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Ethyl bromide reacts with lead-sodium alloy to form:
(1) Tetraethyl lead
(2) Tetraethyl bromide
(3) Both (1) and (2) 
(4) none of these

Grignard reagent shows addition on:
$\left(1\right) > C=O$
$\left(2\right) - C\equiv N$
$\left(3\right) >C=S$
$\left(4\right) All of these$

Which set of reagents will produce freon (${\mathrm{CCI}}_2{\mathrm{F}}_2$)?
(1) $\mathrm{C}+{\mathrm{F}}_2+{\mathrm{Cl}}_2\to$
(2) ${\mathrm{CH}}_3\mathrm{Cl}+{\mathrm{F}}_2\to$
(3) ${\mathrm{CCl}}_4+\mathrm{HF}\stackrel{{\mathrm{SbCl}}_5}{\to }$
(4) ${\mathrm{CCl}}_4+{\mathrm{F}}_{2\to }$

Chloroform is kept in dark coloured bottles because:
1. It is inflammable.
2. It gives a peroxide.
3. It undergoes rapid chlorination.
4. It is oxidised to poisonous phosgene gas.

Which statement is correct?
(1) ${\mathrm{C}}_2{\mathrm{H}}_5\mathrm{Br}$reacts with alcoholic $\mathrm{KOH}$ to form ${\mathrm{C}}_2{\mathrm{H}}_5\mathrm{OH}$
(2) ${\mathrm{C}}_2{\mathrm{H}}_5\mathrm{Br}$ when treated with metallic sodium gives ethane
(3) ${\mathrm{C}}_2{\mathrm{H}}_5\mathrm{Br}$ when treated with sodium ethoxide forms diethyl ether 
(4) ${\mathrm{C}}_2{\mathrm{H}}_5\mathrm{Br}$ with $\mathrm{AgCN}$ forms ethyl cyanide

Chloral is:
(1) ${\mathrm{CCl}}_3\mathrm{CHO}$
(2) ${\mathrm{CCl}}_3·\mathrm{CO}·{\mathrm{CH}}_3$
(3) ${\mathrm{CCl}}_3·\mathrm{CO}·{\mathrm{CCI}}_3$
(4) ${\mathrm{CCl}}_3·{\mathrm{CH}}_2\mathrm{OH}$

Identify (Z) in the following reaction series,
${\mathrm{C}}_2{\mathrm{H}}_5\mathrm{I}\underset{\mathrm{KOH}}{\overset{\mathrm{Alcoholic}}{\to }}\left(\mathrm{X}\right)\stackrel{{\mathrm{Br}}_2}{\to }\left(\mathrm{Y}\right)\stackrel{\mathrm{KCN}}{\to }\left(\mathrm{Z}\right)$:
 
(1) ${\mathrm{CH}}_3-{\mathrm{CH}}_2-\mathrm{CH}$​
(2) $\underset{\underset{\mathrm{CN}}{\mathrm{l}}}{{\mathrm{CH}}_2}-\underset{\underset{\mathrm{CN}}{\mathrm{l}}}{{\mathrm{CH}}_2}$
(3) $$$\underset{\underset{\mathrm{Br}}{\mathrm{l}}}{{\mathrm{CH}}_2}-\underset{\underset{\mathrm{CN}}{\mathrm{l}}}{{\mathrm{CH}}_2}$
(4)$\underset{\underset{\mathrm{Br}}{\mathrm{l}}}{\mathrm{CH}}=\underset{\underset{\mathrm{CN}}{\mathrm{l}}}{\mathrm{CH}}$

Identify the product (A) in following reaction series 
$C{H}_{3}CN\stackrel{Na /C_2{H}_{5}OH}{\to }$$\left(X\right)\stackrel{HN{O}_2}{\to }$$\left(Y\right)\stackrel{\left[O\right]}{\to }$$\left(Z\right)\stackrel{Tollens reggent }{\to }$(A) :
(1) CH₃CHO
(2) CH₃CONH₂
(3) CH₃COOH
(4)CH₃$—C{H}_2—NHON$

Identify ′Z′ in the following reaction series, 
${\mathrm{CH}}_3.{\mathrm{CH}}_2{\mathrm{CH}}_2\mathrm{Br}\stackrel{\mathrm{aqueous} \mathrm{NaOH}}{\to }\left(\mathrm{X}\right)\underset{\mathrm{Heat}}{\overset{{\mathrm{Al}}_2{\mathrm{O}}_3}{\to }}\left(\mathrm{Y}\right)\stackrel{\mathrm{HOCl}}{\to }\left(\mathrm{Z}\right)$:​
(1) Mixture of ${\mathrm{CH}}_3-\underset{\underset{\mathrm{Cl}}{\mathrm{l}}}{\mathrm{CH}}-\underset{\underset{\mathrm{Cl}}{\mathrm{l}}}{{\mathrm{CH}}_2}$ and ${\mathrm{CH}}_3-\underset{\underset{\mathrm{OH}}{\mathrm{l}}}{\mathrm{CH}}-\underset{\underset{\mathrm{Cl}}{\mathrm{l}}}{{\mathrm{CH}}_2}$
(2) $$${\mathrm{CH}}_3-\underset{\underset{\mathrm{OH}}{\mathrm{l}}}{\mathrm{CH}}-\underset{\underset{\mathrm{Cl}}{\mathrm{l}}}{{\mathrm{CH}}_2}$
(3) ${\mathrm{CH}}_3-\underset{\underset{\mathrm{Cl}}{\mathrm{l}}}{\mathrm{CH}}-\underset{\underset{\mathrm{OH}}{\mathrm{l}}}{{\mathrm{CH}}_2}$
(4) $$${\mathrm{CH}}_3-\underset{\underset{\mathrm{Cl}}{\mathrm{l}}}{\mathrm{CH}}-\underset{\underset{\mathrm{Cl}}{\mathrm{l}}}{{\mathrm{CH}}_2}$

Ethylene dichloride on treatment with aqueous KOH gives:
(1) CH3CHO
(2) $C{H}_{2}OH$
$\left|\right|$
$C{H}_{2}OH$
(3) HCHO
(4)   $CHO$
$\left|\right|$
$CHO$
 

Vicinal and geminal dihalides can be distinguished by:
(1) KOH (aq)
(2) KOH (alc.)
(3) Zn dust
(4) none of those 
 

A compound A gives  B(C₃H₆O) on reaction with KOH aq  and C (C₃H₄) with alcoholic KOH.B on oxidation gave a compound of the formula C₃H₆O₂. C with dilute H₂SO₄ containing Hg²⁺ ion gave D of formula C₃H₆O, which with bromine and NaOH gave the sodium salt of C₂H₄O₂. Then A is 
(1) CH₃CH₂CHCl₂
(2) CH₃CCl₂CH₃
(3) CH₂ClCH₂CH₂Cl
(4) CH₃CHClCH₂
 

Which is the major product of the following reaction?

(1)
(2)
(3)
(4)
 

1-2-dichloro ethane + $NaSC{H}_{2}C{H}_{2}SNa\to C_4{H}_8{S}_2+\left(P\right)$
Unknown product (P) of the above reaction is:
1. 
2. 
3. 
4. 

 Product of reaction is :
(1)
(2)
(3)
(4) 

Consider the following alcohols :

The order of decreasing reactivities of these alcohols towards substitution with HBr is:
(1) III > I > IV > II
(2) III > I > II > IV
(3) I > III > IV > II
(4) I > III > II > IV