1
WB JEE 2017
MCQ (Single Correct Answer)
+1
-0.25
Change Language
You are supplied with 500 mL each of 2N HCl and 5N HCl. What is the maximum volume of 3M HCl that you can prepare using only these two solutions?
A
250 mL
B
500 mL
C
750 mL
D
1000 mL
2
WB JEE 2017
MCQ (Single Correct Answer)
+1
-0.25
Change Language
Which one of the following corresponds to a photon of highest energy?
A
$$\lambda$$ = 300 mm
B
v = 3 $$\times$$ 108 s$$-$$1
C
$$\overline v $$ = 30 cm$$-$$1
D
$$\varepsilon $$ = 6.626 $$\times$$ 10$$-$$27 J
3
WB JEE 2017
MCQ (Single Correct Answer)
+1
-0.25
Change Language
Assuming the compounds to be completely dissociated in aqueous solution, identify the pair of the solutions that can be expected to be isotonic at the same temperature.
A
0.01 M urea and 0.01 M NaCl
B
0.02 M NaCl and 0.01 M Na2SO4
C
0.03 M NaCl and 0.02 M MgCl2
D
0.01 M sucrose and 0.02 M glucose
4
WB JEE 2017
MCQ (Single Correct Answer)
+1
-0.25
Change Language
How many faradays are required to reduce 1 mol of $$C{r_2}O_7^{2 - }$$ to Cr3+ in acid medium?
A
2
B
3
C
5
D
6
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