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Physical Properties of oils and Fats (a) Fats are solids, while oils are liquids. (b) They both are soluble in ether, chloroform and benzene although insoluble in water.
The first use of quantum theory to explain the structure of atom was made by: (1) Heisenberg (2 )Bohr (3) Planck (4) Einstein Ans: Bohr
How many gaseous elements are there in the s block of modern periodic table? What are they??
(i) Illutrate integrated rate law and derive it for first order reaction. (ii) Why coal does not burn by itself in air but once initiated by flame, it continues to burn?
Azimuthal quantum number defines: (1) e/m ratio of electron (2) Spin of electron (3) Angular momentum of electron (4) Magnetic momentum of electron Ans: Angular mo
What is chemical kinetis
React Benzil with 60% NaOH
two reasons why is it necessary to ionise chromium atomsin a sample
Q. Show Formula Mask synthesised by Wemer? In all the compounds with the formula Mask synthesised by Wemer, he could isolate only two isomers. This indicated that the structure
Which one of the following groupings represents a collection of isoelectronic species: (1) NA +, Ca 2+ , Mg 2+ (2) N3, F - , Na + (3) be, Al 3+ , Cl -
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