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RPF Constable CBT 1
IMPORTANT
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Which of these is not an alkaline earth metal? 

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Important Questions on Chemistry

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RPF Constable CBT 1
IMPORTANT
Railway General Awareness Book>Chapter 49 - Chemistry>Practice Exercise>Q 138
Which of the following classification of elements is based on atomic numbers? 
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RPF Constable CBT 1
IMPORTANT
Railway General Awareness Book>Chapter 49 - Chemistry>Practice Exercise>Q 139
Who classified elements based on atomic numbers?
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RPF Constable CBT 1
IMPORTANT
Railway General Awareness Book>Chapter 49 - Chemistry>Practice Exercise>Q 140
An element has electronic configuration 2, 8, 6. It belongs to _____.
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RPF Constable CBT 1
IMPORTANT
Railway General Awareness Book>Chapter 49 - Chemistry>Practice Exercise>Q 141
The atomic number of lanthanum is _____.
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RPF Constable CBT 1
IMPORTANT
Railway General Awareness Book>Chapter 49 - Chemistry>Practice Exercise>Q 142
Which of the following is not an electronic configuration of a metal? 
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RPF Constable CBT 1
IMPORTANT
Railway General Awareness Book>Chapter 49 - Chemistry>Practice Exercise>Q 143
The elements present in any one group have the same _____ .
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RPF Constable CBT 1
IMPORTANT
Railway General Awareness Book>Chapter 49 - Chemistry>Practice Exercise>Q 144
Group 1 elements are called _____ .
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RPF Constable CBT 1
IMPORTANT
Railway General Awareness Book>Chapter 49 - Chemistry>Practice Exercise>Q 145
The elements with atomic number 57 belongs to _____ .