Question : Which of the following options are homogeneous mixtures?

Option 1: Solution, colloid, suspension, milk, toothpaste, salt water and brass

Option 2: The solution, salt water and Brass

Option 3: Solution, Colloid, Milk, Toothpaste, Saltwater, and Brass

Option 4: Colloid, suspension, milk and toothpaste

Question : If 4 litres of water is evaporated on boiling from 12 litres of salt solution containing 7 percent salt, the percentage of salt in the remaining solution is:

Option 1: 10.5%

Option 2: 11.5%

Option 3: 12%

Option 4: 13%

Question : What is a brine solution?

Option 1: Excess salt + water

Option 2: Silver

Option 3: Excess ethanol + water

Option 4: Excess starch + water

Question : Which of the following seas has the highest salinity?

Option 1: Red Sea

Option 2: Black Sea

Option 3: Dead Sea

Option 4: Arabian Sea

Question : A sugar solution of 3 litres contains 60% sugar. One litre of water is added to this solution. Then the percentage of sugar in the new solution is:

Option 1: 30%

Option 2: 45%

Option 3: 50%

Option 4: 60%