Viraf J Dalal Chemistry Class 9. We covered all the Viraf J Dalal Chemistry Class 9 in this post for free so that you can practice well for the exam.
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Viraf J Dalal Chemistry Class 9 Objective for Students
The number of np electrons in the outer shell of elements of group 17 is
(A) Five
(B) Three
(C) Four
(D) Seven
Option a – Five
Which of the following sets of elements is known as halogens?
(A) Li, Na, K
(B) F, Cl, Br
(C) He, Ne, Ar
(D) Cu, Ag, Au
Option b – F, Cl, Br
Which of the following is known as super halogens?
(A) Cl₂
(B) Br2
(C) F2
(D) I2
Option c – F2
The formula of carnallite is
(A) KCI, MgCl2 6H₂O
(B) AgCl, MgBr₂ 7H₂O
(C) NaCl, MgC12.5H₂O
(D) FeSO4, (NH4)2SO4.7H₂O
Option a – KCI, MgCl2 6H₂O
Which of the following has the highest boiling point?
(A) F2
(B) I2
(C) Cl₂
(D) Br2
Option b – I2
The halogen bond length is the longest for
(A) F2
(B) Cl₂
(C) Br2
(D) I2
Option d – I2
Which of the following has one lone pair of electrons?
(A) IF3
(B) KI
(C) CIF3
(D) IF5
Option d – IF5
Among the known interhalogen compounds, the maximum number of atoms is
(A) 3
(B) 6
(C) 7
(D) 8
Option d – 8
Which of the following has the highest electron gain enthalpy?
(A) Fluorine
(B) Chlorine
(C) Bromine
(D) Iodine
Option b – Chlorine
HI acid when heated with conc. H₂SO4 forms
(A) HIO3
(B) KIO3
(C) I2
(D) KI
Option c – I2
Which of the following occurs in a liquid state at room temperature?
(A) HIO3
(B) HBr
(C) HCI
(D) HF
Option d – HF
The stability of inter-halogen compounds follows the order
(A) BrF> IBr > ICI > CIF > BrCl
(B) FBr> BrF> ICI > CIF > BrCl
(C) CIF > ICI > FBr > IBr> BrF
(D) ICI > CIF > BrCl > IBr > BrF
Option c – CIF > ICI > FBr > IBr> BrF
BrCl reacts with water to form
(A) HBr
(B) Br₂ + Cl₂
(C) HOBr
(D) HOBr + HCl
Option d – HOBr + HCl
Chlorine reacts with an excess of fluorine to form
(A) CIF
(B) CIF3
(C) CIF2
(D) Cl₂F3
Option b – ClF3
In interhalogen compounds, which of the following halogens is never the central atom?
(A) I
(B) Cl
(C) Br
(D) F
Option d – F
Chlorine is obtained by the electrolysis of…P…. and is liberated at ….Q…. Here P and Q refer to
(A) NaCl – P Q – Anode
(B) Brine – P, Q – Anode
(C) Brine – P, Q – Cathode
(D) NaCl-P, Q-Cathode
Option b – Brine – P, Q – Anode
A metal, M forms chlorides in +2 and +4 oxidation states. Which of the following statements about these chlorides is correct?
(A) MC₂ is more volatile than MCl4
(B) MC12 is more soluble in anhydrous ethanol than MCl4
(C) MCl₂ is more ionic than MCl4
(D) MC12 is more hydrolysed than MCl4
Option c – MCl₂ is more ionic than MCl4
In IF7, iodine is the following state of hybridization
(A) sp³d³
(B) dsp³
(C) dsp³
(D) sp³d²
Option a – sp³d³
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