Chemistry-
General
Easy
Question
Catalyst used in Kjeldahl's method for the estimation of nitrogen is:
- sodium
- magnesium
- mercury
- copper
The correct answer is: mercury
Related Questions to study
Chemistry-
In the estimation of carbon and hydrogen, if the substance also contains nitrogen, then near the exit, it is placed:
In the estimation of carbon and hydrogen, if the substance also contains nitrogen, then near the exit, it is placed:
Chemistry-General
Chemistry-
The Sodium extract Of an organic compound on boiling with
and addition of ammonium molybdate solution gives a yellow precipitate. The compound contains:
The Sodium extract Of an organic compound on boiling withand addition of ammonium molybdate solution gives a yellow precipitate. The compound contains:
Chemistry-General
Chemistry-
Which of the following sodium compound/compounds are formed "when an organic compound containing both nitrogen and sulphur is fused with sodium?
Which of the following sodium compound/compounds are formed "when an organic compound containing both nitrogen and sulphur is fused with sodium?
Chemistry-General
Chemistry-
The hydrogen bond is an electrostatic attractive force between covalently bonded hydrogen atom of one molecule and an electronegative atom like (F, 0, N) of other molecule. Hydrogen bond is nearly an electrostatic attractive force and not a normal chemical bond. It is very weak (2-10kcal/mol) as compared to a covalent bond (strength 50-100kcal/mol). In intramolecular hydrogen bonding, the two or more than two molecules of the same or different substances are linked to form polymeric aggregate. Intermolecular hydrogen bonding increases the boiling point of the compound and also its solubility in water. Intramolecular hydrogen bonding occurs within two atoms of the same molecule. Intramolecular hydrogen bonding is also called chelation, since it. involves· . ring formation. Intramolecular hydrogen bonding decreases the boiling point of the compound and also its solubility in water. Which of the following compounds is (are) stablised by intramolecular hydrogen bonding?
The hydrogen bond is an electrostatic attractive force between covalently bonded hydrogen atom of one molecule and an electronegative atom like (F, 0, N) of other molecule. Hydrogen bond is nearly an electrostatic attractive force and not a normal chemical bond. It is very weak (2-10kcal/mol) as compared to a covalent bond (strength 50-100kcal/mol). In intramolecular hydrogen bonding, the two or more than two molecules of the same or different substances are linked to form polymeric aggregate. Intermolecular hydrogen bonding increases the boiling point of the compound and also its solubility in water. Intramolecular hydrogen bonding occurs within two atoms of the same molecule. Intramolecular hydrogen bonding is also called chelation, since it. involves· . ring formation. Intramolecular hydrogen bonding decreases the boiling point of the compound and also its solubility in water. Which of the following compounds is (are) stablised by intramolecular hydrogen bonding?
Chemistry-General
Chemistry-
The correct decreasing order of stability of I, II and III carbocations is
I) 
II) 
III) 
The correct decreasing order of stability of I, II and III carbocations is
I)
II)
III)
Chemistry-General
Chemistry-
Two molecules indicated below are capable to intramolecular H-bonding. Which is likely to form more stable hydrogen bonds?
I) 
II) 
Two molecules indicated below are capable to intramolecular H-bonding. Which is likely to form more stable hydrogen bonds?
I)
II)
Chemistry-General
Chemistry-
(A) Acetone (b.pt. 329K) and methyl alcohol (b.pt. 338 K) are separated by fractional distillation.
(R) Fractional distillation helps in -separating two liquids from their mixture when their boiling points differ by 10
C
(A) Acetone (b.pt. 329K) and methyl alcohol (b.pt. 338 K) are separated by fractional distillation.
(R) Fractional distillation helps in -separating two liquids from their mixture when their boiling points differ by 10C
Chemistry-General
Chemistry-
The compound formed in the positive test fornitrogen with the Lassaigne solution of an organic compound is
The compound formed in the positive test fornitrogen with the Lassaigne solution of an organic compound is
Chemistry-General
Chemistry-
Identification of cations can also be done using a dry test called sodium carbonate-bead test which is similar to borax-bead test.
Identify A, and what is the hybridization of A?
Identification of cations can also be done using a dry test called sodium carbonate-bead test which is similar to borax-bead test.
Identify A, and what is the hybridization of A?
Chemistry-General
Chemistry-
(A) Mixture of glucose and m-dinitrobenzene can-be separated by shaking it with ether,
(R) Glucose is soluble in water.
(A) Mixture of glucose and m-dinitrobenzene can-be separated by shaking it with ether,
(R) Glucose is soluble in water.
Chemistry-General
Chemistry-
Number of
and 
bonds in C6H5COOH is:
Number of and bonds in C6H5COOH is:
Chemistry-General
Chemistry-
Consider the following compounds:
A) chloroethene
B) benzene
C) buta-l,3-diene
D) 1,3,5-hexatriene
All the carbon atoms are Sp2 -hybridized in:
Consider the following compounds:
A) chloroethene
B) benzene
C) buta-l,3-diene
D) 1,3,5-hexatriene
All the carbon atoms are Sp2 -hybridized in:
Chemistry-General
Chemistry-
In the compound 
the 
bond is of the type:
In the compound the bond is of the type:
Chemistry-General
Chemistry-
Which is correct statement about azeotropic mixture?
Which is correct statement about azeotropic mixture?
Chemistry-General
Chemistry-
Anthracene is purified by:
Anthracene is purified by:
Chemistry-General
