Chemistry GK Practice Question and Answer
8 4 Q:
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5eeb1496eee45c3b837b0312 4 Q:
5feb06f200e3f71b828c287a 4 Q:
650ab26a63078e50a28c8adb Answer : 2. "If it has more electrons than neutrons"
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Q: Which acid is found in vinegar?
2035 05feb0482f6205c4d625d17c4
5feb0482f6205c4d625d17c4- 1lactic acidfalse
- 2citric acidfalse
- 3Methanoic acidfalse
- 4Acetic acidtrue
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Answer : 4. "Acetic acid"
Q: Which of the following is the softest?
1835 05eeb1496eee45c3b837b0312
5eeb1496eee45c3b837b0312- 1Sodiumtrue
- 2Copperfalse
- 3Ironfalse
- 4Aluminumfalse
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Answer : 1. "Sodium"
Q: Which of the following metals can be cut with a knife?
1742 05feb06f200e3f71b828c287a
5feb06f200e3f71b828c287a- 1Magnesiumfalse
- 2Sulfurfalse
- 3Sodiumtrue
- 4Chromiumfalse
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Answer : 3. "Sodium"
Q: Which of the following will be a negative ion?
1712 0650ab26a63078e50a28c8adb
650ab26a63078e50a28c8adb- 1If it has more electrons than protonsfalse
- 2If it has more electrons than neutronstrue
- 3If it has more protons than electronsfalse
- 4If it has more protons than neutronsfalse
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Answer : 2. "If it has more electrons than neutrons"
Explanation :
If an atom has more electrons than protons, it is a negative ion or anion. If it has more protons than electrons, it is a positive ion.
Q: What is the pH value of sodium hydroxide?
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5f697aa5397b1a52908bfe4f- 111false
- 212false
- 313false
- 414true
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Answer : 4. "14"
Q: Used in removing permanent hardness of water?
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5eeb131bad25df5a632567d5- 1running sodatrue
- 2bleaching powderfalse
- 3Caustic sodafalse
- 4Baking Sodafalse
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Answer : 1. "running soda"
Q: Is zinc ore?
1636 05feb073bd6478d50160f1f48
5feb073bd6478d50160f1f48- 1zinc bladetrue
- 2Bauxitefalse
- 3sodium chloridefalse
- 4Sinawarfalse
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Answer : 1. "zinc blade"
Q: Which metal starts floating when put in water?
1623 05feb08b7f6205c4d625d2e66
5feb08b7f6205c4d625d2e66- 1calciumtrue
- 2Nickelfalse
- 3Magnesiumfalse
- 4Potassiumfalse
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Answer : 1. "calcium"
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