Question : What is the pH of normal milk?

Option 1: 9.1-9.3

Option 2: 8.1-8.3

Option 3: 5.4-5.6

Option 4: 6.7-6.9

Question : One litre of milk costs INR 40. Water is mixed with milk and the mixture cost becomes INR 30 per litre. Find the ratio of water and milk in the mixture.

Option 1: 2 : 5

Option 2: 1 : 3

Option 3: 1 : 2

Option 4: 2 : 3

Question : What is the pH of human blood?

Option 1: 6.5

Option 2: 5.8

Option 3: 10

Option 4: 7.4

Question : A 10-litre solution of milk and water contains 8 litres of milk. 2 litres of the solution is replaced by pure milk and mixed. The process is repeated two more times. How much milk (in litres) is present in the mixture so obtained?

Option 1: 8.976

Option 2: 8.597

Option 3: 8.796

Option 4: 8.679

Question : In a solution of water and milk, the quantity of milk is double the quantity of water. To pass the quality standards, the solution must contain 90% milk in it. If the volume of the solution is ${v}$, then how much pure milk in litres is to be added to the solution to pass the quality standard?

Option 1: $\frac{4v}{3}$

Option 2: $\frac{3v}{4}$

Option 3: $\frac{7v}{4}$

Option 4: $\frac{7v}{3}$

Question : Directions: Which of the given responses would be a meaningful order of the following words?
1. Curd
2. Milk
3. Buttermilk
4. Cow
5. Ghee
6. Butter

Option 1: 2, 5, 6, 4, 1, 3

Option 2: 4, 6, 2, 1, 3, 5

Option 3: 4, 2, 1, 3, 6, 5

Option 4: 2, 6, 4, 5, 3, 1