JOIN ADRE 2.0 Telegram Group

Class 12 Chemistry Chapter 7 p Block Elements MCQs | Class 12 Chemistry Chapter 7 p Block Elements Multiple Choice Questions (MCQs) with Answers

Questions
1 SiF4 gets hydrolysed gives
A SiO2
B Si(OH)2F2
C H2SiF6
D Si(OH)4

Answer:Si(OH)4
2 Which of the following statements is incorrect
A Silicon is extensively used as a semiconductor
B Carborandum is SiC
C Silicon occurs in free state in nature
D Mica contains the element silicon

Answer:Silicon occurs in free state in nature
3 Silicon is an important constituent of
A Rocks
B Amalgams
C Chlorophyll
D Haemoglobin

Answer: Rocks
4 The number of unpaired electrons in carbon atom is
A 1
B 2
C 3
D 4

Answer:2
5 Colour is imparted to glass by mixing
A Synthetic gas
B Metal oxide
C Oxide of non - metal
D Coloured Salt

Answer: Metal oxide
6 Which of the following glass is used in making wind screen of automobiles.
A Crook's Glass
B Jena Glass
C Safety Glass
D Pyrex Glass

Answer:Safety Glass
7 Which of the following is insoluble in water
A Na2CO3
B CaCO3
C ZnCO3
D Al2(CO3)3

Answer:Al2(CO3)3
8 In which of the following the inert pair effect is most prominent
A C
B Si
C Ge
D pb

Answer:pb
9 Plumbosoluancy implies dissolution of lead in
A Bases
B Acids
C Ordinary Water
D CuSO4

Answer:Ordinary Water
10 Which of the following glass is used to make lenses and prisms
A Flint
B Jena
C Pyrex
D Quartz

Answer:Flint
11 N2 gas is absorbed by
A Calcium hydroxide
B Ferrous sulphate
C Calcium Carbide
D Aluminium Carbide

Answer:Calcium Carbide
12 White lead is
A PbCO3
B PbCO3. PbO
C 2PbCO3.Pb(OH)2
D 2PbSO4. PbO

Answer: 2PbCO3.Pb(OH)2
13 Red lead is
A Pb3O4
B PbO
C PbO2
D Pb4O3

Answer: Pb3O4
14 Name of the structure of silicates in which three oxygen atoms of [SiO4]4– are shared is
A pyrosilicate
B Sheet Silicate
C Linear chain Silicates
D Three dimensional Silicate

Answer: Three dimensional Silicate
15 A metal used in storage battries is
A Copper
B Lead
C Tin
D Nickel

Answer:Lead
16 Solder is an alloys of
A Pb+Zn+Sn
B Pb+Zn
C Pb+Sn
D Sn+Zn

Answer: Pb+Sn
17 Which of the following statement is correct with respect ot the property of elements in the carbon Family with an increase in atomic number their.
A Atomic size decreases
B Ionization energy increases
C Metallic character decreases
D Stability of +2 oxidation state increases

Answer: Stability of +2 oxidation state increases
18 Lapis lazuli is
A Ferrous sulphate
B Copper Sulphate
C Sodium Alumino Silicate
D Zinc Sulphate

Answer:Sodium Alumino Silicate
19 'Lead pencil' contains
A PbS
B Graphite
C FeS
D Pb

Answer: Graphite
20 Diamond is harder than graphite because
A Graphite is planar
B Diamond has free electron
C Graphite is sp3 hybridized
D None

Answer: Diamond has free electron

ADRE 2.0 FULL LENGTH MOCK TEST

Take Mock Tests

Missiles Mock Test Start Test!
SSC MTS Mock Test Start Test
IBPS CLERK MOCK TEST Start Test
SSC MTS 2022 JULY 26 Shift 1 (ENGLISH) Start Test!
SSC GD Previous Year Paper 2021 Nov 17 Shift - I (Hindi) Start Test!
SSC CGL Tier - 1 PYP 2022 April 21 Shift- 1 (ENGLISH) Start Test!
MPSC PAPER I MOCK TEST 1 (ENGLISH) Start Test!
IB Security Assistant Mock test 1 (english) Start Test!
UP POLICE CONSTABLE MOCK TEST 1 Start Test!
DELHI POLICE CONSTABLE MOCK TEST 1 (HINDI) Start Test!

Chapters

Advertisement
Assam Direct Recruitment Test Series