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Cations are electrically neutral particles which may or may not exist independently in a solution. 

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Important Questions on Atoms and Molecules

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Which of the following is a major component of German Silver?
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Catalyst is a substance that_____:

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_____ element has the largest atom and _____ element has the smallest atom.
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The valency of Chlorine with respect to oxygen is _____.

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How many moles of sulphuric acid are present in 25 gm?

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Which of the following chemical is commonly known as caustic soda? 
(A) Sodium Chloride 
(B) Sodium Bicarbonate
(C) Sodium Carbonate
(D) Sodium hydroxide 

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A chemical _____ is present in the cork cells to make them impervious to gases and water:
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An example of a solution of liquid in solid is:
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Sodium hydroxide reacts with _____ to form a solution of table salt:
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Which of the given below atomic numbers of elements resembles the chemical properties of Magnesium?

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Which is that solid substance that is commonly known as dry ice?

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Which of these is an essential component of most acids?
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The most tensile element among the following is_____:
 
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In which group all the chemical elements are colourless, tasteless odourless gases? 

 
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What is the name of the element specifically used as a filament of an electric bulb? 
 
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When the level of oxygen in muscles decreases in the process of energy production, then 6 carbon atoms decrease to  ______ carbon atoms:
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Milkiness observed during passing carbon dioxide through lime water is due to the formation of:
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The element with atomic number 57 belongs to _____:
 
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What does CO stands for?
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Which of the following is not a bleaching agent?

1. Sodium hypochlorite
2. Calcium hypochlorite
3. Hydrogen peroxide
4. Hydrogen sulphide