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Q:

Water always contains hydrogen and oxygen in the ratio 1:8 by weight.This is in accordance with the 

A) Law of Multiple Proportions B) Law of Definite Proportion
C) Law of Conservation of mass D) Law of Reciprocal Proportions

Answer:   B) Law of Definite Proportion



Explanation:

The Law of Definite Proportion states that the same compound, wherever found or however made, always contains the same elements combined together in the same fixede ratio by weight.

Subject: Chemistry
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What is the maximum number of electrons that the  outermost shell can have?

 

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The first electron shell which is the nearest to the nucleus never holds more than 'n' electrons, where 'n' is equal to:

 

 

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What is the atomic mass of Zirconium?

 

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C) 88.22 D) 90.22
 
Answer & Explanation Answer: A) 91.22

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How many types of isotopes does Scandium have?

 

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Which of the following has the lowest melting point?

 

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What is the bond angle (in degrees) in the structure of a benzene molecule?

 

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Answer & Explanation Answer: D) 120

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