Why does cut apple turn brown when exposed to air?
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You belong to a generation that has been exposed to internet. Discuss how internet has brought about positive and negative results.
Modern technological advancements have strengthened and changed the role of mass media as an agent of socialization. Technology like internet has certainly increased the spread of mass media. People spend...
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What happens when: (write chemical equations only ) (a) Anhydrous `AlCl_(3)` is exposed to atmosphere. (b) `AlCl_(3)` dissolves in aqueous sodium hydr
(a)`AlCl_(3)+3H_(2)OtoAL(OH)_(3)+3HCl , (HCl` fumes in air). (b)`AlCl_(3)+3NaOH to AL(OH)_(3)darr+3NaCl` `Al(OH)_(3)+OH^(-)to[Al(OH)_(4)]^(-)`
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A one litre flask is full of reddish brown bromine fumes.The intensity of brown colour of vapour will not decrease appreciably on adding to the flask
Correct Answer - A Marble `(CaCO_(3))` do not react, adsorb, absorb, or dissolve `Br_(2)`.As such there is no change is colour of `Br_(2)`. Remaining dissolves or absorb or adsorb bromine.
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`Fe^(2+) (aq)+NO_(3)^(-) (aq)+H_(2)SO_(4) (conc.) to` Brown ring The brown ring is due to the formation of complex, `[Fe(H_(2)O)_(5)NO]SO_(4)`. What i
Correct Answer - 1 Here `NO` is `NO^(+)`, so in `[Fe(H_(2)O)_(5)NO^(+)]^(2+)`, the oxidation state of iron is `+1`
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A cube and a sphere of the same material and same total surface area are placed in the sae space turn by turn, after heating them to the same temperat
Correct Answer - 1.38
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Ina certain town, 40% of the people have brown hair, 25% have brown eyes, and 15% have both brown hair and brown eyes. If a person selected at random
Correct Answer - B We have, `P(A)=40/100,P(B)=25/100and P(AnnB)=15/100` So, `P((B)/(A))=(P(AnnB))/(P(A))=(15//100)/(40//100)=3/8`
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There are 15 different apples and 10 different pears. How many ways are apple or a pear and then Jill to pick an apple and a pear?
Correct Answer - A `(a)` If jack picks an apple in `.^(15)C_(1)` ways, then Jill in `.^(14)C_(1)^(10)C_(1)`. If jack picks a pear in `.^(10)C_(1)` way, then Jill in `.^(15)C_(1)^(9)C_(1)`. `:.` Total...
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______________ is Apple’s closed source operating system for Apple’s iPhone, iPod Touch, iPad and second-generation Apple TVs
Iphone Operating System
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______________ is Apple’s closed source operating system for Apple’s iPhone, iPod Touch, iPad and second-generation Apple TVs.
(D) Iphone Operating System
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Browning of cut apple can be prolonged by applying lemon juice.
Browning of cut apple is due to the oxidation of polyphenols at a particular pH to quinones, which further undergoes polymerization to form brown coloured tannins. This browning reaction can be...
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