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Sindh -> 9th Class -> Chemistry -> Chemical Combinations MCQs

Question:

The molecular formula mass os ozone

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A: 48 a.m.u
B: 55a.m.u
C: 31a.m.u
D: 95a.m.u
Answer: A
Sindh -> 9th Class -> Chemistry  -> Chemical Combinations Abdul Hadi
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MCQs related to Sindh -> 9th Class -> Chemistry -> Chemical Combinations

Question:

The molecular formula mass os ozone

www.pkmcqs.com

A: 48 a.m.u
B: 55a.m.u
C: 31a.m.u
D: 95a.m.u
Answer: A
Sindh -> 9th Class -> Chemistry  -> Chemical Combinations Abdul Hadi
www.pkmcqs.com

Question:

The molar mass of H2SO4 is

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A: 98 pg
B: 98 kg
C: 98 g
D: 98ng
Answer: C
Sindh -> 9th Class -> Chemistry  -> Chemical Combinations Abdul Hadi
www.pkmcqs.com

Question:

Mass can neither be created nor destroyed during a chemical reaction is the law of

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A: Mass combination
B: Multiple proportion
C: Constant compostion
D: Reciprocal proportion
Answer: A
Sindh -> 9th Class -> Chemistry  -> Chemical Combinations Sameer Ahmedd
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Question:

No.Of mole in 50g of Na is

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A: 4.21 mol
B: 2.173 mol
C: 6.21 mol
D: 4.6621 mol
Answer: B
Sindh -> 9th Class -> Chemistry  -> Chemical Combinations Abdul Hadi
www.pkmcqs.com

Question:

Mass can neither be created nor destroyed during a chemical reaction is the law of

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A: Convservation of mass
B: Multiple proportion
C: Constant compostion
D: Reciprocal proportion
Answer: A
Sindh -> 9th Class -> Chemistry  -> Chemical Combinations Sameer Ahmedd
www.pkmcqs.com