Question

I) Molecular mass of a compound is 98.98. Its molecular formula is
II) The mass exactly equal to the 1/12th mass of a carbon-12 is called
III) Which of the following statement is incorrect
A) quartz contain SiO2units
B) carbon has 3 isotopes
C) Titanium is called little silver
D) petrol contain hydrocarbons
IV) Which of the following is formed in corrosion
A) Fe2O3.xH2O
B) Ag2S
C) CuCO3.Cu(OH)2
D) All
v) Which of the following are soft metals
A) alkali metals B) alkaline earth metals C) d block D) f block

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Answer 1

Answer:

F dil tum 8c

Explanation:

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Answer 2

1) C2H4Cl2, 12*2+4*1+35.5*2 you will get close to 98.98