1
NEET 2023
MCQ (Single Correct Answer)
+4
-1
Change Language

Consider the following compounds/species:

NEET 2023 Chemistry - Some Basic Concepts of Organic Chemistry Question 6 English

The number of compounds/species which obey Huckel's rule is ___________.

A
6
B
2
C
5
D
4
2
NEET 2023
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language

What fraction of one edge centred octahedral void lies in one unit cell of fcc?

A
$$\frac{1}{3}$$
B
$$\frac{1}{4}$$
C
$$\frac{1}{12}$$
D
$$\frac{1}{2}$$
3
NEET 2023
MCQ (Single Correct Answer)
+4
-1
Change Language

Which complex compound is most stable?

A
$$\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{3}\left(\mathrm{NO}_{3}\right)_{3}\right]$$
B
$$\left[\mathrm{CoCl}_{2}(\mathrm{en})_{2}\right] \mathrm{NO}_{3}$$
C
$$\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{6}\right]_{2}\left(\mathrm{SO}_{4}\right)_{3}$$
D
$$\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{4}\left(\mathrm{H}_{2} \mathrm{O}\right) \mathrm{Br}\right]\left(\mathrm{NO}_{3}\right)_{2}$$
4
NEET 2023
MCQ (Single Correct Answer)
+4
-1
Change Language

On balancing the given redox reaction,

$$\mathrm{aCr}_{2} \mathrm{O}_{7}^{2-}+\mathrm{bSO}_{3}^{2-}(\mathrm{aq})+\mathrm{cH}^{+}(\mathrm{aq}) \rightarrow 2 \mathrm{aCr}^{3+}(\mathrm{aq})+\mathrm{bSO}_{4}^{2-}(\mathrm{aq})+\frac{\mathrm{c}}{2} \mathrm{H}_{2} \mathrm{O}(\ell)$$

the coefficients $$\mathrm{a}, \mathrm{b}$$ and $$\mathrm{c}$$ are found to be, respectively -

A
3, 8, 1
B
1, 8, 3
C
8, 1, 3
D
1, 3, 8
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