101. Which of the following gases is present under pressure in soft drinks?
102. If we burn graphite,
103. Lead pencil contains
104. Highest percentage of carbon is found in which form of coal?
105. The main source of carbon monoxide is
106. Highly toxic gas which causes headache, visual difficulty, paralysis and even death is
107. Water gas is the combination of
108. The gas that causes suffocation and death when coal or coke is burnt in a closed room is
109. Which one is not a pure form of carbon?
110. Which one is the purest form of carbon?
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