reach remains high.
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- Engagement rate (ER): The average audience engagement rate is 3.04%. Within the first 24 hours after publication, content typically collects 0.91% reactions from the total number of subscribers.
- Post reach: On average, each post receives 835 views. Within the first day, a publication typically gains 251 views.
- Reactions and interaction: The audience actively supports content: the average number of reactions per post is 1.
- Thematic interests: Content is focused on key topics such as cbse, chapter, sample, syllabus, pattern.
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Thanks to the high frequency of updates (latest data received on 09 July, 2026), the channel maintains relevance and a high level of publication reach. Analytics show that the audience actively interacts with content, making it an important point of influence in the Education category.
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π Very Very Important questions - 2025
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Science Case study based questions and Assertion and reason with Answers
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Question 1- Mention the type of chemical reaction that takes place and Write the chemical equation for each reaction when:
(i) A magnesium ribbon is burnt in air
(ii) Limestone is heated
(iii) Silver bromide is exposed to sunlight
(iv) Electricity is passed through acidified water
(v) Ammonia and hydrogen chloride are mixed with each other.
PYQ - 5 Marks
Answer 1- (i) When A magnesium ribbon is burnt in air 2Mg(s) + O2(g) β 2MgO(s): Combination Reaction (ii) When Limestone is heated CaCO3(s) β CaO(s) + CO2(g): Thermal Decomposition Reaction (iii) When Silver bromide is exposed to sunlight 2AgBr(s) β 2Ag(s) + Br2: Photolytic Decomposition Reaction (iv) When Electricity is passed through acidified water 2H2O(l) β 2H2(g) + O2(g): Electrolytic Decomposition reaction (v) When Ammonia and hydrogen chloride are mixed with each other. NH3(g) + HCl(g) β NH4Cl(s): Combination ReactionQuestion 2- Take 3 g of barium hydroxide in a test tube, now add about 2 g of ammonium chloride and mix the contents with the help of a glass rod. Now touch the test tube from outside. (i) What do you feel on touching the test tube? (ii) State the inference about the type of reaction occurred. (iii) Write the balanced chemical equation of the reaction involved.
PYQ - 3 Marks
Answer 2- (i) The test tube becomes cooler during the reaction because the reaction is endothermic (absorbs heat from surrounding). (ii) During the reaction, heat is absorbed. Hence, this reaction is an endothermic reaction. These reactions cause a cooling effect by lowering the temperature of their surroundings. (iii) The balanced chemical equation of the reaction involved is as follows: Ba(OH)2 + 2NH4Cl + Heat β BaCl2 + 2NH3 + 2H2Oο»Ώ Question 3 - a. How is zygote formed? b. State the function of placenta in the motherβs body. c. At what interval the egg is formed in human female ovary? d. Name two STDs caused by bacterial infection. e. Why is prenatal sex determination prohibited?
PYQ - 5 Marks
Answer 3- a. Zygote is formed by the fusion of male and female gamete. b. Placenta is a special tissue through which the developing embryo/foetus gets nutrition from motherβs blood. It also transports wastes of the embryo into motherβs blood. c. Ovulation releases mature ovum from β the ovary. It happens once during a menstrual cycle that is for roughly 28 days. d. STDs caused by bacterial infection are Gonorrhoea and Syphilis. e. Prenatal sex determination is misused and it may be the reason for female foeticide.π― If more such questions needed than give reaction to this post βοΈπ·π
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To burn natural gas, we need to supply some amount of heat. Which of the following is correct regarding burning of natural gas?
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When hydrogen sulphide gas is passed through a blue solution of copper sulphate, a black precipitate of copper sulphide is obtained, and the sulphuric acid so formed remains in the solution. The reaction is an example of a:
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In a double displacement reaction such as reaction b/w sodium sulphate solution & barium chloride solution
I. Exchange of atoms take place
II. Exchange of ions take place III. A precipitate is produced IV. An insoluble salt is produced correct option is:
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Science sample paper with solution - total 10 sample papers
https://acadpills.com/class-10-science-sample-papers-2024-25-with-solutions/
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