If 30 J of energy is added to water in the form of heat at 27°C, what is the change in entropy of water?

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#Question id: 12813

#General Aptitude

A took 15 sec. to cross a rectangular field diagonally walking at the rate of 52 m/min. and B took the same time to cross the same field along its sides walking at the rate of 68 m/min. The area of the field is :

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#Question id: 12814

#General Aptitude

The difference between the length and breadth of a rectangle is 23m. If its perimeter is 206 m, then its area is

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#Question id: 12815

#General Aptitude

There is a rectangular tank of length 180 m and breadth 120m in a circular field. If the area of the land portion of the field is 40000 m2, what is the radius of the field ?  

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#Question id: 12816

#General Aptitude

The length of a rectangular hall is 5m more than its breadth. Thearea of the hall is 750m2. The length of the hall is :

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#Question id: 12817

#General Aptitude

If the length and breadth of a rectangle are in the ratio 3 : 2 and its perimeter is 20 cm, then the area of the rectangle (incm2) is :

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#Question id: 12818

#General Aptitude

A path of uniform width runs round the inside of a rectangular field 38 m long and 32 m wide. If the path occupies 600 m2, then the width of the path is