Arrange the following coordination compounds in the increasing order of magnetic moments. (Atomic numbers : Mn = 25; Fe = 26)
A. [FeF6]3$$-$$
B. [Fe(CN)6]3$$-$$
C. [MnCl6]3$$-$$ (high spin)
D. [Mn(CN)6]3$$-$$
Choose the correct answer from the options given below :
Answer
(B)
B < D < C < A
8
Which of the following is most stable?
Answer
(A)
9
What will be the major product of following sequence of reactions?
Answer
(C)
10
Product 'A' of following sequence of reactions is
Answer
(D)
11
Match List-I with List-II.
List-I
List-II
(A)
I.
$$B{r_2}$$ in $$C{S_2}$$
(B)
II.
$$N{a_2}C{r_2}{O_7}/{H_2}S{O_4}$$
(C)
III.
$$Zn$$
(D)
IV.
$$CHC{l_3}/NaOH$$
Choose the correct answer from the options given below :
Answer
(A)
A-IV, B-III, C-II, D-I
12
Decarboxylation of all six possible forms of diaminobenzoic acids C6H3(NH2)2COOH yields three products A, B and C. Three acids give a product 'A', two acids gives a product 'B' and one acid give a product 'C'. The melting point of product 'C' is
Answer
(D)
142$$^\circ$$C
13
Given below are two statements.
Statement I : Maltose has two $$\alpha$$-D-glucose units linked at C1 and C4 and is a reducing sugar.
Statement II : Maltose has two monosaccharides : $$\alpha$$-D-glucose and $$\beta$$-D-glucose linked at C1 and C6 and it is a non-reducing sugar.
In the light of the above statements, choose the correct answer from the options given below :
Answer
(C)
Statement I is true but Statement II is false.
14
Match List I with List II.
List-I (Anion)
List-II (gas evolved on reaction with dil.H$$_2$$SO$$_2$$)
(A)
CO$${_3^{2 - }}$$
I.
Colourless gas which turns lead acetate paper black.
(B)
S$$^{2 - }$$
II.
Colourless gas which turns acidified potassium dichromate solution green.
(C)
SO$${_3^{2 - }}$$
III.
Brown fumes which turns acidified KI solution containing starch blue.
(D)
NO$${_2^ - }$$
IV.
Colourless gas evolved with brisk effervescence, which turns lime water milky.
Choose the correct answer from the options given below :
Answer
(D)
A-IV, B-I, C-II, D-III
15
116 g of a substance upon dissociation reaction, yields 7.5 g of hydrogen, 60 g of oxygen and 48.5 g of carbon. Given that the atomic masses of H, O and C are 1, 16 and 12, respectively. The data agrees with how many formulae of the following?
A. CH3COOH, B. HCHO, C. CH3OOCH3, D. CH3CHO
Answer
2
16
Consider the following set of quantum numbers.
n
1
m$$_1$$
A.
3
3
$$ - $$3
B.
3
2
$$ - $$2
C.
2
1
+1
D.
2
2
+2
The number of correct sets of quantum numbers is __________.
Answer
2
17
When 5 moles of He gas expand isothermally and reversibly at 300 K from 10 litre to 20 litre, the magnitude of the maximum work obtained is __________ J. [nearest integer] (Given : R = 8.3 J K$$-$$1 mol$$-$$1 and log 2 = 0.3010)
Answer
8630
18
A solution containing 2.5 $$\times$$ 10$$-$$3 kg of a solute dissolved in 75 $$\times$$ 10$$-$$3 kg of water boils at 373.535 K. The molar mass of the solute is ____________ g mol$$-$$1. [nearest integer] (Given : Kb(H2O) = 0.52 K kg mol$$-$$1 and boiling point of water = 373.15 K)
Answer
45
19
pH value of 0.001 M NaOH solution is ____________.
Answer
11
20
For the reaction taking place in the cell :
Pt (s)| H2 (g)|H+(aq) || Ag+(aq) |Ag (s)
E$$_{cell}^o$$ = + 0.5332 V.
The value of $$\Delta$$fG$$^\circ$$ is ______________ kJ mol$$-$$1. (in nearest integer)
Answer
51OR103
21
It has been found that for a chemical reaction with rise in temperature by 9 K the rate constant gets doubled. Assuming a reaction to be occurring at 300 K, the value of activation energy is found to be ____________ kJ mol$$-$$1. [nearest integer]
0.25 g of an organic compound containing chlorine gave 0.40 g of silver chloride in Carius estimation. The percentage of chlorine present in the compound is ___________. [in nearest integer]
(Given : Molar mass of Ag is 108 g mol$$-$$1 and that of Cl is 35.5 g mol$$-$$1)
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