Chemistry Practice Question and Answer
8 4 Q:
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5eeb13ffad25df5a63256bd3 4 Q:
5eeade29ad25df5a63247c4f 4 Q:
61275bc7dbe92e068b9111ff Answer : 3. "alkaline"
4 Q:
5f2cf8de21de6a117aefee33 4 Q:
612763cc93f02206607ee80f 4 Q:
5f5721e0df171125cbc1ae4f 4 Q:
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Q: What type of acid is found in curd?
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5f697af5558d255013b2469e- 1lactic acidtrue
- 2citric acidfalse
- 3Oxalic acidfalse
- 4Othersfalse
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Answer : 1. "lactic acid"
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: 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: The producers formed by the combustion of magnesium are -
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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'.
Q: The anode in a dry cell consists of
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5f2cf8de21de6a117aefee33- 1Cadmiumfalse
- 2Graphitefalse
- 3Copperfalse
- 4Zinctrue
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Answer : 4. "Zinc "
Q: What is an alloy of copper and tin called?
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612763cc93f02206607ee80f- 1brassfalse
- 2Duraluminfalse
- 3Bronzetrue
- 4Solderfalse
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Answer : 3. "Bronze"
Q: The general name of the elements of 17th group are
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5f5721e0df171125cbc1ae4f- 1Metalsfalse
- 2Noble gasesfalse
- 3Transition elementsfalse
- 4Halogenstrue
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Answer : 4. "Halogens"
Q: The air is the example of:
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5ee0d53b1541492ae598124e- 1The solution of solid in the gasfalse
- 2The solution of gas in the gastrue
- 3The solution of liquid in the gasfalse
- 4The solution of liquid in the solidfalse
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Answer : 2. "The solution of gas in the gas"
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