1
WB JEE 2017
MCQ (Single Correct Answer)
+1
-0.25
Change Language
If the given four electronic configurations.

(i) n = 4, l = 1

(ii) n = 4, l = 0

(iii) n = 3, l = 2

(iv) n = 3, l = 1

are arranged in order of increasing energy, then the order will be
A
(iv) < (ii) < (iii) < (i)
B
(ii) < (iv) < (i) < (iii)
C
(i) < (iii) < (ii) < (iv)
D
(iii) < (i) < (iv) < (ii)
2
WB JEE 2017
MCQ (Single Correct Answer)
+1
-0.25
Change Language
Which of the following sets of quantum numbers represents the 19th electron of Cr(Z = 24) ?
A
$$\left( {4,1, - 1, + {1 \over 2}} \right)$$
B
$$\left( {4,0,0, + {1 \over 2}} \right)$$
C
$$\left( {3,2,0, - {1 \over 2}} \right)$$
D
$$\left( {3,2, - 2, + {1 \over 2}} \right)$$
3
WB JEE 2017
MCQ (Single Correct Answer)
+1
-0.25
Change Language
0.126 g of an acid is needed to completely neutralise 20 mL 0.1 (N) NaOH solution. The equivalent weight of the acid is
A
53
B
40
C
45
D
63
4
WB JEE 2017
MCQ (Single Correct Answer)
+1
-0.25
Change Language
In a flask, the weight ratio of CH4(g) and SO2(g) at 298 K and 1 bar is 1 : 2. The ratio of the number of molecules of SO2(g) and CH4(g) is
A
1 : 4
B
4 : 1
C
1 : 2
D
2 : 1
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