Recent Questions
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A Concave Lens Made Of A Material Of Refractive Index
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A Concave Mirror Of Focal Length F Can Form A Magnified, Erect As Well As An Inverted Image Of An Object Place In Front Of It.
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Why Is It More Appropriate To Compare The Process Of Evolution With Branches Of A Tree Rather Than With A Ladder?
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Name Any Five Vegetables Generated From A Common Ancestor Through Artificial Selection Rather Than Natural Selection.
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(i) Identify The Organisms A And B (ii) How Will An Organism Be Benefitted (iii) Mention The Two Asexual Methods By Which Hydra Can Reproduce.
CBSE DiscussionsModified 26 Days 4 Hour 44 Minutes Ago
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What Is Placenta? Describe Its Structure. State Its Functions In Case Of Pregnant Human Female.
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(i) Name The Parts A To E Of Human Female Reproductive System. (ii) Name The Part In Which Fertilisation Takes Place In This System?
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How Can Preganancy Be Prevented Surgically?
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What Is Translocation? Why Is It Essential For Plants?
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The Electronic Configuration Of An Element X Is 2, 8, 8, 2.
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Atomic Radii Of The Elements Of The Second Period Are Given Below
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The Elements Li, Na And K Each Having One Valence Electron, Are In Periods 2, 3 And 4 Respectively Of Modern Periodic Table
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Lithium Is An Alkali Metal With Atomic Number = 3 And Number Of Valence Electron Is 1.
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The Following Table Shows The Positions Of Four Elements A, B, C And D In The Periodic Table
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An Element Has Same Number Of Electrons In I And IV Shells And In The II And III Shells
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(i) An Element X Has Both The Shells (ii) In Which Group Of The Periodic Table (iii) Write Its Electronic Configuration
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(i) How Does Electronic Configuration Of An Atom (ii) Which Element Has A Total Of Three Shells
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Which Of The Following Elements Belong To (i) Same Period? (ii) Same Group Explain Giving Reason.
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Atomic Number Of Three Elements X,Y And Z Are Given Below
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Modified 32 Days 3 Hour 7 Minutes Ago
