Download PDF
Free download in PDF Multiple Choice Questions (MCQs) with Answers on Class 12 Chemistry Chapter 7 p Block Elements for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams like NEET, AIIMS, JIPMER etc. These short solved questions or quizzes are provided by Gkseries./p>
(1)
Which of following after reacting with KI do not remove Iodine
[A]
CaSO4
[B]
K2Cr2O7
[C]
HNO3
[D]
HCl
(2)
Aqueous solution of which of following acid can not be kept in bottle of glass
[A]
HF
[B]
HCl
[C]
HBr
[D]
HI
(3)
Which of following pair is not correctly matched
[A]
Halogen which is liquid at room temp. - Bromine
[B]
Most electronegative element - Fluorine
[C]
Most reactive halogen - Flouorine
[D]
The Strorgest oxidizing halogen - Iodine
Answer: The Strorgest oxidizing halogen - Iodine
(4)
Mark element that shows oxidation state only one
[A]
F
[B]
Cl
[C]
Br
[D]
I
(5)
Which of following has lowest boiling point
[A]
HF
[B]
HCl
[C]
HBr
[D]
HI
(6)
Fluorine is stronger oxidizing agent than chlorine in aqueous solution. This is attributed to many factors except.
[A]
Heat of dissociation
[B]
e-affinity
[C]
Heat of Hydration
[D]
Ionisation Potential
(7)
Mark the element that displaces 3 halogens from their compound
[A]
F
[B]
Cl
[C]
Br
[D]
I
(8)
Mark smallest atom
[A]
F
[B]
Si
[C]
Ge
[D]
pb
(9)
Which of following arrangement for 3 halogens Cl, Br, I when placed in order of increasing e-affinity
[A]
Cl, Br, I
[B]
I, Br, Cl
[C]
Br, Cl, I
[D]
I, Cl, Br
(10)
Fluorine is better oxidizing agent than Br2 , It is due to
[A]
small size of F
[B]
More e - repulsion in F
[C]
More e– neg. in F
[D]
Non - Metallic nature of F
Answer: More e– neg. in F
(11)
Which statement is correct about halogens?
[A]
They are all diatomic
[B]
They are forming universal solvents
[C]
They can mutually displace each other from solution of their compound with metals
[D]
None of above
Answer: They can mutually displace each other from solution of their compound with metals
(12)
Which of following is most basic?
[A]
I
[B]
Br
[C]
Cl
[D]
F
(13)
Which of following is not a green house gas?
[A]
CO2
[B]
CH4
[C]
O3
[D]
N2X
(14)
Inisolation of F., a number of difficulties were encounted. Which statement is correct?
[A]
Potential required for discharge of F. ions is the lowest
[B]
F. reacts with most glass vessel
[C]
F has great affinity for H
[D]
Electrolysis of aqueous HF gives ozonised O2
Answer: Electrolysis of aqueous HF gives ozonised O2
(15)
Chlorin gas is dried over
[A]
CaO
[B]
NaOH
[C]
KOH
[D]
Conc. H2SO4
(16)
Chlorine is used in water for
[A]
Killing germs
[B]
Prevention of pollution
[C]
Cleansing
[D]
Removing dirt
(17)
Chlorine can not be used
[A]
As bleaching agent
[B]
Sterilisation
[C]
Preparation of antiseptic
[D]
Extraction of silver & copper
Answer: Extraction of silver & copper
(18)
Euchlorine is mixture of
[A]
Cl2 & SO2
[B]
Cl2 & ClO2
[C]
Cl2 & CO
[D]
None of these
(19)
Which two salts are used in preparing iodised salt.
[A]
KIO3 & I2
[B]
KI & I2
[C]
KIO3 & HI
[D]
HI & KI
(20)
Type of bonding in HCl is
[A]
Pure Covalent
[B]
Polar Covalent
[C]
Highly Covalent
[D]
H - bonding
Take Mock Tests
Chapters