91. The gas dissolved in water that makes it basic is :
92. Which of the following acts as promoter for iron in Haber's process?
93. One property of ammonia is
94. Which one of the following is used for dating very old objects of archaeological importance?
95. In which of the following substances all carbon atoms are quaternary in nature ?
96. When lime juice is dropped on baking soda, brisk effervescence takes place because the gas evolved is
97. Which of the following is used as filler in tyre of rubber ?
98. The open "Sigrees" or coal stoves often require fanning to sustain burning because of
99. 24 carat of diamond is equal to
100. 1 carat of diamond is equal to
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