Chemistry Practice Question and Answer
8 4 Q:
5eeb131bad25df5a632567d5 4 Q:
5feb073bd6478d50160f1f48 4 Q:
6113d4d088e0566940a8176d 4 Q:
5feb08b7f6205c4d625d2e66 4 Q:
5f0439f6d996064ceba91846 4 Q:
5f571a5b79cfd646ddd37291 4 Q:
5eeadf0fad25df5a63247e87 4 Q:
60b0d6453f7fb454b9dd0d87
Q: Used in removing permanent hardness of water?
1797 05eeb131bad25df5a632567d5
5eeb131bad25df5a632567d5- 1running sodatrue
- 2bleaching powderfalse
- 3Caustic sodafalse
- 4Baking Sodafalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 1. "running soda"
Q: Is zinc ore?
1791 05feb073bd6478d50160f1f48
5feb073bd6478d50160f1f48- 1zinc bladetrue
- 2Bauxitefalse
- 3sodium chloridefalse
- 4Sinawarfalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 1. "zinc blade"
Q: Methane an air pollutant is produced ___________
1785 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
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 2. "by digestion of food by animals"
Q: Which metal starts floating when put in water?
1785 05feb08b7f6205c4d625d2e66
5feb08b7f6205c4d625d2e66- 1calciumtrue
- 2Nickelfalse
- 3Magnesiumfalse
- 4Potassiumfalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 1. "calcium"
Q: Burning of Hydrogen produces
1780 05f0439f6d996064ceba91846
5f0439f6d996064ceba91846- 1Soilfalse
- 2Watertrue
- 3Oxygenfalse
- 4Ashfalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 2. "Water"
Q: Gold is alloyed with which metal to make it harder?
1777 05f571a5b79cfd646ddd37291
5f571a5b79cfd646ddd37291- 1Cfalse
- 2Snfalse
- 3Cutrue
- 4Agfalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 3. "Cu"
Q: How many categories of elements are divided on the basis of properties?
1776 05eeadf0fad25df5a63247e87
5eeadf0fad25df5a63247e87- 14false
- 26false
- 33true
- 42false
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 3. "3"
Q: The percentage of nitrogen present in ammonium sulphate is:
1775 060b0d6453f7fb454b9dd0d87
60b0d6453f7fb454b9dd0d87- 1$$ 30.5 \% $$false
- 2$$ 18 \% $$false
- 3$$ 21 \% $$true
- 4$$ 25\% $$false
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 3. "$$ 21 \% $$"
en2669popular