Chlorine water on standing loses its yellow colour due to the formation of
a) Cl and HOCl.
b) HCl and HOCl.
c) HOCl and \(HOCl_2\).
d) HCl and \(HOCl_2\).
a) Cl and HOCl.
b) HCl and HOCl.
c) HOCl and \(HOCl_2\).
d) HCl and \(HOCl_2\).
b) HCl and HOCl.
Hypochlorous acid and perchloric acid are, respectively:
a) HOCl and \(HClO_4\).
b) HOCl and \(HClO_3\).
c) \(HClO_2\) and \(HClO_3\).
d) \(HClO_2\) and \(HClO_4\).
Identify the correct order of acidic strength for H-X
a) HCl > HBr > HI.
b) HCl > HI > HBr.
c) HI > HCl > HBr.
d) HI > HBr > HCl.
When Xe reacts with Fluorine in 1:5 ratio at 873 K it forms
a) \(XeF_2\)
b) \(XeF_4\)
c) \(XeF_6\)
d) \(XeOF_4\)
The lowest boiling point of helium is due to its
a) Inertness
b) Gaseous nature
c) Weak van der Waals force between atoms
d) electronic configuration
On a large-scale nitric acid is prepared mainly by
a) Haber's process
b) Ostwald’s process
c) Contact Process
d) Deacon's process
Stability of hydrides of group 16 elements
a) increases down the group
b) decreases down the group
c) all hydrides are equally stable
d) none of the above
\(SO_2\) is ----------and \(TeO_2\) is -------- agent
a) reducing, an oxidising
b) an oxidising, reducing
c) reducing, reducing
d) an oxidising, an oxidising
Which of the following is an amorphous solid?
(A) Graphite (G)
(B) Quartz glass (SiO2)
(C) Chrome alum
(D) Silicon carbide (SiC)
Which of the following is not true about the ionic solids?
(A) Bigger ions form the close packed structure.
(B) Smaller ions occupy either the tetrahedral or the octahedral voids depending upon their size.
(C) Occupation of all the voids is not necessary.
(D) The fraction of octahedral or tetrahedral voids occupied depends upon the radii of the ions occupying the voids.
Which of the following is incorrect for an ideal solution?
(a) \(∆H_{mix}\) =0
(b) \(∆V_{mix}\) = 0
(c) ∆P = \(P_{obs}\) – \(P_{calculated}\) = 0
(d) \(∆G_{mix}\) = 0
Which of the following alcohols will give the most stable carbocation during dehydration?
(a) 2-methyl-1-propanol.
(b) 2-methyl-2-propanol.
(c) 1-Butanol.
(d) 2-Butanol.
Chlorobenzene is formed by reaction of chlorine with benzene in the presence of \(AlCl_3\). Which of the following species attacks the benzene ring in this reaction?
(a) \(Cl^+\)
(b) \(Cl^-\)
(c) \(AlCl_3\)
(d) \({[\\(AlCl_4\\)]}^-\)
Acetone and carbon disulphide form binary liquid solution showing positive deviation from Raoult’s law. The normal boiling point (Tb) of pure acetone is less than that of pure \(CS_2\). Pick out the
incorrect statement among the following-
(a) Boiling temperature of the mixture is always less than the boiling temperature of acetone
(b) Boiling temperature of Azeotropic mixture is always less than the boiling temperature of acetone
(c) When a small amount of \(CS_2\) (less volatile component) is added to an excess of acetone boiling point
of the resulting mixture increases
(d) A mixture of \(CS_2\) and \(CH_3\)\(COCH_3\) can be completely separated by simple fractional distillation
Molecules whose mirror image is non-superimposable over them are known as chiral. Which of the following molecules is chiral in nature?
(a) 2-Bromobutane.
(b)1-Bromobutane.
(c) 2-Bromopropane.
(d) 2-Bromopropan-2-ol.