86.Which of the following statements is true with respect to Leukaemia :

87.The law of conservation of energy states that :

88.Which of the following has been found useful in keeping cholesterol level down ?

89.Which of the following are the pollutants that a traffic constable is likely to inhale ?1. Carbon monoxide2. Lead3. Sulphur dioxide 4. Oxides of nitrogen

90.In certain amino acids, which one of the following elements is found in nitrogen and oxygen