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Q121) A metal, M forms chlorides in +2 and +4 oxidation states. Which of the following statements about these chlorides is correct? [ AIEEE 2006]




SOLUTION

Compounds of metal in lower oxidation state are more ionic than those in higher state. This is in accordance with Fajan's rule
Answer: (c)


Q122) The oxidation number of C in CH2O is




SOLUTION


Answer: (c)


Q123) Chrome yellow is



SOLUTION


Answer:(a)



Q124) What happened when SiO4 4- is heated



SOLUTION


Answer: (a)


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