Related Questions

Solution X contains 40% salt and 60% water by weights, Solution Y contains 25% salt and 75% water. If a mixture of X and Y contains 30% salt. What percent of the weight of this mixture is solution X?
A 10%
B 33.3%
C 40%
D 42.5%
The internal resistance of an alkali cell is nearly _____ times that of the lead-acid cell.
A two
B three
C four
D five
A solution which resists change in its pH value on addition of acid/alkali is called the __________ solution.
A Neutral
B Ideal
C Buffer
D Zero pH
How much salt must we add to 10 grams of a 20% salt solution to strengthen it into a 50% solution?
A 5 gm
B 3 gm
C 6 gm
D 4 gm
Due to a 25% increase in the price of salt, a person got 10 kg less quantity for Tk. 500 than he was getting before the increase.What was the initial price per kg of salt in taka?
A 10
B 15
C 25
D 30
How many pounds of pure salt must be added to 30 pounds of a 2% solution of salt and water to increase it to a 10% solution?
A 23
B 83
C 63
D 75
A recipe for 4 servings requires salt and pepper to be added in the ratio of 2: 3 . If the recipe is adjusted to make 8 servings, what is the ratio of the salt and pepper that must now be added?
A 4: 3
B 2 : 6
C 2 : 3
D 3 : 2
a chemial is mixed 30 ml mixed , 10 ml is acid , how much ml of acid must be mixed such that a 50/50 mixure of water and acid is attend if no additional water is added
A 20
B 10
C 40
D 30
How many liters of a 90% of concentrated acid needs to be mixed with a 75% Solution of concentrated acid to get a 30 liter Solution of 78% concentrated acid?
A 8
B 6
C 7
D 9
The molecular mass of sulphuric acid is 98. If 49 g of the acid is dissolved in water to make one litre of solution, what will be the strength of the acid?
A Two normal
B One normal
C 0.5 normal
D Four normal

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