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Q41) Silica is soluble in ... [ EAMCET 1998]




SOLUTION

SiO2 + 4HF → SiF4 + 2H2O
SiF4 + 2HF → H2SiF6
Answer: (d)


Q42) The shape of gaseous SnCl2 is .. [ Kerala MEE 2000]




SOLUTION

two bonding pairs and one nonbonding pair on the central Sn; the bond angles are roughly 109 degrees (p2 hybridized); the molecule is polar due to the angular shape
Answer: (c)


Q43) Butter of tin is ... [ BVP pune 2002]



SOLUTION


Answer:(d)



Q44) Which of the following is a true acid anhydride



SOLUTION


Answer: (b)


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