1. ASSERTION : Ionization potential of K is numerically the same as electron affinity of K+. REASON : I.E. and E.A. both depends on screening effect.
Correct!
Wrong!
2. ASSERTION : All F – S – F angle in SF4 is greater than 90° but less than 180°. REASON : The lone pair-bond pair repulsion is weaker than bond pair-bond pair repulsion.
Correct!
Wrong!
3. ASSERTION : At critical point, the densities of substance in gaseous and liquid states are same. REASON : Critical temperature is the temperature at which the real gas exhibits ideal behaviour for considerable range of pressure.
Correct!
Wrong!
4. ASSERTION : The second dissociation constant of fumaric acid is greater than maleic acid. REASON : Higher the dissociation constant of acid, more is the acidic character.
Correct!
Wrong!
5. ASSERTION : Fluorine is a stronger oxidising agent than iodine. REASON : Fluorine has greater electronegativity than iodine.
Correct!
Wrong!
6. ASSERTION : Br2 is an electrophile in halogenation reaction of benzene. REASON : Benzene reacts with Br2 in presence of H2SO4 to form bromobenzene.
Correct!
Wrong!
7. ASSERTION : On heating ferromagnetic or ferrimagnetic substances, they become paramagnetic. REASON : The electrons randomly change their spin on heating.
Correct!
Wrong!
8. ASSERTION : When a concentrated solution is diluted by adding more water, the number of moles of solute in the solution remains unchanged. REASON : Number of moles of a solute is equal to the product of molarity and volume of solution in litres.
Correct!
Wrong!
9. ASSERTION : Hydrolysis of ethyl acetate in presence of acid is a reaction of first order whereas in presence of alkali, it is a reaction of second order. REASON : Acid only acts as a catalyst whereas alkali acts as one of the reactants.
Correct!
Wrong!
10. ASSERTION : Ozone reacts with BaO2 to give BaO. REASON : Ozone acts as an oxidising agent in this reaction.
Correct!
Wrong!
Chemistry day-8
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