The major product formed in the following reaction is
Choose the correct answer from the options given below :
Answer
(B)
B only
3
Compound 'B' is
Answer
(A)
4
Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A : $$\left[\mathrm{CoCl}\left(\mathrm{NH}_{3}\right)_{5}\right]^{2+}$$ absorbs at lower wavelength of light with respect to $$\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{5}\left(\mathrm{H}_{2} \mathrm{O}\right)\right]^{3+}$$
Reason R : It is because the wavelength of the light absorbed depends on the oxidation state of the metal ion.
In the light of the above statements, choose the correct answer from the options given below:
Answer
(A)
$$\mathrm{A}$$ is false but $$\mathrm{R}$$ is true
5
If $$\mathrm{Ni}^{2+}$$ is replaced by $$\mathrm{Pt}^{2+}$$ in the complex $$\left[\mathrm{NiCl}_{2} \mathrm{Br}_{2}\right]^{2-}$$, which of the following properties are expected to get changed ?
A. Geometry
B. Geometrical isomerism
C. Optical isomerism
D. Magnetic properties
Answer
(B)
A, B and D
6
Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A : A solution of the product obtained by heating a mole of glycine with a mole of chlorine in presence of red phosphorous generates chiral carbon atom.
Reason R : A molecule with 2 chiral carbons is always optically active.
In the light of the above statements, choose the correct answer from the options given below:
Answer
(C)
A is true but R is false
7
Match List I with List II
LIST I Complex
LIST II Colour
A.
$$Mg(N{H_4})P{O_4}$$
I.
brown
B.
$${K_3}[Co{(N{O_2})_6}]$$
II.
white
C.
$$MnO{(OH)_2}$$
III.
yellow
D.
$$F{e_4}{[Fe{(CN)_6}]_3}$$
IV.
blue
Choose the correct answer from the options given below :
Answer
(B)
A-II, B-III, C-I, D-IV
8
What weight of glucose must be dissolved in $$100 \mathrm{~g}$$ of water to lower the vapour pressure by $$0.20 \mathrm{~mm} ~\mathrm{Hg}$$ ?
(Assume dilute solution is being formed)
Given : Vapour pressure of pure water is $$54.2 \mathrm{~mm} ~\mathrm{Hg}$$ at room temperature. Molar mass of glucose is $$180 \mathrm{~g} \mathrm{~mol}^{-1}$$
Answer
(A)
3.69 g
9
A solution is prepared by adding $$2 \mathrm{~g}$$ of "$$\mathrm{X}$$" to 1 mole of water. Mass percent of "$$\mathrm{X}$$" in the solution is :
Answer
(B)
10%
10
Compound from the following that will not produce precipitate on reaction with $$\mathrm{AgNO}_{3}$$ is :
Answer
(B)
11
The magnetic moment is measured in Bohr Magneton (BM).
Spin only magnetic moment of $$\mathrm{Fe}$$ in $$\left[\mathrm{Fe}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{3+}$$ and $$\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{3-}$$ complexes respectively is :
Answer
(B)
5.92 B.M. and 1.732 B.M.
12
Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R.
In the light of the above statements, choose the correct answer from the options given below:
Answer
(B)
A is false but R is true
13
For a chemical reaction $$\mathrm{A}+\mathrm{B} \rightarrow$$ Product, the order is 1 with respect to $$\mathrm{A}$$ and $$\mathrm{B}$$.
$$\mathrm{Rate}$$ $$\mathrm{mol~L^{-1}~S^{-1}}$$
$$\mathrm{[A]}$$ $$\mathrm{mol~L^{-1}}$$
$$\mathrm{[B]}$$ $$\mathrm{mol~L^{-1}}$$
0.10
20
0.5
0.40
$$x$$
0.5
0.80
40
$$y$$
What is the value of $$x$$ and $$y$$ ?
Answer
(C)
80 and 2
14
Product [X] formed in the above reaction is :
Answer
(B)
15
The number of possible isomeric products formed when 3-chloro-1-butene reacts with $$\mathrm{HCl}$$ through carbocation formation is __________.
Answer
4
16
The maximum number of lone pairs of electrons on the central atom from the following species is ____________.
$$\mathrm{ClO}_{3}{ }^{-}, \mathrm{XeF}_{4}, \mathrm{SF}_{4}$$ and $$\mathrm{I}_{3}{ }^{-}$$
Answer
3
17
The total number of intensive properties from the following is __________
The number of correct statements from the following is ___________.
A. For $$1 \mathrm{s}$$ orbital, the probability density is maximum at the nucleus
B. For $$2 \mathrm{s}$$ orbital, the probability density first increases to maximum and then decreases sharply to zero.
C. Boundary surface diagrams of the orbitals encloses a region of $$100 \%$$ probability of finding the electron.
D. p and d-orbitals have 1 and 2 angular nodes respectively.
E. probability density of p-orbital is zero at the nucleus
Answer
3
20
4.5 moles each of hydrogen and iodine is heated in a sealed ten litre vessel. At equilibrium, 3 moles of $$\mathrm{HI}$$ were found. The equilibrium constant for $$\mathrm{H}_{2}(\mathrm{~g})+\mathrm{I}_{2}(\mathrm{~g}) \rightleftharpoons 2 \mathrm{HI}(\mathrm{g})$$ is _________.
Answer
1
21
The number of correct statements from the following is __________
A. $$\mathrm{E_{\text {cell }}}$$ is an intensive parameter
B. A negative $$\mathrm{E}^{\ominus}$$ means that the redox couple is a stronger reducing agent than the $$\mathrm{H}^{+} / \mathrm{H}_{2}$$ couple.
C. The amount of electricity required for oxidation or reduction depends on the stoichiometry of the electrode reaction.
D. The amount of chemical reaction which occurs at any electrode during electrolysis by a current is proportional to the quantity of electricity passed through the electrolyte.
Answer
4
22
The volume of hydrogen liberated at STP by treating $$2.4 \mathrm{~g}$$ of magnesium with excess of hydrochloric acid is _________ $$\times ~10^{-2} \mathrm{~L}$$
Given : Molar volume of gas is $$22.4 \mathrm{~L}$$ at STP.
Molar mass of magnesium is $$24 \mathrm{~g} \mathrm{~mol}^{-1}$$
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