91. The common name of sodium bicarbonate is
92. Which among the following stage is suitable indicator when solution of sodium carbonate is mixed with sulphuric acid ?
93. Alum stops bleeding in minor cuts because of
94. The chemical name of 'Hypo' commonly used in photography is
95. Interveinal necrotic spots on leaves appear due to
96. The main component of liquid bleach is:
97. Quartz is made of
98. What is the product formed when sodium bicarbonate is heated strongly?
99. Cement is formed by strongly heating a mixture of
100. Persons working in cement plants and lime stone quarries are prone to disease like
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