Chemistry GK Practice Question and Answer
8 4 Q:
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61275bc7dbe92e068b9111ff Answer : 3. "alkaline"
Q: Which of the following metals does not react with cold or hot water?
996 05eeae018ad25df5a63247ecc
5eeae018ad25df5a63247ecc- 1Nafalse
- 2Cafalse
- 3Mgfalse
- 4Fetrue
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Answer : 4. "Fe"
Q: Which gas accumulates at the anode after electromagnetic decomposition of alumina?
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5feb077f00e3f71b828c2c39- 1Hydrogen gasfalse
- 2nitrogen gasfalse
- 3Carbon dioxide gasfalse
- 4oxygen gastrue
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Answer : 4. "oxygen gas"
Q: Which metal does not react with oxygen even at higher temperatures?
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5feb081400e3f71b828c2fed- 1Ironfalse
- 2Goldtrue
- 3Potassiumfalse
- 4Aluminumfalse
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Answer : 2. "Gold"
Q: Gastric juice contains acids?
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5eeb136fbc81cb2528f1ed1b- 1Acetic acidfalse
- 2Sulfuric acidfalse
- 3Hydrochloric acidtrue
- 4Nitric acidfalse
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Answer : 3. "Hydrochloric acid"
Q: It is easy to make stone by beating metals. Which property of the metal does it indicate?
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6127655cb05363065a00ac0c- 1hardnessfalse
- 2malleabilitytrue
- 3conductivityfalse
- 4Activityfalse
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Answer : 2. "malleability"
Q: Is gas given with oxygen to patients for diagnosis of breathing problem?
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5eeade29ad25df5a63247c4f- 1Heliumtrue
- 2Organfalse
- 3Radonfalse
- 4Kryptonfalse
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Answer : 1. "Helium"
Q: Which is the first metal used by humans?
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5eeb13ffad25df5a63256bd3- 1Goldfalse
- 2Ironfalse
- 3Coppertrue
- 4Silverfalse
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Answer : 3. "Copper"
Q: The producers formed by the combustion of magnesium are -
960 061275bc7dbe92e068b9111ff
61275bc7dbe92e068b9111ff- 1is acidicfalse
- 2is indifferentfalse
- 3alkalinetrue
- 4allfalse
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Answer : 3. "alkaline"
Explanation :
Therefore, the correct option is (C) Magnesium ribbon on burning in air produces: 'Magnesium oxide, heat and light'.
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