ECAT Pre Engineering Chemistry Chapter 19 MCQ Test With Answer

MCQ's Test For ECAT Chemistry Chapter 19 Aliphatic Hydrocarbons

Try The MCQ's Test For ECAT Chemistry Chapter 19 Aliphatic Hydrocarbons

  • Total Questions30

  • Time Allowed30

Start Test Download PDF

ECAT Chemistry Chapter 19 Aliphatic Hydrocarbons

00:00
Question # 1

Marsh gas was the name given to

Question # 2

When n-hexane is heated in the presence of Pt at 500°C, it cyclists to give

Question # 3

Which class of compound is more reactive

Question # 4

The presence of a double bond in a compound is the sign of

Question # 5

All C - H bond lengths of benzene ring is

Question # 6

The benzene molecule contains

Question # 7

Which gas is used for welding purposes

Question # 8

Toluene is also called

Question # 9

The stability of acromatic compounds decreases with ------- in the no. of its resonance structure

Question # 10

Alkenes combine readily with electrophillic reagents such as halogens giving

Question # 11

The electron releasing effect of methyl group is significant and it makes ring a good

Question # 12

Vinyl acetylene combines with HCI to form

Question # 13

When alkyl is treated with chlorine in the presence of sunlight

Question # 14

β-β- dichloroethyle sulphide is commonly known as:

Question # 15

the unreactivity of alkanes is based upon

Question # 16

Which is liquid among the following alkenes?

Question # 17

Octane number can be changed by

Question # 18

Sulphuric acid generates nitronium ion by reacting with

Question # 19

How many isomeric disubtituted products are obtained by the introducing of second group in the ring

Question # 20

Mustard gas is a :

Question # 21

When benzene is burnt in free supply of air, it is completely oxidized to

Question # 22

Which can be used for dehydration of alcohol

Question # 23

Which of the following substances is used as an antiknock compound?

Question # 24

How many molecules of chlorine adds in benzene in the presence of sunlight

Question # 25

Hybridization of each carbon atom in benzene ring is

Question # 26

Kolb's method has limited synthetic applications due to

Question # 27

Synthesis of rubber is made by polymerization of

Question # 28

The difference between amount of heat actually released and that of calculated is called

Question # 29

The temp. used for the hydrogenation of alkenes using Ni is

Question # 30

Which of the following decolorized Br2-water

Submit

Prepare Complete Set Wise ECAT Chemistry Chapter 19 Aliphatic Hydrocarbons MCQs Online With Answers


