The major product formed in the following reaction of
Answer
(B)
2
Among the following, the conformation that corresponds to the most stable conformation of meso-butane-2,3-diol is
Answer
(B)
3
For the given close packed structure of a salt made of cation X and anion Y shown below (ions of only one face are shown for clarity), the packing fraction is approximately (packing fraction = $${{packing\,efficiency} \over {100}}$$)
Answer
(B)
0.63
4
The calculated spin only magnetic moments of [
Cr(NH3)6]3+ and [CuF6]3$$-$$ in BM, respectively, are
(Atomic numbers of Cr and Cu are 24 and 29, respectively)
Answer
(A)
3.87 and 2.84
5
For the following reaction scheme, percentage yields are given along the arrow:
x g and y g are mass of R and U, respectively.
(Use : Molar mass (in g mol$$-$$1) of H, C and O as 1, 12 and 16, respectively)
The value of x is ________.
Answer
1.62
6
The value of y is ________.
Answer
3.20
7
The value of standard enthalpy, $$\Delta$$Ho (in kJ mol$$-$$1) for the given reaction is _______.
Answer
166.28
8
The value of $$\Delta$$S$$\theta$$ (in J K$$-$$1 mol$$-$$1) for the given reaction, at 1000 K is _________.
Answer
141.34
9
The value of x is ________.
Answer
100.1
10
The value of | y | is ________.
Answer
2.5
11
Given :
The compound(s), which on reaction with HNO3 will give the product having degree of rotation, [$$\alpha$$]D = $$-$$52.7$$^\circ$$ is (are)
Answer
C
D
12
The reaction of Q with PhSNa yields an organic compound (major product) that gives positive Carius test on treatment with Na2O2 followed by addition of BaCl2. The correct option(s) for Q is (are)
Answer
A
D
13
The correct statement(s) related to colloids is (are)
Answer
B
C
14
An ideal gas undergoes a reversible isothermal expansion from state I to state II followed by a reversible adiabatic expansion from state II to state III. The correct plot(s) representing the changes from state I to state III is (are)
(p : pressure, V : volume, T : temperature, H : enthalpy, S : entropy)
Answer
A
B
D
15
The correct statement(s) related to the metal extraction processes is (are) :
Answer
A
C
D
16
A mixture of two salts is used to prepare a solution S, which gives the following results :
The correct option(s) for the salt mixture is (are)
Answer
A
B
17
The maximum number of possible isomers (including stereoisomers) which may be formed on mono-bromination of 1-methylcyclohex-1-ene using Br2 and UV light is ___________.
Answer
13
18
In the reaction given below, the total number of atoms having sp2 hybridization in the major product P is _________.
Answer
12
19
The total number of possible isomers for [Pt(NH3)4Cl2]Br2 is ______.
