A fresh section was taken by a student but he was very disappointed because there were only few green and most colourless cells. Teacher provided a pink colour solution. The section was immersed in this solution and when observed it was much clearer. What is the magic?
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Complete the following : `Mg overset(("Air"))underset("heat")to underset([A])"colourless solid" overset("HCl")to underset([B])"colourless solution" ov
`Mg(s) overset(O_(2)(g))underset("heat")to underset([A])underset("Colourless solid")(MgO(s)) overset(HCI)to underset([B])underset("Colourless solution")(MgCl_(2)(aq)) overset(Na_(2)CO_(3))to underset([C])underset("White ppt.")(MgCO_(3)(s))overset("heat")to underset([D])underset("Colourless gass")(CO_(2)(g))overset(Ca(OH)_(2))to underset([E])underset("White ppt.")(CaCO_(3)(s))`
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While observing a slide, student observed many cells with nuclei. But some of the nuclei were bigger as compared to others
Answer is Prophase
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Students prepared a slide of onion root tip. There were many cells seen under microscope. There was a cell seen under microscope.
It is Anaphase.
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Which of the above-mentioned statements/s is/are TRUE? A. only 1 B. only 2 C. only 3 and 4 D. only 1, 2 and 4
D. only 1, 2 and 4
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In C4 plants, bundle sheath cells carrying out Calvin cycle are very few in number. Then also, C4 plants are highly productive. Explain.
1. C4 plants have special type of leaf anatomy called Kranz anatomy. 2. In C4 plants, CO2 fixation occurs twice. 3. In these plants, chloroplasts of mesophyll cells contain enzyme PEP carboxylase which...
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Give examples and explain with equations: (a)Two colourless solution give a black precipitate on mixing. (b)Two colourless solutions give a red precip
(a)Lead salt+sodium sulphide. `Pb(CH_(3)COO)_(2)+Na_(2)Stounerset("Black")(PbS)+2CH_(3)COONa` (b)`HgCl_(2)+2Kl to underset("Read")(Hgl_(2))+2KCl` `Hgl_(2)+2Kl to K_(2)Hgl_(4)` ( c)`AgNO_(3)+NaCl to underset("White ppt.")(AgCl)+NaNO_(3)` `AgCl+2NH_(4)OH to underset("soluble")(Ag(NH_(3))_(2)) Cl+2H_(2)O` (d)`Pb(NO_(3))_(2)+2Kl to underset("Yellow ppt.")(Pbl_(2)+2KNO_(3))`
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A white substance `(A)` reacts with dilute `H_(2)SO_(4)` to produce a colourless gas `(B)` and a colourless solution `( C)`.The reaction between `(B)`
Correct Answer - (A)`ZnS` ; (B)`H_(2)S` ; (C )`ZnSO_(4)` ; (D)`S` ; (E)`SO_(2)` `ZnS+H_(2)SO_(4)to ZnSO_(4) + H_(2)S` `Cr_(2)O_(7)^(2-) + 3H_(2)S+8H^(+) to 2Cr^(3+) ("green solution")+3S darr +7H_(2)O` `S+O_(2) to SO_(2) , 2H_(2)S...
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A wire of length L and 3 identical cells is now connected in series with a wire of the same material and cross-section but of length by the same amoun
`((3V)^(2))/(R)t=ms DeltaT` and `((NV)^(2))/(2R)t=2ms Deltat` `rArr(N^(2))/(4)=9` `rArr N^(2)=36rArrN=6`
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In an objective paper, there are two sections of 10 questions each.For "section 1", each question has 5 options and only one optionis correct and "sec
Correct Answer - D Let `p_(1)` be the probability of being an answer correct from section 1. Then `p_(1)=1//5.` Let `p_(2)` be the probability of being an answer correct from section...
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Plasma cells are derived from (A) Memory B-cells (B) Helper T-cells (C) Memory T-cells (D) Cytotoxic T-cells
Correct option is: (C) Memory T-cells
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