Chemistry GK Practice Question and Answer
8 Q: Which non-metal is liquid at room temperature?
1119 06127640793f02206607ee962
6127640793f02206607ee962- 1mercuryfalse
- 2aluminumfalse
- 3Brominetrue
- 4Copperfalse
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Answer : 3. "Bromine"
Q: Which of the following elements is NOT a component of baking soda?
1112 164bfc857a2d4dcaf044da339
64bfc857a2d4dcaf044da339- 1Hydrogenfalse
- 2Calciumfalse
- 3Sodiumfalse
- 4Oxygentrue
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Answer : 4. "Oxygen"
Explanation :
1. Which of the following calcium elements is not a component of baking soda?
2. The chemical formula of baking soda is NaHCO3, which is composed of four elements sodium, hydrogen, carbon and oxygen.
3. Baking soda is an alkaline substance used as a leavening agent in baking.
Q: Which law was studied in the year 1787, in which it was said that the volume of a gas increases with its absolute temperature and if its absolute temperature decreases, then its volume will decrease?
1108 064b5204188d5e4f52dd2277b
64b5204188d5e4f52dd2277b- 1Boyle’s lawfalse
- 2Dalton’s lawfalse
- 3Avogadro’s lawfalse
- 4Charles's lawtrue
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Answer : 4. "Charles's law"
Explanation :
1. Charles's law (also known as volume law) is an experimental gas law.
2. The volume of a gas increases with its absolute temperature and as its absolute temperature decreases its volume also decreases.
3. Charles's law was studied in the year 1787.
Q: Which metal floats when put in water?
1100 061275a37302e8b067c99aa84
61275a37302e8b067c99aa84- 1Calciumtrue
- 2Nickelfalse
- 3Magnesiumfalse
- 4Potassiumfalse
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Answer : 1. "Calcium"
Q: Which of the following reactions always have pairs together?
1099 05f698f46558d255013b2b2b6
5f698f46558d255013b2b2b6- 1combination and dissolutionfalse
- 2precipitation and displacementfalse
- 3neutralization and displacementfalse
- 4Oxidation and degradationtrue
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Answer : 4. "Oxidation and degradation"
Q: Which metal does not react with oxygen even at high temperature?
1097 0612759fb302e8b067c99a4be
612759fb302e8b067c99a4be- 1Ironfalse
- 2goldtrue
- 3Potassiumfalse
- 4Aluminumfalse
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Answer : 2. "gold"
Q: The alloy of lead and tin is called?
1094 061276441dbe92e068b9154b4
61276441dbe92e068b9154b4- 1Steelfalse
- 2metalloidsfalse
- 3Gun Matonfalse
- 4soldertrue
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Answer : 4. "solder"
Q: Which compound is formed when copper is burnt in air?
1093 0612764bd93f02206607eefa2
612764bd93f02206607eefa2- 1copper hydroxidefalse
- 2copper hydridefalse
- 3Copper Oxidetrue
- 4nothingfalse
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