| 43. | The method that cannot be used for removing permanent hardness of water is | |||||||
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| 44. | The following are the half lives of four active isotopes. Which one of the following is the most dangerous to handle? | |||||||
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| 45. | The gas used for artificial ripening of green fruit is | |||||||
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| 47. | The main chemical constituent of the oil of cardamom which is responsible for flavour of this oil is | |||||||
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| 48. | The molecule which has the highest percentage of ionic character among the following is | |||||||
Answer: Option B Explanation: No answer description available for this question. |