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Solder is an alloy of _____

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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 135
Electric bulbs are usually filled with chemically-inactive gases like _____.
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RPF Constable CBT 1
IMPORTANT
Railway General Awareness Book>Chapter 49 - Chemistry>Practice Exercise>Q 136
In the modern periodic table, which of the following periods has the maximum number of non-metals?
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RPF Constable CBT 1
IMPORTANT
Railway General Awareness Book>Chapter 49 - Chemistry>Practice Exercise>Q 137
Which of these is not an alkaline earth metal? 
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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 _____.
EASY
RPF Constable CBT 1
IMPORTANT
Railway General Awareness Book>Chapter 49 - Chemistry>Practice Exercise>Q 141
The atomic number of lanthanum is _____.
EASY
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?