1
WB JEE 2024
MCQ (Single Correct Answer)
+1
-0.25
Change Language

Which hydrogen like species will have the same radius as that of $$1^{\text {st }}$$ Bohr orbit of hydrogen atom?

A
$$ \mathrm{n}=2, \mathrm{Li}^{2+} $$
B
$$ \mathrm{n}=2, \mathrm{Be}^{3+} $$
C
$$ \mathrm{n}=2, \mathrm{He}^{+} $$
D
$$ \mathrm{n}=3, \mathrm{Li}^{2+} $$
2
WB JEE 2024
MCQ (Single Correct Answer)
+1
-0.25
Change Language

For a first order reaction with rate constant $$\mathrm{k}$$, the slope of the plot of $$\log$$ (reactant concentration) against time is

A
k/2.303
B
k
C
$$-$$k/2.303
D
$$-$$k
3
WB JEE 2024
MCQ (Single Correct Answer)
+1
-0.25
Change Language

Equal volumes of aqueous solution of $$0.1(\mathrm{M}) \mathrm{HCl}$$ and $$0.2(\mathrm{M}) \mathrm{H}_2 \mathrm{SO}_4$$ are mixed. The concentration of $$\mathrm{H}^{+}$$ ions in the resulting solution is

A
0.15 (M)
B
0.30 (M)
C
0.10 (M)
D
0.25 (M)
4
WB JEE 2024
MCQ (Single Correct Answer)
+1
-0.25
Change Language

The correct order of boiling point of the given aqueous solutions is

A
$$1 \mathrm{~N} \mathrm{KNO}_3>1 \mathrm{~N} \mathrm{NaCl} >1 \mathrm{~N} \mathrm{CH}_3 \mathrm{COOH} \\ >1 \mathrm{~N} \text { sucrose }$$
B
$$1 \mathrm{~N} \mathrm{KNO}_3=1 \mathrm{~N} \mathrm{NaCl} >1 \mathrm{~N} \mathrm{CH}_3 \mathrm{COOH} \\ >1 \mathrm{~N} \text { sucrose }$$
C
Same for all
D
$$1 \mathrm{~N} \mathrm{KNO}_3=1 \mathrm{~N} \mathrm{NaCl} =1 \mathrm{~N} \mathrm{CH}_3 \mathrm{COOH} \\ >1 \mathrm{~N} \text { sucrose }$$
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