Question
Which of the following elements is the most
reactive?Solution
The correct answer is D
The outer diameter of a hollow cylindrical brass rod is 9.1 cm. The rod is 35mm thick and is 40cm long. If the weight of 1 cubic centimeter of brass rod...
A circle inscribed in a square has a diameter of 14 cm. If a smaller square is inscribed within this circle, calculate the area of the smaller square. A...
Perimeter of a rectangle is 50% more than that of a square of side 30 cm. If the difference between the length and breadth of the rectangle is 7 cm, res...
The perimeter of a floor a room is 36m. What is the area of four walls of the room, if its height is 6m?
A rectangular piece of copper foil of length 63 cm and area 1386 cm2 is folded along its width to form a cylinder such that there is only one...
The length and breadth of a rectangle are increased by 20% and 30% respectively. The increase in the area of the resulting rectangle will be:
A closed wooden box of uniform thickness has length, breadth and height 20cms, 16cms and 12 cms respectively. If the thickness of the wooden block is 2 ...
Find the lateral surface area of a pyramid with a rectangular base measuring 12 meters by 8 meters and a slant height of 18 meters.
A box has 80 Red, 40Blue and 40 Black Balls. 25% of Red Balls and 50% of Blue Balls are taken away, percentage of Black balls at present is
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