10cm\(^3\)
12cm\(^3\)
14cm\(^3\)
16cm\(^3\)
Correct answer is D
No explanation has been provided for this answer.
The number of electrons in the valence shell of an element of atomic number 14 is?
1
2
3
4
Correct answer is D
No explanation has been provided for this answer.
Suitable reagents for the laboratory preparation of nitrogen are
sodium dioxonitrate(III) and ammonium chloride
sodium trioxonitrate(V) and ammonium chloride
sodium chloride and ammonium trioxonitrate(V)
sodium chloride and ammonium di-ozonitrate(III)
Correct answer is A
No explanation has been provided for this answer.
2.7g
1.2g
0.9g
0.3g
Correct answer is D
No explanation has been provided for this answer.
Extractive distillation
Filtration followed by distillation
Neutralization with sodium hydroxide followed by distillation
Neutralization with sodium hydroxide followed by filtration
Correct answer is A
Due to the presence of maximum Azeotrope,we use extractive distilination (with extractive distilation agents like sulfone) used for mixtures with low relative volatility,nearing unity.
Azeotrope is a mixture of liquids that has a constant boiling point because the vapour has thesame composition as the mixture.