TCS NQT Allegations and Mixtures Questions Quiz 1

Question 1

Time: 00:00:00
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?

8

8

9

9

7

7

6

6

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Question 2

Time: 00:00:00
Mary purchased a canning jar with juice with a capacity of 30 litres. Three litres of juice is removed from this jar and filled with water. This procedure was performed two more times. How much juice does Mary have now?

24

24

21.87

21.87

26

26

22.56

22.56

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Question 3

Time: 00:00:00
Yuvan had a barrel filled with liquid, with two parts water and six parts glucose. To make the combination ½ water and ½ glucose, how much of the combination would Yuvan draw and replace with water?

1/3

1/3

3/1

3/1

1/1

1/1

1/2

1/2

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Question 4

Time: 00:00:00
Karishma bought wheat for Rs. 124 per kg and Rs. 130 per kg, which she blended with a third wheat choice in a 1:1:2 ratio. If the combination is worth Rs. 150 per kg, what is the value of the third variation per kg?

175.50

175.50

154.56

154.56

173

173

175

175

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Question 5

Time: 00:00:00
Two alloys A and B are composed of two basic elements. The ratios of the compositions of the two basic elements in the two alloys are 5:3 and 1:2, respectively. A new alloy X is formed by mixing the two alloys A and B in the ratio 4:3. What is the ratio of the composition of the two basic elements in alloy X?

1:1

1:1

2:3

2:3

5:2

5:2

4:3

4:3

7:9

7:9

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Question 6

Time: 00:00:00
In a barrel 729ml of oil. N amount of oil is replaced by water. If the process continues for the 6times and find the amount of oil will be?

729(1-(n/729))6

729(1-(n/729))6

(729-n/729)6

(729-n/729)6

729(1-n/729)4

729(1-n/729)4

729(1-(n/729)^2)3

729(1-(n/729)^2)3

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This is a direct formula for such successive dilution questions. Refer to the Formulas below

It is solve using formula directly. Go through prepinsta theory lectures

It\'s a formula.

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Question 7

Time: 00:00:00
Mixture of milk and water has been kept in two separate containers. ratio of milk to water in one of the containers is 5:1 and that in the other container is 7:2. in what ratio the mixtures of these two containers should be added together so that the quantity of the milk in the new mixture may become 80%?

2:3

2:3

1:2

1:2

14:19

14:19

3:7

3:7

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Question 8

Time: 00:00:00
A mixture of a certain quantity of milk with 16 litres of water is worth 90p per litre. if pure milk be worth Rs.1.08 per litre, how much milk is there in the mixture?

75

75

80

80

65

65

60

60

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Question 9

Time: 00:00:00
A solution of 25 litres contain 20% sugar, if 10 litres of the solution is evaporated, find the percentage of sugar in the final solution?

27.5%

27.5%

20%

20%

25%

25%

33.33%

33.33%

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Question 10

Time: 00:00:00
A milk man mixed 1 : 4 solution of milk and water with another 1 : 2 solution of milk and water in the volume of ratio 3 : 2. If the profit earned by selling the first solution was 20% and the mixture was sold at the same price, what is the profit or loss percentage? You have to assume that water comes free of cost.

5.26% profit

5.26% profit

5.25% loss

5.25% loss

6.25% loss

6.25% loss

None of these

None of these

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