NEET (UG) – 2013 Chemistry Previous Year
Q.46 The value of Planck's constant is 6.63 × 10–34 Js. The speed of light is 3 × 1017 nm s–1. Which value is closest to the wavelength in nanometer…
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January 9, 2022
NEET (UG) – 2012 Main Chemistry Previous Year
1. Vapour pressure of chloroform (CHCl3) and dichloromethane (CH2Cl2) at 25°C are 200 mm Hg and 41.5 mm Hg respectively. Vapour pressure of the solution obtained by mixing 25.5 g…
January 9, 2022
NEET (UG) – 2011 Pre Chemistry Previous Year
51. The total number of atomic orbitals in fourth energy level of an atom is(1) 4 (2) 8(3) 16 (4) 3252.(1) 0.150 V (2) 0.500 V(3)…
December 28, 2021
General Properties of Alkene : Physical and Chemical
Physical Properties The first three members of this series are ethene, propene and butene gases. After this the members up to C16H32 are liquid and the members higher than this…
November 25, 2021
14 Most Important Reactions in Chemistry
Kolbe Reaction The preparation of hydrocarbons at the anode by electrolysis of aqueous solutions of sodium or potessium salts of acids is called Kolbe synthesis and this reaction is called…
November 4, 2021
Hydrogen Bond : Sigma bond and Pi bond with example
Hydrogen Bond The bond which is formed between an atom of hydrogen and an atom of a negative electronegative element due to the mutually stable electrostatic attraction force of their…
October 17, 2021