Question
The Polymerisation of which of the following is used in
the manufacturing of polythene in industry?Solution
Polyethylene is a light, versatile synthetic resin made from the polymerization of ethylene. Polyethylene is a member of the important family of polyolefin resins. It is the most widely used plastic in the world, being made into products ranging from clear food wrap and shopping bags to detergent bottles and fuel tanks.
A bus passes two bridges of length 500 m and 325 m in 90 seconds and 60 seconds respectively. The length (in m) of the bus is
A rectangular garden is bordered by a walkway of uniform width 5 metres. If the total area of the walkway is 1350 m², find the perimeter of the actual ...
A square’s side is 25% less than the length of a rectangle. The area and breadth of the rectangle are 2000 cm² and 40 cm respectively. Calculate the ...
The length and breadth of a rectangle are increased by 8% and 5%, respectively. By how much percentage will the area of the rectangle increase?
The angle of elevation of the top of a tower from a point on ground which is 30 mtrs. away from the foot of the tower is 30°. Height of the tower is:
A rectangular paper sheet of dimensions 33 cm x 14 cm is folded along its length to form a cylinder. What will be the volume of this cylinder? Take ㅠ ...
A circular wire enclosing the area of 9,856 cm² is bent to form a square. How much area will be enclosed by that wire?
A cube of side 14 cm is immersed completely in a cylindrical vessel of radius 10 cm. What will be the rise in the water level in the vessel due to the i...
A hollow cylindrical container has an inner radius of 5.5 cm, a length of 15 cm, and a thickness of 3 cm. Calculate the volume of the container. (Use π...
A right circular cone & a right circular cylinder have equal base & equal height. If the radius of the base & the height are in the ratio 8:...
