HARD
11th CBSE
IMPORTANT
Earn 100

Match the Columns :
Column I Column II 
(A) Syngas (p) Causes sequestration of Ca2+and Mg2+ions
(B) Hydride gap (q) Repeated electrolysis of water 
(C) Calgon (r) Elements of groups 7, 8 and 9 
(D) Heavy water (s) CO + H2

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Important Questions on Hydrogen

HARD
11th CBSE
IMPORTANT
Pradeep's New Course CHEMISTRY Vol.II>Chapter 9 - Hydrogen>Competition Focus>Q 79

Match Type Questions

Column I (Hydride) Column II (Type of hydride)
(A) BeH2 (p) Complex
(B) AsH3 (q) Interstitial
(C) LaH3 (r) Covalent
(D) LiAlH4 (s) Polymeric

 

HARD
11th CBSE
IMPORTANT
Pradeep's New Course CHEMISTRY Vol.II>Chapter 9 - Hydrogen>Competition Focus>Q 80

Matching Type Questions

Column I (Hydride) Column II (Boiling point)
(A) NH3 (p) 211K
(B) PH3 (q) 186K
(C) AsH3 (r) 256 K
(D) SbH3 (s) 240K

 

HARD
11th CBSE
IMPORTANT
Pradeep's New Course CHEMISTRY Vol.II>Chapter 9 - Hydrogen>Competition Focus>Q 88
A 5.0 cm3solution of H2O2 liberates 0.508 g of iodine from an acidified KI solution. Calculate the strength
of H2O2 solution in terms of volume strength at STP.