CBSE Questions for Class 11 Medical Chemistry Organic Chemistry Some Basic Principles And Techniques Quiz 9 - MCQExams.com

In the structure, the number of functional groups present is :
1306439_ddcd685d35a04ffbb4b4e4a33e134af1.png
  • 2
  • 4
  • 5
  • 3
How is -X group replaced by following functional groups.
  • -OH
  • -CN
  • -NC
  • $$-NH_2$$
$$M{e_2}CCl\,C{H_2}CH = CH - CH = CH - COOH$$ 
$$I.U.P.A.C$$ name of this is :-
  • $$7-Chloro-7-methyloctan-2,4-dienoic$$ $$acid.$$
  • $$7-Chloro-7,7-dimethyl-2,-3-heptadienoic$$ $$acid.$$
  • $$2-Chloro-2-methyl-4,5-octadiene-7-oic$$ $$acid.$$
  • $$7-Chloro-7-methyl oct-2,-3-heptadienoic$$ $$acid.$$
In the given compound the correct lowest set of locants are :
1307729_f56389371beb461bb0ff5ef8b6e2a0bb.JPG
  • 3,3,4,5
  • 3,4,5,5
  • 4,5,3,3
  • None of these
Give the IUPAC name of the alkene
1311194_50db60d85a7848f19659d8a89bcdf251.png
  • $$Z-3 methyl-4-propyl-3-octene$$
  • $$E-3 methyl-4-propyl-3-octene$$
  • $$E-4 butyl-3-methyl-3- heptene$$
  • $$E-2 ethyl-3-propyl-3- heptene$$
  • $$Z-2-ethyl-2-propyl-2-heptene$$

The IUPAC name of given compound is:
1333700_8a917b1e0dae49bfb4d5f050256f54bd.png
  • 4-Ethylcyclobut-2-en-l-ol
  • 4-ethylcyclobut-2-en-3-ol
  • 3-ethylcyclobut-1-en-2-ol
  • 2-ethylcyclobut-3-en-l-ol
Correct IUPAC name is 
1333685_e4712c8840d240fcbf6babb5ee1f0dd6.png
  • 3-ethylhex-2-ene
  • 3-ethypent-2-ene
  • 3-ethylpent-3-ene
  • 3-propylpent-2-ene
The correct IUPAC name  
1333625_c2693b5a155c478d9be888bc88fa9012.jpg
  • 2-ethoxy-5-chloropentane
  • 1-chloro-4-ethoxy-4-methylbutane
  • 1-chloro-4-ethoxypentane
  • ethyl-1-chloropentyl ether
IUPAC name for the compound is:
1333738_67fc98d809fb426b905a33dcb5ff3d99.png
  • $$\alpha$$ -methyl cyclohexanone
  • 2-Methyl cyclohexanone
  • heptanone-2
  • methyl cyclohexanone
The correct IUPAC name of $$CH_3CH_2CH(CH_3)CH(CH_3)CH(C_2H_5)_2$$ is :
  • 4-Ethyl-3-methylhexane
  • 3-Ethyl-4,5-dimethylheptane
  • 4-Methyl-3-ethylhexane
  • 2,4-Diethylpentane
$$IUPAC$$ Name of is :
1316604_29559311fb40496ca345efbce55cb6d6.png
  • $$2-Ethyl-3-methyl epoxy\ butane$$
  • $$4-Ethyl-4-methyl\ oxetane$$
  • $$2-Ethyl-4-methyl\ oxetane$$
  • $$2-Ethyl-2-methyl\ oxetane$$
In which of the following pair of elements the pi-bond formation tendency is maximum
  • S and O
  • Si and O
  • P and O
  • Cl and O
The correct IUPAC of the following 
compound -
1349801_87bfd0d09d7944528aa26c0643efe503.PNG
  • 7 -nitro-4-(carboxmethyl) heptanoic acid
  • 6-nitro-3-(carboxy ethyl) hexanoic acid
  • 4-(3-nitro propyl) hexane -1, 6-odioic acid
  • 3-(3-nitro propyl) hexane-1, 6-dioic acid
The IUPAC name of 
1345332_80f720e1bd224a13a5f82d2d7066f3ca.PNG
  • N,N-dimethylmethanal
  • N,N-dimethylmethanamide
  • N,N-dimethylcarbaldehyde
  • None of these
Two compounds X and Y have the same molecular formula $$C_3H_6O$$. Identify the functional groups and structural formula of X and Y. 
  • -CHO and -CO, X = $$CH_3CH_2CHO$$, Y = $$CH_3COCH_3$$
  • -CHO and -CO, X = $$CH_3CH_2OCH_3$$, Y = $$CH_3COCH_3$$
  • -CO and -COOH, X = $$CH_3COCH_3$$, Y = $$CH_3COOH$$
  • -CHO and -COOH, X = $$CH_3CH_2OCH_3$$, Y = $$CH_3CH_2COOH$$
How many bonds are there in 
1367295_92c9b68661c14f0c8d5de236441cf12b.PNG
  • $$14\sigma,\ 8\pi $$
  • $$18\sigma,\ 8\pi $$
  • $$19\sigma,\ 4\pi $$
  • $$14\sigma,\ 2\pi $$
Ethyl alcohol containing 9.5 % methyl alcohol land 0.5 %  pyridine is called : 
  • spirt
  • denaturated spirit
  • rectified spirit
  • absolute alcohol
In the given compound which functional group is absent ?
1414229_d7a0525bcd8b4d539cca75ee91790bcb.PNG
  • Ketone
  • Ether
  • Amide
  • Ester
Which of the following is correct for hydbridization of C-atom?
  • $$CH_{4}-SP^{3}$$
  • $$C_{2}H_{4}-sp^{2}$$
  • $$C_{2}H_{2}-sp$$
  • All of these
Carbon and hydrogen are estimated in organic compounds by:
  • Kjeldahl's method
  • Duma's method
  • Liebig's method
  • Carius method
Which of the following molecule have both $$ P \pi - p \pi $$ and $$ p \pi -d \pi $$ bonding?
  • $$ CIO^+_ 2 $$
  • $$ NO^+_2 $$
  • $$ SO^{2-}_3 $$
  • $$ CIO^-_4 $$

