Chemistry-
General
Easy
Question
Anthracene is purified by:
- filtration
- distillation
- crystallisation
- sublimation
The correct answer is: sublimation
Related Questions to study
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Steam distillation is applied to those organic compounds which are steam volatile and:
Steam distillation is applied to those organic compounds which are steam volatile and:
Chemistry-General
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Latest technique for purification, isolation and separation of organic compounds is:
Latest technique for purification, isolation and separation of organic compounds is:
Chemistry-General
Chemistry-
Arrange the following compounds in order of increasing dipole moment:
i) toluene
ii) m-dichloro benzene
iii) o-dichloro benzene
iv) p-dichloro benzene
Arrange the following compounds in order of increasing dipole moment:
i) toluene
ii) m-dichloro benzene
iii) o-dichloro benzene
iv) p-dichloro benzene
Chemistry-General
Chemistry-
The maximum possible number of hydrogen bonds, a water molecule can form is:
The maximum possible number of hydrogen bonds, a water molecule can form is:
Chemistry-General
Chemistry-
Maximum amount of hydrogen bonding occurs in case of:
Maximum amount of hydrogen bonding occurs in case of:
Chemistry-General
Chemistry-
In which of the compounds below is there more than one kind of hybridization 
for carbon?
i) 
ii) 
iii) 
iv) 
In which of the compounds below is there more than one kind of hybridization for carbon?
i)
ii)
iii)
iv)
Chemistry-General
Chemistry-
Resonance in a molecule results in:
Resonance in a molecule results in:
Chemistry-General
Chemistry-
bond is the most polar.
bond is the most polar.
Chemistry-General
Chemistry-
Which of the following compounds shows evidence of the strongest hydrogen bonding?
Which of the following compounds shows evidence of the strongest hydrogen bonding?
Chemistry-General
Chemistry-
The compound buta-I,2-diene has: [Hint: The structure of buta-I ,2-diene is 
The compound buta-I,2-diene has: [Hint: The structure of buta-I ,2-diene is
Chemistry-General
Chemistry-
The number of sigma and pi bonds in but-l-ene-3-yne are:
The number of sigma and pi bonds in but-l-ene-3-yne are:
Chemistry-General
Chemistry-
The C-H bond distance is the longest in:
The C-H bond distance is the longest in:
Chemistry-General
Chemistry-
An aqueous solution of a mixture of two inorganic salts, when treated with diluteHCl, gave aprecipitate (P) and a filtrate (Q). The precipitate P was found todissolve in hot water. The filtrate (Q) remained unchanged,whentreatedwithH2Sinadilute mineral acidmedium. However, it gave a precipitate(R)with H2S in an ammoniacal medium. The precipitate R gave acolored solution(S),whentreatedwithH2O2inan aqueous NaOH medium. The colored solution Scontains:
An aqueous solution of a mixture of two inorganic salts, when treated with diluteHCl, gave aprecipitate (P) and a filtrate (Q). The precipitate P was found todissolve in hot water. The filtrate (Q) remained unchanged,whentreatedwithH2Sinadilute mineral acidmedium. However, it gave a precipitate(R)with H2S in an ammoniacal medium. The precipitate R gave acolored solution(S),whentreatedwithH2O2inan aqueous NaOH medium. The colored solution Scontains:
Chemistry-General
Physics-
The part of a transistor which is most heavily doped to produce large number of majority charge carries is :
The part of a transistor which is most heavily doped to produce large number of majority charge carries is :
Physics-General
Physics-
The energy band gap is maximum in :
The energy band gap is maximum in :
Physics-General
