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Published on: 29/08/2019
The p-Block Elements
Download CBSE Class 12th Standard CBSE Chemistry question papers, sample papers, important questions, and previous year solved papers in PDF format. Get free study materials, NCERT solutions, and exam preparation resources for Class 12th Standard CBSE Chemistry
Questions + Answers key
Take MCQ Chemistry Test
1.
Write one chemical reaction equation to show that conc. H2SO4 is a strong oxidising agent.
2.
Write one chemical reaction to show that chlorine gas can be obtained from bleaching powder.
3.
For H3PO3 and H3PO4, the correct choice is
H3PO3 is dibasic and reducing
H3PO4 is dibasic and non-reducing
H3PO4 is tribasic and reducing
H3PO3 is tribasic and non-reducing
4.
Which of the following elements is kept in water?
White P
Na
S
Si
5.
The element which forms oxides in all oxidation states +I to +V is
N
P
As
Sb
6.
Which of the following on heating does not give nitrogen gas?
NH4NO3
NH4NO2
Ba(N3)2
(NH4)2Cr2O7
7.
Which of the following does not form a pentachloride?
P
As
Sb
N
8.
Pb3O4
9.
XeF4
10.
XeOF4
11.
XeO3
12.
XeF6
1.
( )
C + 2H2SO4(conc.) \(\rightarrow\) CO2 + 2H2O + 2SO2
2.
( )
CaOCL2 + 2HCl \(\rightarrow\) CaCl2 + H2O + Cl2
3.
(a)
H3PO3 is dibasic and reducing
4.
(a)
White P
5.
(a)
N
6.
(a)
NH4NO3
7.
N does not have d-orbitals in the valence shell
8.
( )
Mixed oxide
9.
( )
Sp3d2-square planer
10.
( )
sp3d2-square pyramidal
11.
( )
Sp3-pyramidal
12.
( )
Sp3d3-distorted octahedral
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