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Chemistry |
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| 346)Which one of the following is ore of Radium? | |||
| Haematite | Pitchblende | ||
| Bauxite | Lime stone | ||
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| 347)Which one of the following is same as alpha particle? | |||
| Hydrogen nucleus | Proton | ||
| Neutron | Helium nucleus | ||
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| 348)Which one of the following is number of molecules in one mole of gas? | |||
| 6.023 x 1023 | 6.023 x 1022 | ||
| 6.023 x 1019 | 6.023 x 10-23 | ||
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| 349)The factor(s) that affect(s) the rate of reaction- | |||
| pressure | catalyst | ||
| temperature | all of these | ||
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| 350)Which one of the following diseases is treated by Cobalt-60 isotope? | |||
| Malaria | Cancer | ||
| Tuberculosis | Heart disease | ||
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| 351)The substance that reduce the rate of reaction is called- | |||
| Negative catalyst | Positive catalyst | ||
| Auto catalyst | Catalystic position | ||
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| 352)Which one of the following is the volume of one mole of gas at NTP? | |||
| 11.2 litre | 11.2 millilitre | ||
| 22.4 litre | 22.4 millilitre | ||
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| 353)Which of the following is the use of Carbon - 12? | |||
| Producing heavy water | Treating cancer patient | ||
| Determination age of an object | None of these | ||
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| 354)Which one of the following is example of thermal decomposition? | |||
| 2Hg2O → 2H2 + O2<,sub> | 2HgO → 2Hg + O2<,sub> | ||
| 2AgBr2 → 2Ag + Br2<,sub> | None of these | ||
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| 355)The reaction - NaCl → Na+ + Cl- is | |||
| an addition reaction | a ionic dissociation reaction | ||
| double decomposition reaction | substitution reaction | ||
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| 356)The reaction of acetylene with hydrogen in the presence of red hot nickel is | |||
| an addition reaction | a substitution reaction | ||
| a dissociation reaction | a decomposition reaction | ||
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| 357)The reaction AgNO3 + NaCl → AgCl + NaNO3 is | |||
| decomposition reaction | substitution reaction | ||
| dissociation reaction | double decomposition reaction | ||
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| 358)Which one of the following is used as catalyst in the hydrogeneration of oil? | |||
| Ni | Mo | ||
| Fe | Pt | ||
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| 359)At the end the chemical reaction the mass of catalyst - | |||
| decrease | increase | ||
| remain same | sometimes increases sometimes decreases | ||
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| 360)Compound with covelent bond is more soluble in | |||
| organic solvent | water | ||
| both (a) and (b) | none of these | ||
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