EASY
11th Andhra Pradesh Board
IMPORTANT
Earn 100

Write balanced equation for the reaction between K2O and water.

Important Questions on The s -Block Elements

MEDIUM
11th Andhra Pradesh Board
IMPORTANT
Intermediate First Year Chemistry>Chapter 9 - The s -Block Elements>QUESTIONS>Q 29
Alkali metals and their salts impart characteristic colours to an oxidizing flame. Explain the reason.
MEDIUM
11th Andhra Pradesh Board
IMPORTANT
Intermediate First Year Chemistry>Chapter 9 - The s -Block Elements>QUESTIONS>Q 30
What makes caesium and potassium useful as electrodes in photoelectric cells?
HARD
11th Andhra Pradesh Board
IMPORTANT
Intermediate First Year Chemistry>Chapter 9 - The s -Block Elements>QUESTIONS>Q 31
Write a short note on the reactivity of alkali metals towards air.
MEDIUM
11th Andhra Pradesh Board
IMPORTANT
Intermediate First Year Chemistry>Chapter 9 - The s -Block Elements>QUESTIONS>Q 32

Give any two uses of lithium metal.

MEDIUM
11th Andhra Pradesh Board
IMPORTANT
Intermediate First Year Chemistry>Chapter 9 - The s -Block Elements>QUESTIONS>Q 32
Give any two uses of sodium metal.
HARD
11th Andhra Pradesh Board
IMPORTANT
Intermediate First Year Chemistry>Chapter 9 - The s -Block Elements>QUESTIONS>Q 33
Give an account of the properties of washing soda.
MEDIUM
11th Andhra Pradesh Board
IMPORTANT
Intermediate First Year Chemistry>Chapter 9 - The s -Block Elements>QUESTIONS>Q 34
Mention some uses of sodium carbonate.
HARD
11th Andhra Pradesh Board
IMPORTANT
Intermediate First Year Chemistry>Chapter 9 - The s -Block Elements>QUESTIONS>Q 35
How do you obtain pure sodium chloride from a crude sample?