General Science Class 6th MCQs=745

• When something not solvable in liquid (water + soil) the mixture is called heterogeneous mixture.
• When something solvable in liquid (water + salt) the mixture is called homogeneous mixture.
• When we something solve in water, for example salt solve in water. The solvable thing is called Solute (مُنحل) and
• water is called solvent (مُحلل). And the mixture of both is called solution (محلول).
• The solution in which water is taken as solvent is known as aqueous solution.
• Aqua is a Latin words meaning water.
• The solution in which solvent is something other than water is called non aqueous solution.
• 70% of human body is made up of water.
• Water also is called universal solvent.
• The solution that contain maximum amount of dissolved solute is described as a saturated solution (سیر شدہ).
  
• The solution that contains less solute and can still accommodate some more under the same condition is known as unsaturated solution (غیرسیرشدہ).
  
• Dilute solution are those solution, which contain small amount of dissolved solute in the solution.
• Concentrated solutions are those solutions which contain large amount of dissolved solute in the solution.
• As temperature increase, solubility’s of gases decrease.

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Which of these are completely soluble in water
a) Sand                                   
b) Cooking oil 
c) Wax                        
d) Table salt

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Which of the following is soluble in water?
NTS PET 24/08/2019 (1:30)
a) Sand                                   
b) Chalk Dust
c) Sodium chloride     
d) wax

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A solution is made by dissolving some salt in a beaker of water. The salt is referred as………
a) Solute                     
b) Filtrate        
c) Solution                  
d) Solvent

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Solubility of which of the following substance increases with increase in temperature?
a) table salt (NaCl)      
b) carbon dioxide
c) potassium nitrate   
d) oxygen

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Which statement is true for saturated solution?
a) maximum solute at given temperature
b) can dissolve more solute
c) small amount of solute
d) further added solute will vanish

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