Classification

Q.

What is geminal dihalide?

Q. What will happen if two different alkyl halides are taken

Q. Which of the following is a primary halide

1. Isopropyl iodide
2. Secondary butyl iodide
3. Tertiary butyl bromide
4. Neo hexyl chloride

Q.

The number of structural isomers of C₄H₉Cl that are primary haloalkane are:

1. 4

2. 3

3. 2

4. 1

Q.

Predict the order of reactivity of the following compounds in SN1 and SN2 reactions

C6H5CH2Br , C6H5CH(C6H5)Br , C6H5CH(CH3)Br , C6H5C(CH3)(C6H5)

Q. Consider the reaction sequence given below :

Which of the following statement is true

1. Changing the concentration of the base will have no effect on reaction (1)
2. Changing the base from $O{H}^{-}$ to ${}^{-}OR$ will have no effect on reaction (2)
3. Doubling the concentration of base will double the rate of both the reaction .
4. Changing the concentration of the base will have no effect on reaction (2)

Q. In the reaction $ROH+PC{l}_3\to RCl+H_{3}P{O}_3$ the number of mole of alcohol that may be converted into alkylchloride by one mole of $PC{l}_3$ is

1. 1
2. 2
3. 3
4. $\frac{1}{3}$

Q. The increasing order of reactivity of the following compounds towards reaction with alkyl halides directly is :
(A)(B)(C)
(D)

1. $\text{(B)<(A)<(D)<(C)}$
2. $\text{(B)<(A)<(C)<(D)}$
3. $\text{(A)<(C)<(D)<(B)}$
4. $\text{(A)<(B)<(C)<(D)}$

Q. 3. Which is not. Primary halide? (a)Isobutyl chloride (b) isopentyl chloride (c) n-butyl chloride (d) neopentyl chloride

Q. Chemical name of the insecticide gammexene is

1. DDT
2. Benzene hexachloride
3. Chloral
4. Hexachloroethane

Q.

Which of the following is an example of vic-dihalide?

(a) Dichloromethane (b) 1, 2-dichloroethane

(c) Ethylidene chloride (d) Allyl chloride

Q.

Ethylidene chloride is a /an ........

(a) vic-dihalide (b) gem-dihalide (c) allylic halide (d) vinylic halide

Q. How many optically active isomers of dimethylcyclopentane are possible?

Q. How many among the following compound will give both the above result ?


i. Cyclohexanone ii. Acetone
iii. Propionaldehyde iv. Acetophenone
v. Acetaldehyde vi. Benzophenone
vii. Benzaldehyde

1. $2$
2. $5$
3. $4$
4. $3$

Q. Among the following, the optically active compound is

1. 
2. 
3. 
4. 

Q. methyl isocyanate on alkaline hydrolysis gives 1.methyl cyanide 2.ethyl amine 3.methyl amine 4.methyl carbamic acid

Q. Compounds that on hydrogenation produce optically inactive compounds are

1. 
2. 
3. 
4. 

Q. how C6H5COOH acidity less than that of C6H5-CH2-COOH?

Q. A gaseous hydrocarbon X was burnt in excess of O2. A 0.112 dm3 sample of X at STP gave 0.88g of CO2.Then no of C atoms in one molecule of X are

Q.

The position of Br in the compound in $C{H}_{3}CH=CHC\left(Br\right)(C{H}_3{)}_2$ can be classified as ........

(a) allyl (b) aryl (c) vinyl (d) secondary

Q. Which one of the following compounds is an allylic halide?

1. 
2. 
3. 
4. 

Q. 32. Which of the following solution is hypertonic at constant identical temperature? 1M aqueous glucose 1M benzoic acid in benzene 1M aqueous ammonium phosphate 1M aqueous calcium chloride

Q.

Which one of the following statement is wrong?

1. Chloroform can be used as insecticide

2. Chloroform can be used as anesthetic

3. DDT can be used as insecticide

4. Iodoform is used as antiseptic.

Q. Draw the structure of major monohalo products in each of the following reactions:

Q.

An element A is tetravalent and another element B is divalent. The compound formed by these two elements will be:

1. ${\mathrm{AB}}_4$

2. ${\mathrm{A}}_2\mathrm{B}$

3. ${\mathrm{AB}}_2$

4. $\mathrm{AB}$

Q.

How many gram of bromine will react with $21\mathrm{gm}$ of Propene (${\mathrm{C}}_3{\mathrm{H}}_6$)?

1. 80

2. 160

3. 240

4. 320

Q. Arrange the following compounds in decreasing order of their reactivity with sodium methoxide in methanol at ${50}^{\circ }$ C.

1. $II>III>IV>I$
2. $II\approx IV>III>I$
3. $II\approx III>I>IV$
4. $II\approx IV\approx III>I$

Q. The product of the reaction of alcoholic silver nitrate with ethyl bromide is

1. Ethene
2. Nitroethane
3. Ethane nitrite
4. Ethyl alcohol

Q. In Fittig reaction, aryl halides when treated with ___ in dry ether give an analogous compound in which two aryl groups are joined together.

1. Potassium
2. Magnesium
3. Sodium
4. Calcium

Q. Which of the following is Vinyl halide?

1. $C{H}_2=CH-Cl$
2. $\underset{Cl}{\underset{|}{C}}{H}_2-\underset{Cl}{\underset{|}{C}}{H}_2$
3. $CH\equiv C-Cl$
4. $C{H}_{2}C{l}_2$