which one of the following is true regarding the cartilages of the larynx

1. 3 paired and 3 unpaired

2. 4 paired and 2 unpaired

3. 6 paired and 1 unpaired

4. 2 unpaired and 2 paired

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Solution

The larynx is the most superior part of the respiratory tract and the voice box of the human body.

It surrounds and protects the vocal chords, as well as the entrance to the trachea, preventing food particles or fluids from entering the lungs. The cartilages of the larynx make up its skeleton. Of the nine cartilages all together, three of them are paired and bilaterally symmetrical, while three remain unpaired and specifically placed for accurate function.

so answer is 3 paired and 3 unpaired

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Q. The number of paired and unpaired electrons in the valence shell of sulphur is:

Q. The number of paired and unpaired electrons in the Lewis symbol for

S

atom is:

Q. Match the column I with column II and mark the appropriate choice.

	Column I (Atom)		Column II (No. of unpaired electrons)
(A)	$_{15} P$	(i)	6 unpaired electrons
(B)	$_{24} C r$	(ii)	2 unpaired electrons
(C)	$_{26} F e$	(iii)	3 unpaired electrons
(D)	$_{14} S i$	(iv)	4 unpaired electrons

Match the complex ions given in Column I with the hybridisation and number of unpaired electrons given in Column II and assign the correct code.

$\begin{matrix} Column~I & Column~II (C o m p l e x i o n) & (H y b r i d i s a t i o n, n u m b e r o f u n p a i r e d e l e c t r o n s) A . [C r (H_{2} O)_{6}]^{3 +} & 1. d s p^{2}, 1 B . [C o (C N)_{4}]^{2 -} & 2. s p^{3} d^{2}, 5 C . [N i (N H_{3})_{6}]^{2 +} & 1. d^{2} s p^{3}, 3 D . [M n F_{6}]^{4 -} & 2. s p^{3} d^{2}, 2 \end{matrix}$

Codes

$\begin{matrix} A & B & C & D (a) & 3 & 1 & 4 & 2 (b) & 4 & 3 & 2 & 1 (c) & 3 & 2 & 4 & 1 (d) & 4 & 1 & 2 & 3 \end{matrix}$

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which one of the following is true regarding the cartilages of the larynx 1. 3 paired and 3 unpaired 2. 4 paired and 2 unpaired 3. 6 paired and 1 unpaired 4. 2 unpaired and 2 paired

which one of the following is true regarding the cartilages of the larynx

1. 3 paired and 3 unpaired

2. 4 paired and 2 unpaired

3. 6 paired and 1 unpaired

4. 2 unpaired and 2 paired