Which of the following halids cannot be hydrolysed ? (i)TeF6 (ii) SF6 (iii) NCl3 (iv) NF3 Choose the correct code 1) iii and iv 2) i , ii, and iii 3)i , ii and iv 4) ii ,iv

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Q. Which of the following halides cannot be hydrolyzed?

(I)

T e F_{6}

, (II)

S F_{6}

, (III)

N C l_{3}

, and (IV)

N F_{3}

Choose the correct option.
$\begin{matrix} 1. & Overtone & i . frequencies that are integral multiple of fundamental frequency 2. & Note & ii . Sound of single frequency 3. & Tone & iii . Sound of multiple frequencies 4. & Harmonics & iv . Higher frequencies other than fundamental frequency \end{matrix}$

Choose the correct option:

$\begin{matrix} 1. & Tone & i . & frequencies that are integral multiple of fundamental frequency. 2. & Note & ii . & sound of single frequency. 3. & Overtone & iii . & sound of multiple frequencies. 4. & Harmonic & iv & higher frequencies other than fundamental frequency. \end{matrix}$

Choose the correct option according to the angle between force and direction of displacement.

$\begin{matrix} Column1 & Column2 1. θ is zero & i) Work done is always zero 2. θ is less than 90^{0} & i i) Work done is non-negative 3. θ is greater than 90^{0} & i i i) Work done is always positive 4. θ is 90^{0} & i v) Work done is never positive \end{matrix}$

Which of the following are parts involved in the sexual reproduction in plants?
(i) Flower
(ii) Seed
(iii) Fruit
(iv) Branch
Choose the correct answer from below
a (i) and (ii)
b (i), (ii) and (iii)
c (iii) and (iv)
d (ii),(iii) and (iv)

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