These structures represent which particular kind of halides :

The aqueous solution containing which one of the following ions will be colourless? (Atomic numbers: \(Sc = 21, Fe = 26, Ti = 22, Mn = 25\))

Read the passage carefully and answer the Questions
Alcohols and phenols are obtained when a hydrogen atom in aliphatic and aromatic hydrocarbons respectively, is replaced by \(OH\) group. These compounds find wide applications in industry as well as in our daily life. You may notice that ordinary spirit is used for polishing wooden furniture which is chiefly a compound containing hydroxyl group. An alcohol contains one or more hydroxyl \((OH)\) group(s) directly attached to carbon atom(s), of an aliphatic system \((CH_3OH)\) while a phenol contains \(OH\) group(s) directly attached to carbon atom(s) of an aromatic system \((C_6H_5OH)\). Alcohols are prepared by the hydration of alkenes, fermentation of glucose, and reduction of carbonyl compounds. Alcohols produce alkenes upon dehydration whereas alkenes on acid catalyzed hydration convert into alcohols.
An alkyl halide can be converted into alcohol through:

What is the coordination number of Fe in \(\left[ Fe ( CO )_5\right]\) and \(\left[ Fe \left( C _2 O _4\right)_3\right]^{3-}\) respectively?

75% of a first order reaction was completed in 16 minutes. When was it half completed?
(Given: log(0.75) = -0.125, log(0.25) = -0.602)

The conversions which are represented correctly are
(A)

(B)

(C)

(D)

Choose the correct answer from the options given below:

The correct order of increasing boiling points of hydrides (given below) of group 15 is:
(A) \(\text{NH}_3\)
(B) \(\text{PH}_3\)
(C) \(\text{AsH}_3\)
(D) \(\text{SbH}_3\)
(E) \(\text{BiH}_3\)
Choose the correct answer from the options given below :

For \(x \in[-1,1]\), if \(4 \sin ^{-1} x+\cos ^{-1} x=\pi\) then \(x\) is equal to :

The wavelength of photon emitted by a hydrogen atom when an electron makes a transition from n = 2 to n = 1 state is. (Take the value of the Rydberg constant, \(R = 1.0973 \times 10^7 \text{ m}^{-1}\))

The role of restriction enzyme in recombinant DNA technology is:

A solution of CuSO _4 is electrolysed for 10 minutes using a current of amperes. ( 1 mol of \(Cu =63 g\) ). How much copper is deposited at cathode
\(1 F=96487 C mol^{-1}\)

Consider the equation of the line \(\vec{r}=-\hat{i}+2 \hat{k}+\mu(4 \hat{i}-\hat{j}+2 \hat{k})\).
Match List-I with List-II

List-I	List-II
(A) It passes through the point	(I) \(4,-1,2\)
(B) Its direction ratios are	(II) \(\frac{4}{\sqrt{21}}, \frac{-1}{\sqrt{21}}, \frac{2}{\sqrt{21}}\)
(C) Its Cartesian form is	(III) \((-1,0,2)\)
(D) Its direction cosines are	(IV) \(\frac{x+1}{4}=\frac{y}{-1}=\frac{z-2}{2}\)

Choose the correct answer from the options given below :

Match List-l with List-ll

List-I(Reaction)	List-II(Preparation)
(A) Kolbe's Reaction	(I) Salicylaldehyde
(B) Reimer-Tiemann Reaction	(II) Salicylic acid
(C) Williamson synthesis	(III) Ethyl methyl ether
(D) Cumene Process	(IV) Phenol

Choose the correct answer from the options given below: