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divas goyal
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State Right Hand Thumb rule to find the direction of the magnetic
By divas goyal in 23 Sep 2023 | 11:39 am
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What are magnetic field lines? Justify the following statements: (a) Two magnetic field lines never intersect each other. (b) Magnetic field are closed curves.
By divas goyal in 23 Sep 2023 | 11:39 am
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Design an activity to demonstrate that a bar magnet has a magnetic field around it.
By divas goyal in 23 Sep 2023 | 11:39 am
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Draw magnetic field lines around a bar magnet. Name the device which is used to draw magnetic field lines.
By divas goyal in 23 Sep 2023 | 11:38 am
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"(a) (i) Write two properties of gold which make it the most suitable metal
By divas goyal in 23 Sep 2023 | 11:38 am
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"(i) By the transfer of electrons, illustrate the formation of bond in magnesium
By divas goyal in 23 Sep 2023 | 11:38 am
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"A metal ‘X’ combines with a non-metal ‘Y’ by the transfer of electrons to form
By divas goyal in 23 Sep 2023 | 11:38 am
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Why does calcium start floating when it reacts with water? Write the balanced chemical equation of the reaction. (b) Name two metals which do not react with water.
By divas goyal in 23 Sep 2023 | 11:37 am
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"Compare in tabular form the reactivities of the following metals with cold and hot water: (a) Sodium (b) Calcium (c) Magnesium "
By divas goyal in 23 Sep 2023 | 11:37 am
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Complete the following equation with balancing: (i) Al + HCl → (ii) Mg + HNO3 →
By divas goyal in 23 Sep 2023 | 11:37 am
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What is meant by amphoteric oxides? Choose the amphoteric oxides from the following : Na2O, ZnO, CO2, Al2O3, H2O
By divas goyal in 23 Sep 2023 | 11:37 am
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Reverse of the following chemical reaction is not possible: Zn(s) + CuSO4(aq) → ZnSO4(aq) + Cu(s) Justify this statement with reason
By divas goyal in 23 Sep 2023 | 11:37 am
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Give reasons: (a) Ventricles have thicker muscular walls than atria
By divas goyal in 23 Sep 2023 | 11:36 am
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List in tabular form three differences between arteries and veins
By divas goyal in 23 Sep 2023 | 11:36 am
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Explain how the translocation of materials in phloem tissue in plants is achieved by utilising energy.
By divas goyal in 23 Sep 2023 | 11:36 am
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Explain the significance of photosynthesis. Write the balanced chemical equation involved in the process.
By divas goyal in 23 Sep 2023 | 11:36 am
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(a) State the law that is followed by balancing a chemical equation. (b) Balance the following chemical equation: Na + H3O → NaOH + H2
By divas goyal in 23 Sep 2023 | 11:35 am
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Write three types of blood vessels. Give one important feature of each
By divas goyal in 23 Sep 2023 | 11:29 am
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Define translocation in reference to plants.
By divas goyal in 23 Sep 2023 | 11:29 am
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Name the vein which brings blood to left atrium from lungs
By divas goyal in 23 Sep 2023 | 11:28 am
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Which one of the following statements is correct about the human circulatory
By divas goyal in 23 Sep 2023 | 11:28 am
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Draw a flow chart to show the breakdown of glucose by various pathways
By divas goyal in 23 Sep 2023 | 11:27 am
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Write three points of difference between breathing and respiration.
By divas goyal in 23 Sep 2023 | 11:25 am
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Write two different ways in which glucose is oxidised to provide energy in human body. Write the products formed in each case
By divas goyal in 23 Sep 2023 | 11:25 am
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Diffusion is insufficient to meet the oxygen requirement of multicellular organisms like human. State reason
By divas goyal in 23 Sep 2023 | 11:25 am
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Explain with the help of neat and well labelled diagrams the different steps involved in nutrition in Amoeba.
By divas goyal in 23 Sep 2023 | 11:25 am
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