51. Sour taste of ‘Coca Cola’ is due to the presence of
52. An acid having basicity one is
53. The acid present in red ants is
54. Bee sting contains
55. Sweat contains water and ________
56. The substance most commonly used as a food preservative is
57. Curd is sour due to presence of
58. Drinking soda is
59. Which of the following has pH value 7?
60. Muscle fatigue is caused by the accumulation of :
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