Question : Water cycle refers to

Option 1: an integrated attempt to recycle water in relatively arid regions

Option 2: the constant movement of water from the ocean to land and back to the ocean once again

Option 3: scientific management of water in areas excessively plagued with waterlogging

Option 4: water distribution in relatively dry areas

Question : Uric acid is the chief nitrogenous waste of which of the following?

Option 1: Humans

Option 2: Frogs

Option 3: Fishes

Option 4: Birds

Question : If $\triangle ABC$ is right-angled at B, AB = 30 units and $\angle ACB=60°$, what is the value of AC?

Option 1: $20$ units

Option 2: $20\sqrt3$ units

Option 3: $40$ units

Option 4: $60$ units

Question : What is the area of the region bounded by a straight line $9x+4y=36$, x-axis and the y-axis?

Option 1: 12 sq. units

Option 2: 18 sq. units

Option 3: 16 sq. units

Option 4: 15 sq. units

Question : If the numerical values of the height and the area of an equilateral triangle are the same, then the length of each side of the triangle is:

Option 1: 2 units

Option 2: 4 units

Option 3: 5 units

Option 4: 8 units