Answer Posted / akhila

this is a reaction of aminoacid with triketohydrindene
hydrate;
ninhydrin=indane-1,2,3-trione hydrate
it is a powerful oxidising agent and causes oxidative
decarboxylation of alpha aminoacids producing co2 ,nh3 and
an aldehyde with one less carbon atom than the parent amino
acid.
the reduced ninhydrin reacts with the liberated nh3 and a
mole of ninhydrin forming blue coloured ruheman's complex.
this is known as ninhydrin reaction.

Since pepsin is a gastric enzyme does it, has acid or basic optimum ph? What happen to pepsin when it passes to the duodenum?

997

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Define activation energy?

1055

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According to the watson – crick model how many polynucleotide chains does a dna molecule has?

993

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What is the ratio of slaked lime and sand in mortar?

1001

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What are some examples of chemical and physical changes?

957

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Glycolysis is A) C6H12O6 --> 2C2H5OH + 2CO2 B) C6H12O6 --> 2CH3H4O3 + 4H c) C3H4O3 + NAD --> C2H5OH + CO2 NAD D) C6H12O6 + 6H20 --> 6CO2 + 6H2O

3123

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How do you call fifth, ‘a’ group elements collectively?

1059

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What are some factors that can lead to protein denaturizing?

1016

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Aldehydes and ketones characteristically undergo which reactions?

967

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What is nucleophilic addition reaction?

1110

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In 3d-series, which two elements exhibit an anomalous configuration?

1032

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What is lattice energy?

1137

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Which is element exhibit allotrope in the 6tha group?

1046

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Give the chemical formula for Borax?

1117

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How are reaction rates dependent upon free energy changes?

2315

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