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Assertion : Large Concave Mirrors Are Used To Concentrate Sunlight Reason : Concave Mirror Converges The Light Rays Falling On It To A Point.
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Two Thin Lenses Of Power 3D And -2D Are Placed In Contact,
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An Object Of Height 8 Cm Is Placed At A Distance Of 40cm Infront Of A Convex Lens Of Focal Length 20cm. The Size Of Image Is
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You Are Given Water, Mustard Oil, Glycerine And Kerosene.
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Beams Of Light Are Incident Through The Holes A And B And Emerge Out Of Box Through The Holes C And D Respectively As Shown In The Figure.
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A Light Ray Enters From Medium A To Medium B As Shown In The Figure.
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Figure Shows A Ray Of Light As It Travels From Medium A To Medium B.
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Bacteria Have A Simpler Body Plan When Compared With Human Beings.
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Evolution Has Exhibited A Greater Stability Of Molecular Structure When Compared With Morphological Structures.
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Does Geographical Isolation Of Individuals Of A Species Lead To Formation Of A New Species? Provide A Suitable Explanation.
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What Are Homologous Structures? Give An Example.
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Does Genetic Combination Of Mothers Play A Significant Role In Determining The Sex Of A Newborn?
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Study The Following Cross And Showing Self-pollination In F1, Fill In The Blank And Answer The Questions That Follows.
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Nervous And Hormonal Systems Together Perform The Function Of Control And Coordination In Human Beings. Justify The Statement.
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Some Situations In Our Day To Day Life Require Quick Response From Our Body. Or What Are Reflex Actions? Give Two Examples. Explain A Reflex Arc.
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If Iodine Is Insufficient In Ones Diet, What Might Be The Deficiency Disease? Or What Will Happen If Intake Of Iodine In Our Diet Is Low?
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Answer The Following (i) Which Gland Secretes Digestive (ii) Name The Endocrine Gland (iii) Which Endocrine Gland Is Present
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Why Is The Flow Of Signals In A Synapse From Axonal End Of One Neuron To Dendritic End Of Another Neuron, But Not The Reverse?
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Draw The Diagram Of A Flower And Label The Four Whorls. Write The Names Of Gamete Producing Organs In The Female.
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Why Are Budding, Fragmentation And Regeneration All Considered As Asexual Types Of Reproduction?
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Reproduction Is Essentially A Phenomenon That Is Not For The Survival Of An Individual, But For The Stability Of A Species. Justify
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What Changes Are Observed In The Uterus Subsequent To Implantation Of Young Embryo?
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