Top Scorers Of ECAT Chemistry Chapter 19 Aliphatic Hydrocarbons MCQ`s Test

  • M
    M Umer Arain 29 - Nov - 2024 00 Min 03 Sec 110/120
  • G
    GOVT. SUFFA EDUCATION CENTER GIRLS MURIDKE 01 - Jun - 2024 04 Min 52 Sec 110/120
  • H
    Huzaifa Asim 29 - May - 2024 02 Min 21 Sec 100/120
  • A
    Ali Tariq 23 - May - 2024 08 Min 03 Sec 100/120
  • G
    Ghulam Destgeer Destgeer 23 - May - 2024 08 Min 48 Sec 95/120
  • U
    Usman Saif 29 - May - 2024 04 Min 30 Sec 90/120
  • M
    Mian House 31 - May - 2024 05 Min 31 Sec 90/120
  • K
    khangul murad 09 - Jul - 2024 05 Min 58 Sec 90/120
  • A
    Abdullah Zubair 25 - Dec - 2024 06 Min 24 Sec 90/120
  • H
    Haider Ali 26 - May - 2024 10 Min 39 Sec 90/120
  • K
    Kaif Kaif ali 19 - May - 2024 11 Min 23 Sec 90/120
  • K
    kainat kashif 16 - May - 2024 13 Min 52 Sec 90/120
  • T
    Tasmia 18 - May - 2024 19 Min 18 Sec 90/120
  • M
    Muhammad Ali 25 - Jun - 2024 03 Min 24 Sec 85/120
  • Z
    Zoya Zoya 27 - May - 2024 11 Min 30 Sec 85/120
Sr.# Question Answer
1 Which of the following is not an electrophitic substitution reaction of benzene
A. Nitration
B. Sulphonation
C. Fridel-Craft alkylation
D. Free radical chlorination of benzene
2 Which of the following decolorized Br2-water
A. Methane
B. Ethane
C. Ethene
D. Propane
3 Which gas is used for welding purposes
A. Butane
B. Nitrogen
C. Methane
D. Acetylene
4 Which one of the following gases is used for artificial ripening of fruits
A. Ethene
B. Ethane
C. Methane
D. Propane
5 In CH4, all the H-C-H bond angles are
A. 120°
B. 107°
C. 109°
D. 109.5°
6 The treatment of benzene with isobutene in the presence of sulphuric acid give
A. isobutyl benzene
B. tert-Butyl benzene
C. n- Butyl benzene
D. no reaction
7 During the preparation of alkanes the hydrogenation of alkenes or alkynes the catalyst may be
A. H2SO4
B. Ni
C. Fe2O3
D. Al2O3
8 Alkanes are generally not reactive towards acids, alkalis, oxidation or reuducing agents. They however undergo some reactions, which one is the reaction undergone by alkanes
A. Elemination
B. Addition
C. Free radical substitution
D. Nucleophilic substation
9 Alkene general formula :
A. CnH2n+2
B. CnH2n
C. CnH2n-2
D. CnH2n+1
10 Aromatic hydrocarbons are the derivatives of
A. Normal series of paraffins
B. Alkene
C. Benzene
D. Cyclohexane
11 An alkynes having Carbon count of 20 is
A. gas
B. liquid
C. Solid
D. None
12 Amongst the following the compound that can be most readily sulphonated is
A. Toluene
B. Benzene
C. Nitrobenzene
D. Chlorobenzene
13 All are ortho & Para directing except
A. X
B. OH
C. NR3
D. NH2
14 A fuel has the same knocking property as a mixture of 70 isooctane (2, 2, 4- trimethyl pentane) and 30% n-heptane by volume the octane number of the fuel is
A. 100
B. 70
C. 50
D. 40
15 Polymerization of ethane take place at pressure of 100 atm and a temperature of
A. 200°C
B. 400°C
C. 600°C
D. 800°C
16 Which one does not declourized KMnO4
A. Alkenes
B. Alkynes
C. Bezene
D. All above
17 The nitration of benzene takes place when it is heated with a mixture of conc.HNO3and conc. H2SO4at 50°C in ratio of
A. 1 : 2
B. 1 : 1
C. 1 : 3
D. 2 : 1
18 A salt producing hydrocarbon among these compounds is
A. Ehyne
B. Ethene
C. Methane
D. Ethane
19 Complete combustion of alkane yields
A. CO2+ H2O
B. CO2+ heat
C. CO + H2O heat
D. CO2+ H2O + heat
20 The geometry of acetylene is
A. Angular
B. Bent
C. Trigonal
D. Linear
21 The general formula of alkane is
A. CnH2n+2
B. CnHn
C. CnH2n
D. C2H2n-1
22 An organic compound, on treatment with Br2 in CC14 gives bromoderivative of an alkene. The compound will be
A. CH3 - CH = Ch2
B. CH3CH = CHCH3
C. HC = CH
D. H2C = CH2
23 A six membered ring containing one double bond called
A. Cyclohexene
B. Cyclohexane
C. Cyclohexadiene
D. None
24 The addition of HBr is easiest with
A. CH2 = CHCl
B. CICH = CHCl
C. CH3 - CH = CH2
D. (CH3)2 C = CH2
25 Which reaction sequence would be best to prepare 3-chloro-aniline from benzene?
A. Chlorination, nitration, reducing
B. Nitration, chlorination, reducition
C. Nitration, reduction,chlorination
D. Nitration, reduction, acylation, chlorination, hydrolysis
26 The term aromatic was derives from
A. Greek word
B. Latin
C. Russian
D. English
27 Nitroalkane are used in
A. Fuel
B. Solvents
C. Organic synthesis
D. All of them
28 The alkynides are used for the ----------- of alkynes
A. Pxperation
B. Purification
C. Seperation
D. All of above
29 The reaction-method that does not give an alkane is
A. Catalytic hydrogenation of alkanes
B. Wurtz reaction
C. Hydrolysis of alkyl magnesium bromide
D. Dehydrohalogenation of an alkyl halide
30 CnH2nis the general formula of
A. Alkanes
B. Alkanes
C. alkynes
D. None of above

Test Questions

Is this page helpful?