Chemistry Practice Question and Answer
8 4 Q:
609e4c75e941dd6183d99e45 4 Q:
6245534c398e4a497b3e9570 4 Q:
60939952b8018e6486aef888 4 Q:
61275cd493f02206607eb0af Answer : 2. "Mercury"
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608290e438ab470ae93bd340 4 Q:
61275989dbe92e068b90f6be 4 Q:
6082915b38ab470ae93bd9be 4 Q:
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Q: How are 'anions' formed?
733 0609e4c75e941dd6183d99e45
609e4c75e941dd6183d99e45- 1Addition of electrontrue
- 2Removal of electronfalse
- 3Addition of protonfalse
- 4Removal of protonfalse
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Answer : 1. "Addition of electron "
Q: Which one of the following substance is used in photography and also as an antichlor ?
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6245534c398e4a497b3e9570- 1Chrome redfalse
- 2Sodium thisosulphatetrue
- 3Hydrogen peroxidefalse
- 4Calomelfalse
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Answer : 2. "Sodium thisosulphate "
Q: The coil in a heater is made of
726 160939952b8018e6486aef888
60939952b8018e6486aef888- 1Nichrometrue
- 2Tungstenfalse
- 3Copperfalse
- 4Ironfalse
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Answer : 1. "Nichrome"
Q: Which of these metals is found in liquid state?
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61275cd493f02206607eb0af- 1Ironfalse
- 2Mercurytrue
- 3Silverfalse
- 4Othersfalse
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Answer : 2. "Mercury"
Explanation :
Mercury is the only metal that is liquid at normal temperatures.
Q: .______ is least reactive element belonging to group 17.
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608290e438ab470ae93bd340- 1Brominefalse
- 2Iodinetrue
- 3Chlorinefalse
- 4Fluorinefalse
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Answer : 2. "Iodine "
Q: Which gas is deposited at the anode on electrolysis of alumina?
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61275989dbe92e068b90f6be- 1Hydrogen gasfalse
- 2Nitrogen gasfalse
- 3carbon dioxide gasfalse
- 4Oxygen gastrue
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Answer : 4. "Oxygen gas"
Q: Which of the following has low density and low melting point?
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6082915b38ab470ae93bd9be- 1Natrue
- 2Fefalse
- 3Cufalse
- 4Aufalse
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Answer : 1. "Na"
Q: What is an oxidation-reduction reaction called?
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5feb01ebf6205c4d625d0454- 1endothermic reactionfalse
- 2Redox reactiontrue
- 3precipitation reactionfalse
- 4exothermic reactionfalse
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Answer : 2. "Redox reaction"
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