Chemistry Practice Question and Answer
8 4 Q:
5ee35e7455d51a0f6482cd3c 4 Q:
5f0ecf31b6738d790d13d1ea 4 Q:
6127662693f02206607f017f 4 Q:
650ab26a63078e50a28c8adb Answer : 2. "If it has more electrons than neutrons"
4 Q:
5eeadf0fad25df5a63247e87 4 Q:
5feb0909f33a00432aff0fc3 4 Q:
5f697aa5397b1a52908bfe4f 4 Q:
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Q: What is the mass number of an element, the atom of which contains two Protons, two neutrons and two electrons?
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5ee35e7455d51a0f6482cd3c- 12false
- 24true
- 36false
- 48false
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Answer : 2. "4 "
Q: The atoms, in which the number of Protons is same but the number of neutrons is different, are known as –
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5f0ecf31b6738d790d13d1ea- 1Isotonesfalse
- 2Isotopestrue
- 3Isobarsfalse
- 4Isomersfalse
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Answer : 2. "Isotopes"
Q: Which of the following properties is not often present in organic compounds?
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6127662693f02206607f017f- 1soluble in watertrue
- 2low melting pointfalse
- 3flammabilityfalse
- 4allfalse
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Answer : 1. "soluble in water"
Q: Which of the following will be a negative ion?
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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: How many categories of elements are divided on the basis of properties?
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5eeadf0fad25df5a63247e87- 14false
- 26false
- 33true
- 42false
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Answer : 3. "3"
Q: Thin wires can be pulled from a metal piece. For which property of the metal is it responsible?
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5feb0909f33a00432aff0fc3- 1Tensiletrue
- 2hardnessfalse
- 3Malignancyfalse
- 4conductivityfalse
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Answer : 1. "Tensile"
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: If an alloy contains a metal mercury, what is it called?
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6127659a93f02206607ef8f6- 1mercury alloyfalse
- 2Iron Alloyfalse
- 3Amalgamtrue
- 4Zinc Alloyfalse
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Answer : 3. "Amalgam"
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