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The minimum amount of energy needed for the reaction to takes place is known as threshold energy.
The ratio between the neutrons in C and Si with respect to atomic masses 12 and 28 is: (1) 2 : 3 (2) 3 : 2 (3) 3 : 7 (4) 7 : 3 Ans: 3 : 7
which coating is better for steel. Tin or zinc?
Uses of Unsaturated halides (Halo-alkene) The major use of vinyl chloride is in the manufacture of polyvinyl chloride that is abbreviated as PVC plastic that is employed these
1000
Conditions which a dye must satisfy and describe them
In an element going away from nucleus, the energy of particle : (1) Decreases (2) Not changing (3) Increases (4) None of these Ans: Increases
how to find atomicity of an element
what are macroscopic properties ?
classification of mixture according to particle size, uniform mixture, composed of solute and solvent
(a) Define the so-called 'colligative' properties, and write brief notes about each of them. (b) A system comprises two liquid components. State whether the system would be lik
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