Litmus is obtained from
1). a bacterium
2). a fungus
3). an algae
4). lichen
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1. This group of alumino silicate minerals is widely used In making electrical insulators
2. The gas causing acid rain in an industrial area is
4. Atoms of same element having different mass numbers are called________
5. The Fungus which is used in the alcohol industry is .
7. Question 14.23:The two strands in DNA are not identical but are complementary. Explain.
10. Brown stains in vessels and clothes indicate the presence of high quantities of ________ in water.