Glycerine is purified by
Glycerine is purified by Options (a) vacuum distillation (b) simple distillation (c) steam distillation (d) sublimation Correct Answer: vacuum distillationExplanation:The…
7 years ago
Chemistry
The number of primary, secondary and tertiary carbons in 3,4-dimethylheptane
The number of primary, secondary and tertiary carbons in 3,4-dimethylheptane are respectively Options (a) 4,3 and 2 (b) 2,3 and…
7 years ago
116 mg of a compound on vaporisation in a Victor Meyer’s apparatus displaces
116 mg of a compound on vaporisation in a Victor Meyer's apparatus displaces 44.8 mL of air measured at S.T.P.…
7 years ago
An organic compound contains 49.3% carbon,6.84% hydrogen and its vapour density
An organic compound contains 49.3% carbon, 6.84% hydrogen and its vapour density is 73. Molecular formula of the compound is…
7 years ago
Difference in density is the basis of
Difference in density is the basis of Options (a) ultrafiltration (b) molecular sieving (c) gravity separation (d) molecular attraction Correct…
7 years ago
Chromatography is a valuable method for the separation, isolation,purification
Chromatography is a valuable method for the separation, isolation,purification and identification of the constituents of a mixture and it is…
7 years ago
Which one of the following is not true for the hydrolysis of t-butyl bromide
Which one of the following is not true for the hydrolysis of t-butyl bromide with aqueous NaOH Options (a) reaction…
7 years ago
Reaction of methyl bromide with aqueous sodium hydroxide involves
Reaction of methyl bromide with aqueous sodium hydroxide involves Options (a) racemisation (b) SN1 mechanism (c) inversion of configuration (d)…
7 years ago
In Kjeldahl’s method,ammonia from 5g of food neutralizes 30 cm3 of 0.1 N acid.
In Kjeldahl's method,ammonia from 5g of food neutralizes 30 cm³ of 0.1 N acid.The percentage of nitrogen in the food…
7 years ago
In acetylene molecule, the two carbon atoms are linked by
In acetylene molecule, the two carbon atoms are linked by Options (a) one sigma bond and two pi bonds (b)…
7 years ago