Chemistry Practice Question and Answer
8 4 Q:
650ab26a63078e50a28c8adb Answer : 2. "If it has more electrons than neutrons"
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Q: Which of the following will be a negative ion?
2207 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: Percentage of lead in lead pencil is:
2172 05ed62769436d8a49583c61d8
5ed62769436d8a49583c61d8- 1zerotrue
- 220false
- 380false
- 47false
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Answer : 1. "zero "
Q: The atomic nucleus was discovered by
2162 05f0ecca3dcdb5f61f5c4abe9
5f0ecca3dcdb5f61f5c4abe9- 1Einsteinfalse
- 2Thompsonfalse
- 3Rutherfordtrue
- 4Daltonfalse
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Answer : 3. "Rutherford "
Q: Boiling Point of a liquid due to impurities
2122 05f6c3046b2d86d455070b891
5f6c3046b2d86d455070b891- 1increasestrue
- 2decreasesfalse
- 3remains unchangedfalse
- 4None of thesefalse
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Answer : 1. "increases"
Q: Lightest metal is___
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5f7465f1a921aa16e68bd6a5- 1Potassiumfalse
- 2Lithiumtrue
- 3Sodiumfalse
- 4Aluminumfalse
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Answer : 2. "Lithium"
Q: Which one of the following is also known as ' wood spirit’s?
2117 05efc069ee824154f4027ad4b
5efc069ee824154f4027ad4b- 1Methyl alcoholtrue
- 2Ethyl alcoholfalse
- 3Ethylene glycolfalse
- 4Glycerolfalse
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Answer : 1. "Methyl alcohol "
Q: What is used of Capacitor in an electrical circuit?
2100 05ef431887c1ec61320b5ce2a
5ef431887c1ec61320b5ce2a- 1Step down voltagefalse
- 2Step up voltagefalse
- 3Store electric chargetrue
- 4Produce electric chargefalse
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Answer : 3. "Store electric charge"
Q: Which of the following is the softest?
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5eeb1496eee45c3b837b0312- 1Sodiumtrue
- 2Copperfalse
- 3Ironfalse
- 4Aluminumfalse
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Answer : 1. "Sodium"
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