1
VITEEE 2023
MCQ (Single Correct Answer)
+1
-0

Atomic number of $$\mathrm{Mn}, \mathrm{Fe}$$ and $$\mathrm{Co}$$ are 25, 26 and 27 respectively. Which of the following inner orbital octahedral complex ions are diamagnetic?

I. $$\left[\mathrm{CO}\left(\mathrm{NH}_3\right)_6\right]^{3+}$$

II. $$\left[\mathrm{Mn}(\mathrm{CN})_6\right]^{3-}$$

III. $$\left[\mathrm{Fe}(\mathrm{CN})_6\right]^{4-}$$

IV. $$\left[\mathrm{Fe}(\mathrm{CN})_6\right]^{3-}$$

Choose the correct option.

A
II and III
B
I and IV
C
I and III
D
II and IV
2
VITEEE 2023
MCQ (Single Correct Answer)
+1
-0

Arrhenius equation may not be represented as

A
$$\ln \frac{A}{k}=\frac{E_a}{R T}$$
B
$$k=A e^{-E a / R T}$$
C
$$\log A=\log k+\frac{E_a}{2.303 R T}$$
D
$$\log k-\left(\frac{E_{\mathrm{a}}}{R T}\right)=A$$
3
VITEEE 2023
MCQ (Single Correct Answer)
+1
-0

Match the Column I with Column II.

Column I
(Aqueous solutions)
Column II
(Elevation in boiling point)
A. $$\mathrm{0.0001~M~NaCl}$$ I. 0.02
B. $$\mathrm{0.0001~M~Urea}$$ II. 0.003
C. $$\mathrm{0.001~M~MgCl_2}$$ III. 0.0001
D. $$\mathrm{0.01~M~NaCl}$$ IV. 0.0002

Mark the correct option

A
A - IV, B - III, C - II, D - I
B
A - I, B - II, C - III, D - IV
C
A - IV, B - II, C - I, D - III
D
A - II, B - IV, C - III, D - I
4
VITEEE 2023
MCQ (Single Correct Answer)
+1
-0

Choose the wrong statements.

I. $$\mathrm{CO}_2$$ is responsible for greenhouse effect.

II. Acid rain contains mainly $$\mathrm{HNO}_3$$.

III. NO is more harmful than $$\mathrm{NO}_2$$.

IV. $$\mathrm{CO}_2$$ can absorb infrared.

Mark the correct option

A
II and III
B
I and III
C
I and IV
D
All of these
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