Chemistry concepts by Dr Krishna Rani
Hi, I'm Dr Krishna Rani from Kota, Rajasthan. Retired professor of Chemistry and principal, college education. I have 48+ years of teaching experience with Hindi & English speaking students preparing for competitive exams - JEE/NEET/NET. I am here to share my love for this subject with you all.
Chemistry concepts by Dr Krishna Rani
Q. The acidic character of oxides increases down Group 13. It is
2 days ago | [YT] | 10
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Chemistry concepts by Dr Krishna Rani
Q. AlCl₃ exists as a dimer (Al₂Cl₆) in the vapour phase. It is
2 days ago | [YT] | 2
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Chemistry concepts by Dr Krishna Rani
Q. All elements of Group 13 have +3 oxidation state as their most stable oxidation state. It is
2 days ago | [YT] | 8
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Chemistry concepts by Dr Krishna Rani
Q. Gram atomic mass is the mass of one atom expressed in grams. It is
3 days ago | [YT] | 4
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Chemistry concepts by Dr Krishna Rani
Q. Empirical formula mass is always less than or equal to molecular formula mass. It is
3 days ago | [YT] | 4
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Chemistry concepts by Dr Krishna Rani
Q. One mole of NaCl contains Avogadro number of Na⁺ ions and Avogadro number of Cl⁻ ions . It is
3 days ago | [YT] | 4
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Chemistry concepts by Dr Krishna Rani
Q. Equivalent weight of an element depends on its valency. It is
4 days ago | [YT] | 9
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Chemistry concepts by Dr Krishna Rani
Q. At STP, 1 mole of all gases occupies 22.4 L. It is
4 days ago | [YT] | 7
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Chemistry concepts by Dr Krishna Rani
Q. Percentage composition helps in determining empirical formula. It is
1 week ago | [YT] | 14
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Chemistry concepts by Dr Krishna Rani
Q. 22.4 L volume is applicable to solids also at STP. It is
1 week ago | [YT] | 13
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