JOIN ADRE 2.0 Telegram Group

P-Block Elements MCQs | P-Block Elements Multiple Choice Questions and Answers

Questions
1 Which statement correct about halogens?
A They are all diatomic and form univalent ions
B They are all capable of exhibiting several oxidation stables
C They are all diatomic and form diatomic ions
D They are all reducing agents

Answer: They are all diatomic and form univalent ions
2 Which one of the following is the strongest acid?
A SO (OH)2
B SO2(OH)2
C ClO2(OH)
D ClO3(OH)

Answer: ClO3(OH)
Advertisement
Article and Schedule Quiz Start Test!

DOWNLOAD CURRENT AFFAIRS PDF FROM APP

3 Fluorine react with water to give :
A Hydrogen fluoride and oxygen
B Hydrogen fluoride and ozone
C Hydrogen fluoride and oxygen fluoride
D Hydrogen fluoride, oxygen and ozone

Answer: Hydrogen fluoride, oxygen and ozone
4 Oxidising action increases from left to right in the order:
A Cl2 < Br2 < I2 < F2
B Cl2 < I2 < Br2 < F2
C I2 < F2 < Cl2 < Br2
D I2 < Br2 < Cl2 < F2

Answer: I2 < Br2 < Cl2 < F2
5 The solubility of iodine in water is greatly increased by :
A Adding an acid
B Boiling the solution
C Cooling the solution
D Adding potassium iodide

Answer: Adding potassium iodide
6 The correct statement is :
A SO2 is the anhydride of sulphurous acid
B H2S is the anhydride of hydrosulphuric acid
C NO2 is the anhydride of HNO3
D HCL is anhydride of HCl

Answer: SO2 is the anhydride of sulphurous acid
7 When excess of Kl is added to copper sulphate solution:
A Cuprous iodide is formed
B I2 is liberated
C Potassium iodide is oxidized
D all

Answer: all
8 Gaseous HCl is a poor conductor of electricity while its aqueous solution is a good conductor this is because :
A H2O is a good conductor of electricity
B a gas cannot conduct electricity, but a liquid can
C HCl gas does not obey ohm’s law; whereas the solution does
D HCl ionizes in aqueous solution

Answer: HCl ionizes in aqueous solution
9 Which reaction yield the greatest quantity of chlorine form a given quantity of hydrochloric acid ?
A Warming con, HCl with KMno2
B Warming con. HCl with pbO2
C Maxing conc. HCl with KMnO4
D Treating beaching powder with HCl

Answer: Treating beaching powder with HCl
10 Iodine is placed between two liquids C6H6 and water :
A It dissolve more in C6H6
B It dissolve more in water
C It dissolve equally in both
D Does not dissolve in both

Answer: It dissolve more in C6H6
11 If Cl2 gas is passed in to aqueous solution of Kl containing some CCl4 and the mixture is shaken then:
A Upper layer becomes violet
B Lower layer becomes violet
C Homogenous violet layer is formed
D None of these

Answer: Lower layer becomes violet
12 K2[HgI4] detect the ion/group :
A NH2
B NO
C NH4+
D Cl–

Answer: NH4+
13 Which pair give Cl2 at room temperature?
A conc. HCl + KMnO4
B NaCl + conc. H2SO4
C NaCl + MnO2
D NaCl + conc. NHO3

Answer: conc. HCl + KMnO4
14 Among the C – x bond (where X = Cl, Br, I) the correct bond energy order is:
A C – Cl > C – Br < C– I
B C – l > C – Cl > C – Br
C C – Br > C – Cl > C – I
D C – l > C – Br > C – CI

Answer: C – Cl > C – Br < C– I
15 The bonds present in N2O5 are:
A Only ionic
B Only covalentC
C Co-valent and co-ordinate
D Covalent and ionic

Answer: Co-valent and co-ordinate
16 Which of the following is/are paramagnetic:
A Only NO2
B NO2, NO
C NO, NO2, N2O5
D All are paramagnetic

Answer: NO2, NO
17 Nitrogen (I) oxide is produced by:
A Thermal decomposition of ammonium nitrate
B Disproportionation of N2O4
C Thermal decomposition of ammonium nitrite
D none of the above

Answer: Thermal decomposition of ammonium nitrate
18 The gas which does not show oxidising and bleaching property:
A Chlorine
B Ozone
C Sulphure dioxide
D Nitrocellulose is formed

Answer: Nitrocellulose is formed
19 Dinitrogen tetroxide N2O4, is mixed anhydride because it:
A Is mixture of N2O3 and N2O5
B Decomposes into two oxides of nitrogen reacts
C Reacts with water to form nitric acid
D Reacts with water to form two acid

Answer: Decomposes into two oxides of nitrogen reacts
20 Fixation of nitrogen means:
A Reaction of nitrogen with oxygen
B Conversion of free atmospheric nitrogen into nitrogen compound
C Decomposition of nitrogenous compounds to yield free nitrogen
D The action of denitrifying bacteria on nitrogen compound

Answer: The action of denitrifying bacteria on nitrogen compound

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!
Advertisement
Assam Direct Recruitment Test Series