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Which of the following is used in the photoelectric cells?
 

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Important Questions on The s-Block Elements

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Alpha Question Bank for Engineering: Chemistry>Chapter 16 - The s-Block Elements>Exercise-4>Q 34
The chemistry of Li is very similar to that of Mg even though they belong to different groups. This is due to the fact that-
 
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Alpha Question Bank for Engineering: Chemistry>Chapter 16 - The s-Block Elements>Exercise-4>Q 35
Fire extinguisher contains H2SO4 and:
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Alpha Question Bank for Engineering: Chemistry>Chapter 16 - The s-Block Elements>Exercise-4>Q 36
Washing soda is manufactured by:

 
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Alpha Question Bank for Engineering: Chemistry>Chapter 16 - The s-Block Elements>Exercise-4>Q 39
Portland cement is:
 
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Alpha Question Bank for Engineering: Chemistry>Chapter 16 - The s-Block Elements>Exercise-4>Q 40
Crystals of washing soda lose nine molecules of water when exposed to dry air. This phenomenon is known as:
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Alpha Question Bank for Engineering: Chemistry>Chapter 16 - The s-Block Elements>Exercise-4>Q 41
Bleaching powder is made by passing Cl2 into slaked lime. Its formula is:
 
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Alpha Question Bank for Engineering: Chemistry>Chapter 16 - The s-Block Elements>Exercise-4>Q 42
The metal that shows photoelectric emission at lowest frequency radiation is:
 
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Alpha Question Bank for Engineering: Chemistry>Chapter 16 - The s-Block Elements>Exercise-4>Q 45

The crimson colour imparted to flame is due to a salt of: