IIT JEE : Chemistry Of Non Metals QUESTIONS AND ANSWERS :: part2 : 16 to 20
Following IIT JEE Entrance Multiple choice objective type questions and answers will help you in Maths, Physics and Chemistry 2024 examinations :
16.Oleum is also called |
| Peroxydisulphuric acid |
| Caros acid |
| Fuming sulphuric acid |
| Magic acid. |
17.Which of the following does not contain silicon element. |
| Quartz |
| Kaolinite |
| Asbestos |
| Fluorapatite. |
18.Orthoboric acid on dehydration at 373 K produces mainly |
| metaboric acid |
| boric anhydride |
| boron metal and oxygen |
| pure boric acid. |
19.Borax bead test is applicable to coloured salt because coloured salts |
| are very unstable |
| are highly stable |
| form coloured metaborates |
| decolorize during the test. |
20.The variety of glass that is used for the manufacture of optical instruments is |
| Sodium glass |
| Flint glass |
| Ground glass |
| Quartz. |
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