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give examples of mixtures separated by distillation under reduced pressure
Resonance effect or mesomeric effect (1) The effect where electrons are transferred from a multiple bond to a molecule, or from a multiple bond to a one covalent bond or lone p
The angular momentum of an electron depends on: (1) Principal quantum number (2) Azimuthal quantum number (3) Magnetic quantum number (4) All of these Ans: Azimutha
how were anode rays discovered
Question 1: (i) What are the main physical properties of hydrogen sulphide? (ii) Which occupational group of workers is often exposed to hydrogen sulphide? (iii) O
Q. What do you mean by nucleus of the atom? The nucleus of an atom for the reason that atoms have no net electrical charge scientists reasoned that if an atom contains particle
GLASS: Glass is amorphous solid which is not true solid, it is rather super cooled liquid which possesses a very high viscosity. It has no fixed melting point, on heating graduall
1. Enter the symbol of a sodium ion, Na+, followed by the formula of a sulfate ion, SO42- ..Express your answers as ions separated by a comma. 2.Enter the expression 147N+a, wher
what is mole concept
Q. Magnetic Properties of f-block element? You have learnt in the preceding unit-that paramagnetism is related with the presence of unpaired electrons in a substance. The actin
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