Question
RCH
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| i. 22 g of $CO _2$ | (a) 2 moles |
| ii. 18 g of $H _2 O$ | (b) 4 moles |
| iii. 360 g of Glucose | (c) 0.5 mole |
| iv. 64 g of $CH _4$ | (d) 1 mole |
| 1. Power | (a) V = IR |
| 2. Joule’s law | (b) ρ=RAl |
| 3. Ohm’s law | (c) P = VI |
| 4. Specific Resistance | (d) I = Qt |
| 5. Electric energy | (e) $H = I^2$ |
| 1.$CH _3 OH$ | (a) Dimethyl Ketone |
| 2. $CH _3 CHO$ | (b) Acetic acid |
| 3. $CH _3 COCH _3$ | (c) Acetaldehyde |
| 4. $CH _3 COOH$ | (d) Methyl alcohol |
| i. Isotopes | (a) $S _8, P _4$ |
| ii. Isobars | (b) ${ }_6 C ^{13}{ }_7 N ^{14}$ |
| iii. Isotones | (c) ${ }_1 H ^1,{ }_1 H ^2,{ }_1 H ^3$ |
| iv. Polyatomic molecule | (d) ${ }_{18} Ar ^{40}{ }_{20} Ca ^{40}$ |
| 1. Oparin and Haldane | (a) use and disuse theory |
| 2. Ernest Haeckel | (b) Mutation theory |
| 3. Leonardo da Vinci | (c) Father of Indian palaeobotany |
| 4. Jean Baptiste Lamarck | (d) Life from the chemical reaction |
| 5. Darwin | (e) Father of palaeontology |
| 6. De Vries | (f) Radioactive carbon |
| 7. Birbal Sahni | (g) Ethnobotany |
| 8. W.F. Libby | (h) Origin of species |
| 9. J.W. Harshberger | (i) Biogenetic law |
| Alloy | Metals present | Uses |
| 1. Brass | Fe, C, Ni | Statues, Coins |
| 2. Bronze | Al, Mg, Mn, Cu | Aircraft, Pressure cookers |
| 3. Duralumin | Fe, C, Ni, Cr | Cables, Propeller |
| 4. Magnalium | Cu, Sn | Automobile parts, Utensils |
| 5. Stainless steel | Cu, Zn | Scientific instruments, Air craft |
| 6. Nickel steel | Al, Mg | Medals, decorative items |
| i. $F_2$ | (a) Polyatomic molecule |
| ii. $O _3$ | (b) Monoatomic molecule |
| iii. $P_4$ | (c) Diatomic molecule |
| iv. $He$ | (d) Triatomic molecule |
| i. Solubility of $KNO_3$ | (a) decreases with increase in temperature |
| ii. The solubility of CaO | (b) increases with increase in pressure |
| iii. The solubility of oxygen | (c) increases with increase in temperature |
| iv. Solubility of $CO _2$ | (d) more in cold water |
| i. Saturated solution | (a) Sulphur in acetone |
| ii. Unsaturated solution | (b) 56 g NaCl in water |
| iii. Supersaturated solution | (c) 10 g of NaCl in water |
| iv. Non-aqueous solution | (d) 36 g of NaCl in water |