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Published on: 01/09/2022
QB365 provides a detailed and simple solution for every Possible Book Back Questions in Class 12 Chemistry Subject - p - Block Elements - I, English Medium. It will help Students to get more practice questions, Students can Practice these question papers in addition to score best marks.
Download Tamil Nadu 12th Standard Chemistry question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.
Questions + Answers key
Take MCQ Chemistry Test
1.
The stability of +1 oxidation state increases in the sequence ________.
Al < Ga < In < Tl
Tl < In < Ga < Al
In < Tl < Ga < Al
Ga< In < Al < Tl
2.
The compound that is used in nuclear reactors as protective shields and control rods is _________.
Metal borides
metal oxides
Metal carbonates
metal carbide
3.
Duralumin is an alloy of ______.
Cu, Mn
Cu, Al, Mg
Al, Mn
Al, Cu, Mn, Mg
4.
| Column-I | Column-II | ||
| A | Borazole | 1 | B(OH)3 |
| B | Boric acid | 2 | B3N3H6 |
| C | Quartz | 3 | Na2[B4O5(OH)4]8H2O |
| D | Borax | 4 | SiO2 |
| A | B | C | D |
| 2 | 1 | 4 | 3 |
| A | B | C | D |
| 1 | 2 | 4 | 3 |
| A | B | C | D |
| 1 | 2 | 4 | 3 |
None of these
5.
Which of the following statements is not correct?
Beryl is a cyclic silicate
Mg2SiO4 is an orthosilicate
SiO44−is the basic structural unit of silicates
Feldspar is not aluminosilicate
6.
The geometry at which carbon atom in diamond are bonded to each other is _______.
Tetrahedral
hexagonal
Octahedral
none of these
7.
Which of the following is not sp2 hybridised?
Graphite
graphene
Fullerene
dry ice
8.
Which of these is not a monomer for a high molecular mass silicone polymer?
Me3SiCl
PhSiCl3
MeSiCl3
Me2SiCl2
9.
The repeating unit in silicone is_______.
SiO2
10.
The basic structural unit of silicates is _______.
\(\left( SiO_{ 3 } \right) ^{ 2- }\)
\(\left( SiO_{ 4 } \right) ^{ 2- }\)
\(\left( Sio \right) ^{ - }\)
\(\left( SiO_{ 4 } \right) ^{ 4- }\)
11.
Oxidation state of carbon in its hydrides _______.
+4
-4
+3
+2
12.
Carbon atoms in fullerene with formula C60 have _______hybridisation.
sp3 hybridised
sp hybridised
sp2 hybridised
partially sp2 and partially sp3 hybridised
13.
The element that does not show catenation among the following p-block elements is ________.
Carbon
silicon
Lead
germanium
14.
In diborane, the number of electrons that accounts for banana bonds is ________.
six
two
four
three
15.
Which of the following metals has the largest abundance in the earth’s crust?
Aluminium
Calcium
Magnesium
Sodium
16.
Which among the following is not a borane?
B2H6
B3H6
B4H10
none of these
17.
18.
An aqueous solution of borax is________.
neutral
acidic
basic
amphoteric
1.
(a)
Al < Ga < In < Tl
2.
(a)
Metal borides
3.
(d)
Al, Cu, Mn, Mg
4.
(a)
| A | B | C | D |
| 2 | 1 | 4 | 3 |
5.
(d)
Feldspar is not aluminosilicate
6.
(a)
Tetrahedral
7.
(d)
dry ice
8.
(a)
Me3SiCl
9.
(b)
10.
(d)
\(\left( SiO_{ 4 } \right) ^{ 4- }\)
11.
(a)
+4
12.
(c)
sp2 hybridised
13.
(c)
Lead
14.
(c)
four
15.
(a)
Aluminium
16.
(b)
B3H6
17.
(d)
18.
(c)
basic
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