1
WB JEE 2018
MCQ (Single Correct Answer)
+1
-0.33
Change Language
Ferric ion forms a Prussian blue precipitate due to the formation of
A
$${K_4}[Fe{(CN)_6}]$$
B
$${K_3}[Fe{(CN)_6}]$$
C
$$Fe{(CNS)_3}$$
D
$$F{e_4}{[Fe{(CN)_6}]_3}$$
2
WB JEE 2018
MCQ (Single Correct Answer)
+1
-0.33
Change Language
The nucleus $$_{29}^{64}$$Cu accepts an orbital electron to yield,
A
$$_{28}^{65}$$Ni
B
$$_{30}^{64}$$Zn
C
$$_{28}^{64}$$Ni
D
$$_{30}^{65}$$Zn
3
WB JEE 2018
MCQ (Single Correct Answer)
+1
-0.33
Change Language
How many moles of electrons will weigh one kilogram?
A
6.023 $$\times$$ 1023
B
$${1 \over {9.108}} \times {10^{31}}$$
C
$${{6.023} \over {9.108}} \times {10^{54}}$$
D
$${1 \over {9.108 \times 6.023}} \times {10^8}$$
4
WB JEE 2018
MCQ (Single Correct Answer)
+1
-0.33
Change Language
Equal weights of ethane and hydrogen are mixed in an empty container at 25$$^\circ$$C. The fraction of total pressure exerted by hydrogen is
A
1 : 2
B
1 : 1
C
1 : 16
D
15 : 16
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