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plz answer with reasons.......
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What is the order of ease of heterolysis of following t-butyl compound
(CH3)3C - OH (CH3)3C - OAc (CH3)3C - Cl
(I) (II) (III) |
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In unstable or unpredictable environments r-selection predominates, as the ability to reproduce quickly is crucial, and there is little advantage in adaptations that permit successful competition with other organisms, because the environment is likely to change again. Traits that are thought to be characteristic of r-selection include: high fecundity, small body size, early maturity onset, short generation time, and the ability to disperse offspring widely. Organisms whose life history is subject to r-selection are often referred to as r-strategists or r-selected. Organisms with r-selected traits range from bacteria and diatoms, through insects and weeds, to various semelparous cephalopods and mammals, especially small rodents. [Source-Wikipedia]
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NH4OH will furnish OH- and so H+ will be removed. So reacn. proceeds in forward direction and so the conc. of S-- should increase.
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no they are not d same.although both are for excretion. Organ of bojanus is actually the kidney of molluscs. Keber's organ is another organ for excretion.
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1. color blindness, 2. Bile salts, 3. Taenia
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contraction of gall bladder- cholecystokinin........chromosome theory- Sutton n Boveri
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yes the answer is gibberellins.
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Earthquakes generate sound waves inside the earth. The earth can experience both transverse(S) and longitudinal(P) sound waves. Typically the speed of S is abt. 4km/s and that of P is 8 km/s. A seismograph records P and S waves from an earthquake. The first P wave arrives 4 min. before the first S wave. At what distance does the earthquake occur?
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in case of tetanus Anti Tetanus Serum is given for immediate immunity. it is actually blood serum which contains preformed antibodies.
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it is bcoz both both II and IV group radicals are precipitated as sulphides by H2S.
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CAo bcoz it is a basic oxide. BeO is amphoteric and SiO2 , B2O3 are acidic
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i think option b) is correct.
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it is a cha. of hydrophytes.
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the outer hypertonic solution is present between the space.
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peripatus is the c.l between annelida n arthropoda. annelid cha.- worm like body, unjointed stumpy and hollow legs, segmentally arranged nephridia. arthropod cha.- antennae, haemocoel forms the open circulatory system,tracheae.
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yes here T refers to thymus bcoz these lymphocytes though produced in bone marrow but attain their specialisation in thymus gland.
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ya sorry...it is 10^-8.....[Ba2+] = S' , [OH-] = S' + 10^-2 now apply Ksp = (2S' + 10-2)2 (S').......omit the S2 and S3 terms as they are very small. u will get 10^-8
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