Chemistry Practice Question and Answer
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Q: Used in removing permanent hardness of water?
1865 05eeb131bad25df5a632567d5
5eeb131bad25df5a632567d5- 1running sodatrue
- 2bleaching powderfalse
- 3Caustic sodafalse
- 4Baking Sodafalse
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Answer : 1. "running soda"
Q: Potassium nitrate is used in
1843 05f6c2e19ec13dd7480faf0f8
5f6c2e19ec13dd7480faf0f8- 1medicinefalse
- 2saltfalse
- 3glassfalse
- 4fertilisertrue
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Answer : 4. "fertiliser"
Q: How many categories of elements are divided on the basis of properties?
1836 05eeadf0fad25df5a63247e87
5eeadf0fad25df5a63247e87- 14false
- 26false
- 33true
- 42false
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Answer : 3. "3"
Q: Burning of Hydrogen produces
1835 05f0439f6d996064ceba91846
5f0439f6d996064ceba91846- 1Soilfalse
- 2Watertrue
- 3Oxygenfalse
- 4Ashfalse
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Answer : 2. "Water"
Q: Is zinc ore?
1835 05feb073bd6478d50160f1f48
5feb073bd6478d50160f1f48- 1zinc bladetrue
- 2Bauxitefalse
- 3sodium chloridefalse
- 4Sinawarfalse
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Answer : 1. "zinc blade"
Q: The percentage of nitrogen present in ammonium sulphate is:
1834 060b0d6453f7fb454b9dd0d87
60b0d6453f7fb454b9dd0d87- 1$$ 30.5 \% $$false
- 2$$ 18 \% $$false
- 3$$ 21 \% $$true
- 4$$ 25\% $$false
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Answer : 3. "$$ 21 \% $$"
Q: Methane an air pollutant is produced ___________
1823 06113d4d088e0566940a8176d
6113d4d088e0566940a8176d- 1by burning of coal in insufficient airfalse
- 2by digestion of food by animalstrue
- 3by action of ultraviolet light on nitrogenous compounds.false
- 4as a by-product of manufacturing ammoniacal fertilizersfalse
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Answer : 2. "by digestion of food by animals"
Q: Gold is alloyed with which metal to make it harder?
1820 05f571a5b79cfd646ddd37291
5f571a5b79cfd646ddd37291- 1Cfalse
- 2Snfalse
- 3Cutrue
- 4Agfalse
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Answer : 3. "Cu"
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