Question
STD
✓
Answer
STD – Sexually Transmitted Diseases
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Match the following:
| 1. Ethene | (a) $C _3 H _4$ |
| 2. Ethane | (b)$C _3 H _6$ |
| 3. Propyne | (c) $C _2 H _4$ |
| 4. Propene | (d) $C _2 H _6$ |
RCH
| i. Cuprite | (a) Halide ore |
| ii. Marble | (b) Oxide ore |
| iii. Fluorspar | (c) Sulphide ore |
| iv. Galena | (d) Carbonate ore |
| 1. Uranium core bomb | (a) fusion bomb |
| 2. Plutonium core bomb | (b) fission bomb |
| 3. Hydrogen bomb | (c) Nagasaki |
| 4. Atom bomb | (d) Hiroshima |
| 1. Waldeyar | (a) Role of chromosome in heredity |
| 2. James Watson and Crick | (b) Father of genetics |
| 3. Hugo de Vries | (c) Down’s syndrome |
| 4. Langdon Down | (d) Chromosomes |
| 5. T.H Morgan | (e) Mutation |
| 6. Gregor Johan Mendel | (f) Model of DNA |
Match the Column I with Column II.
Match the column A with column B.
| i. Sugar in water | (a) Exothermic process |
| ii. Sulphur in carbon sulphide | (b) Aqueous solution |
| iii. The solubility of CaO | (c) Endothermic process |
| iv. Solubility of $KNO_3$ | (d) Non-aqueous solution |
