Question : The ratio of sand to stone in a mixture is 5 : 8 while that between stone and cement is 32 : 35. What is the ratio of sand to cement in the mixture?

Option 1: 4 : 3

Option 2: 1 : 7

Option 3: 2 : 3

Option 4: 4 : 7

Question : A bottle holds 8 litres of a mixture of milk and water in a ratio of 3 : 1. 3 litres of water is added to the given mixture. Find the new ratio of milk and water in the mixture.

Option 1: 3 : 2

Option 2: 1 : 3

Option 3: 2 : 3

Option 4: 6 : 5

Question : Mounds of sand formed by wind action are called:

Option 1: Cliffs

Option 2: Cirques

Option 3: Dunes

Option 4: Hamadas

Question : The rhythmic rise and fall of ocean water twice in a day is called a ______.

Option 1: fall

Option 2: tide

Option 3: wave

Option 4: current

Question : In a 255-litre mixture of milk and water, the ratio of milk and water is 4 : 1. Find the quantity of water required to make the ratio of milk and water 4 : 3.

Option 1: 94 litres

Option 2: 51 litres

Option 3: 102 litres

Option 4: 55 litres