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During a flame test why is calcium''s flame not persistent, while that of strontium is?
Ans) Because it does not have many ions as compared to the Strontium. It is the ions which produce color.
The nature of bonding in graphite is: (1) Covalent (2) Ionic (3) Metallic (4) Coordinate Ans: Covalent
the reaction of ammonium chloride with sulphuric acid
decomposition of carbonates
Explain terminal carbons and central carbons The terminal carbons are bound to three groups, and are thus trigonal planar. The central carbon is bound to two groups, and is
principle or radiometric titration
The electrons would go to lower energy levels first and then to higher energy levels according to which of the following: (1) Aufbau principle (2) Pauli's exclusion princip
n-propyl acetate (bp 102 C) evaporates rapidly when exposed to air, but water(bp 100C)does not. Explain why
how can we identify the ammonical smell and punjent smell?
Which one is least ionic in the following compounds: (1) Agcl (2) Kcl (3) Bacl 2 (4) Cacl 2 Ans: Agcl
Question 1 Write a short note on the following Photoelectric effect Transition Elements Hydrogen bonding Standard entropy Question 2 What are aromatic acids
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