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Ask QuestionPosted by Chanchal Shekhawat 6 years, 7 months ago
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Gaurav Seth 6 years, 7 months ago

Chlorination at C-2 and C-4 produces no chiral compound.
Hence (b) is the correct answer.
Posted by Shivangi Yadav 6 years, 7 months ago
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Gaurav Seth 6 years, 7 months ago
Among the following compounds, the most acidic is: [JEE-2011]
-
a)
p - nitrophenol
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b)
p - hydroxybenzoic acid
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c)
o - hydroxybenzoic acid
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d)
p - toluic acid
Correct answer is option 'C'.
Ortho-isomer, a strong hydrogen bridge can be formed between the phenolic -OH and the the carboxylate anion. This will tend to stabilize the conjugated carboxylate base, and hence will increase acidity.
this is the order of acidic
ortho hydroxy B.acid > meta hydroxy B.acid > benzoic acid > para hydroxy B. acids.
Posted by Tejaswini Shetty 6 years, 7 months ago
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Chhavi Singh 6 years, 7 months ago
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Rigved Tripathi 6 years, 7 months ago
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Shreya Sinha 6 years, 7 months ago
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Yogita Ingle 6 years, 7 months ago
Faraday’s constant is defined as the amount of charge required to liberate a gram equivalent of a substance during the process of electrolysis.
It is total charge on 1 mole of electrons. It is unit of charge.
1 F = 6.023 × 1023 × 1.6023 × 10-19 C = 96500 C
Posted by Ayush Dhinchak 6 years, 7 months ago
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Yogita Ingle 6 years, 7 months ago
- Force that resists motion of one body over another with which it is in contact.
- Denoted by fk
- As motion starts, fs vanishes and fk appears
- Kinetic friction is Independent of the area of contact and velocity of the body
- It varies with Normal reaction, N
fk ∝ N
fk = constant * N
fk = μk N; μk is the coefficient of kinetic friction
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Pulkit Bansal 6 years, 7 months ago
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Rigved Tripathi 6 years, 7 months ago
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Yogita Ingle 6 years, 8 months ago
Mycorrhiza is a symbiotic association of fungi with the root systems of some plants. The fungal hyphae either form a dense network around the young roots or they penetrate the cells of the roots. The large surface area of the fungal hyphae is helpful in increasing the absorption of water and minerals from the soil. In return, they get sugar and nitrogenous compounds from the host plants. The mycorrhizal association is obligate in some plants. For example, Pinus seeds do not germinate and establish in the absence of mycorrhizal.
Posted by Suresh Khiradkar 6 years, 8 months ago
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Yogita Ingle 6 years, 8 months ago
The amount of the filtrate formed by the kidneys per minute is called glomerular filtration rate (GFR). The value of GFR in a healthy individual is approximately 125 ml/minute i.e., 180 litres per day
Posted by Mohd Salman 6 years, 8 months ago
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Manu Maurya 6 years, 7 months ago
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Mehta Khushal 6 years, 2 months ago
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