MIXTURE MCQ SET 4
1. A and B are two alloys of gold and copper prepared be mixing metals in ratios 7 : 2 and 7 : 11 respectively . If equal quantities of the alloys are melted to form a third alloy C , the ratio of gold and copper in C will be;
(a) 7 : 5
(b) 5 : 9
(c) 9 : 5
(d) 5 : 7
Answer: A
2. One cup has juice and water in the ratio 5 : 2 , while another cup of the same capacity has them in the ratio 7 : 4 , respectively . If contents of both the cups (when full) are poured in a vessel , then what will be the final ratio of water to juice in the vessel?
(a) 52 : 25
(b) 25 : 26
(c) 26 : 25
(d) 25 : 52
Answer: D
3. In two of brass , the ratios of Cooper to Zinc are 8 : 3 and 15 : 7 respectively . If the two types of brass be melted and mixed in the ratio 5 : 2 a new type of brass is obtained . The ratio of copper to zinc in this new type of brass is
(a) 3 : 2
(b) 2 : 3
(c) 3 : 4
(d) 5 : 2
Answer: D
4. The ratios of cooper to zinc in alloys A and B are 3 : 4 and 5 : 9 , respectively . A and B are taken in the ratio 2 : 3 and melted to form a new alloy C . What is the ratio of copper to zinc in C?
(a) 27 : 43
(b) 8 : 13
(c) 3 : 5
(d) 9 : 11
Answer: A
5. In vessels X and Y , the ratios of acid and water are 3 : 7 and 1 : 3 , respectively . The contents of X and Y are mixed in the ratio of 1 : 2 to get a solution in which acid and water are in the ratio a : b . What is the value b + a / b – a ?
(a) 15/7
(b) 11/7
(c) 13/7
(d) 12/7
Answer: A
6. Alloy A contains metals x and y only in ratio 5 : 2 , while alloy B contains them in the ratio 3 : 4 Alloy C is prepared by mixing alloys A and B in the ratio 4 : 5 . The percentage of x in alloy C is :
(a) 55 2/9
(b) 55 1/9
(c) 55 4/9
(d) 55 5/9
Answer: D
7. Mixture A contains chocolate and milk in the ratio 4 : 3 and mixture B contains chocolate and milk in the ratio of 5 : 2 . A and B are taken in the ratio 5 : 6 and mixed to form a new mixture . The percentage of chocolate in the new mixture is closest to :
(a) 35 %
(b) 69 %
(c) 31 %
(d) 65 %
ย Answer: D
8. Alloy A contains metals x and y in the ratio 5 : 2 and alloy B contains these metals in the ratio 3 : 4 . Alloy C is prepared by mixing A and B in the ratio 4 : 5 . The percentage of y in alloy C is :
(a) 44 4/9%
(b) 33 4/9%
(c) 66 4/9%
(d) 55 5/9%
Answer: A
9. The proportion of acid and water in three samples is 2 : 1 , 3 : 2 and 5 : 3 . A mixture containing equal quantities of all three samples is made . The ratio of water and acid in the mixture is:
(a) 120 : 133
(b) 227 : 133
(c) 227 : 120
(d) 133 : 227
Answer: B
10. Three utensils contain equal quantity oof mixtures of milk and water in the ratio of 6 : 1 , 5 : 2 and 3 : 1 respectively . If all the solutions are mixed together , the ratio of milk and water in the final mixture is :
(a) 65 : 28
(b) 65 : 19
(c) 19 : 65
(d) 19 : 28
Answer: B
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