Multiple choice What will happen if petrol is mixed with water and stirred? Crystals of petrol will form. Petrol will form a separate layer below the water. Petrol will form a separate layer on the surface of water. Petrol and water form a single layer. Water and petrol together will make a thick solution. Reveal answer Fill a bubble to check yourself C Correct answer Explanation Yes, petrol will form a separate layer on the surface of water because petrol is immiscible in water.