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The presence of starch in leaves can be tested by the Iodine test. When we remove chlorophyll from the leaf by boiling it in alcohol and then putting two drops of iodine solution, it is a colour change to blue indicates the presence of starch
A cylindrical tank has a radius of 7 meters and a height of 24 meters. A cone is placed inside the tank such that it touches the bottom and the sides of...
Three solid Metallic cubes of edges 15cm, 17cm and 18cm are melted together to make a new cube. 296 cm3 of the melted material is lost due to...
The value of tan2 θ + cot2 θ − sec2 θ cosec2 θ is:
The lateral surface area of a cube is 256 cm2 . The length of a cuboid is 50% more than the side of the cube. The breadth of the cuboid is 5 ...
A rectangular piece of land has a perimeter of 56 metres and length of 22 metres. If the area of the land is to be divided into 6 equal portions, then w...
The radius of a hemisphere is 10 cm. What is the total surface area of the hemisphere (including the base)?
The length of a rectangle and the side of a square are in the ratio of 6:7, respectively. The breadth of the rectangle is 33(1/3)% less than its length....
Each side of square ‘A’ is 8 cm less than that of square ‘B’. The perimeter of a rectangle is 6 times the difference of the perimeters of the tw...
Two paths of width 5 metres are to be made in the centre of rectangular field such that they are perpendicular to each other. Find the area (in m2<...
