The chemical formula of ice is
The chemical formula of ice is H2O.
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Which of the following statements regarding sulphur is incorrect? a) Suplur is paramagnetic b) The oxidation state of Sulphur is never less than +4 in its compound. c) The vapour at 2000C consists of S8 rings. d) At 6000C, the gas consists of S2 molecules
The correct answer is (b) The oxidation state of Sulphur is never less than +4 in its compound. The oxidation state... View Article
The dipole moments of ccl4 chcl3 and ch4 are in the order
The dipole moments of CCl4, CHCl3 and CH4 are in the order: CHCl3 > CCl4 = CH4
The chemical symbol for sodium is_________
Answer: The chemical symbol for sodium is Na. Sodium (Na) Sodium has a strong metallic lustre and in colour is... View Article
What are the characteristics of a chemical reaction
The characteristics of a chemical reaction are :Change in colorEvolution of gasChange in stateFormation of a solidFormation of new substancesChange... View Article
What is Stephen’s reaction?
Stephen’s reaction mechanism begins with the addition of gaseous Hydrogen chloride to a given Nitrile. The named reaction – Stephen... View Article
What are ambident nucleophiles? Explain with an example.
A Nucleophile that can execute nucleophilic attacks from two or more different places in the molecule (or ion) is called... View Article
Define azeotropes. What type of azeotrope is formed by a positive deviation from Raoult’s law? Give an example.
Azeotropes are binary liquid mixtures that distil at a constant temperature without undergoing any change in composition. Minimum boiling azeotropes... View Article
Galvanized iron sheets are coated with
Galvanized iron sheets are coated with zinc (Zn).
When ammonium chloride is dissolved in water the solution becomes colder. The change is
When ammonium chloride is dissolved in water the solution becomes colder. The change is Endothermic because heat is absorbed.
Oxygen is a neutral gas which supports combustion. True or False.
True, oxygen is a neutral gas that supports combustion. As we know that combustion is reliant on a chemical reaction... View Article
Explain hoffmann bromamide degradation reaction and write the general equation for reaction involved.
When an amide is treated with bromine in an aqueous or ethanolic solution of sodium hydroxide, degradation of amide leads... View Article
What is the common oxidation state for Sulphur?
Sulphur exhibits oxidation numbers of -2, 0, +2, +4 and +6. For example, elemental sulfur has an oxidation number of... View Article
Which of the following is a polyamide?
(a) Bakelite (b) Terylene (c) Nylon-66 (d) TeflonCorrect answer: (c) Nylon-66Nylon-66 is a polyamide of hexamethylene diamine and adipic acid.
the general electronic configuration of the transition elements is
The general electronic configuration of the transition elements is (n – 1)d¹⁻¹⁰ ns¹⁻².
Conversion of propene to propan-2-ol.
When propene is reacted with water in the presence of an acid as a catalyst, as a result, we obtain... View Article
Molar mass of NaNO3 is
The atomic mass of sodium (Na) = 23g The atomic mass of nitrogen (N) = 14g The atomic mass of... View Article
What is Hybridization in XeF6?
The Hybridization type in XeF6 (Xenon Hexafluoride) is sp3d3.
In which mode of expression, the concentration of a solution remains independent of temperature?
(a) Molarity (b) Normality (c) Formality (d) MolalityCorrect answer: (d) MolalityMolality is the mode of expression, the concentration of a... View Article
Total number of orbitals associated with third shell will be_______
Answer: The total number of orbitals associated with the third shell will be 9. In the third shell (n=3), we... View Article
