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Chemistry |
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| 376)As per Dulong and petit's law which one of the following is correct? | |||
| Atomic weight * Specific heat = 6.4 | Atomic weight * Specific heat = 3.2 | ||
| Atomic weight = Equivalent weight * Valency | Atomic weight * Equivalent weight = 6.4 | ||
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| 377)Which one of the following is equivalent weight of carbonate ion? | |||
| 15 | 20 | ||
| 30 | 45 | ||
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| 378)Which of the following emission responsible for increasing atomic number? | |||
| Beta particle | Alpha emission | ||
| Proton emission | Neutron emission | ||
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| 379)Wchich of the following is unionised? | |||
| Alpha ray | Beta ray | ||
| Cathod ray | Gamma ray | ||
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| 380)Excess of neutron in nuclear reactor is absorbed by- | |||
| heavy water | cadmium | ||
| graphite | hard water | ||
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| 381)Isotope of which of the following elements is called radium of poor? | |||
| Iodine | Cobalt | ||
| Nickel | None of these | ||
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| 382)Elements present on the right side of periodic table are - | |||
| inner transition elements | transition element | ||
| non metal | metal | ||
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| 383)Oxygen belongs to - | |||
| s - block | p - block | ||
| d - block | f - block | ||
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| 384)Which of the following element is metalloid ? | |||
| Al | P | ||
| Si | Ge | ||
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| 385)Why vapour density of glycerine can not be determined by Vivtor Meyer's method? | |||
| It decomposes before its boiling point at normal pressure | Its boiling point is higher than the boiling point of water | ||
| It is liquid at normal temperature and pressure | Its density is higher than the density of water | ||
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| 386)Which of the following is unit of radio activity? | |||
| Becquarel | Curie | ||
| Rutherford | Both (b) and (c) | ||
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| 387)Basis of long form of periodic table is - | |||
| valancy | atomic number | ||
| atomic weight | reactivity | ||
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| 388)Which of the following has the maximum oxidising power? | |||
| Iodine | Chlorine | ||
| Fluorine | Bromine | ||
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| 389)Which of the following halogen element has the largest atomic size? | |||
| Iodine | Chlorine | ||
| Bromine | Fluorine | ||
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| 390)Spot the strong resucing agent from the following? | |||
| Halogen | Alkaline earth metal | ||
| Noble gases | Alkali metal | ||
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