Question : Directions: Among four books, Book 1 is twice as heavy as Book 2. Book 3's weight is half of Book 2's weight. Book 4 is 60 grams more as compared to Book 2, but 60 grams less as compared to Book 1. Which book is the heaviest?

Option 1: Book 1

Option 2: Book 2

Option 3: Book 3

Option 4: Book 4

Question : If $(2x-y)^{2}+(3y-2z)^{2}=0$, then the ratio $x:y:z$ is:

Option 1: $1 : 3 : 2$

Option 2: $1:2:3$

Option 3: $3:1:2$

Option 4: $3:2:1$

Question : The sum of two numbers is thrice their difference, their ratio is:

Option 1: 1 : 2

Option 2: 2 : 1

Option 3: 3 : 1

Option 4: 1 : 3

Question : The radii of two cylinders are in the ratio 1 : 4 and their heights are in the ratio 4 : 3. Their volumes will be in the ratio ______.

Option 1: 1 : 12

Option 2: 2 : 9

Option 3: 3 : 10

Option 4: 1 : 9

Question : Humidity is measured by Which of the following?

Option 1: Lactometer

Option 2: Polarimeter

Option 3: Thermometer

Option 4: Hygrometer