In which of the following func-tional group isomerism is not possible? 

1) Alcohols 
2) Aldehydes 
3) Alkyl halides 
4) Cyanides

 
  • $$1, 2, 3$$ and $$4$$ are correct
  • $$1$$ and $$2$$ only are correct
  • $$2$$ and $$3$$ only are correct
  • $$3$$ only is correct
Which of the following has highest bond strength?
  • $$
    2 p \pi-2 p \pi
    $$
  • $$
    2 p \pi-3 p \pi
    $$
  • $$
    3 d \pi-3 d \pi
    $$
  • $$
    1 s-2 p
    $$
Prussian blue colour is obtained by mixing together an aqueous solution of $$ Fe^{3+} $$ salt with:
  • ferricyanide
  • ferrocyanide
  • hydrogen cyanide
  • sodium cyanide
In the estimation of carbon and hydrogen, if the substance also contains nitrogen, then near the exit, it is placed:  
  • a roll of silver
  • a bright copper gauge spiral
  • ammonium sulphate
  • a layer of lead chromate
The first organic compound prepared from inorganic compounds was.
  • Acetic acid
  • Methane
  • Urea
  • Ethyl alcohol
The first organic compound synthesised in the laboratory from its elements.
  • Urea
  • Methane
  • Ethylene
  • Acetic acid
Which of the following reagents is used for the separation of acetaldehyde from acetophenone? 
  • $$ NH_2OH $$
  • $$ NaOHI_2 $$
  • $$ NaHSO_3 $$
  • $$ C_6H_5NHNH_2 $$

Correct IUPAC name of compound is:
1807094_b20008bc295e457ca012517424b7953a.png
  • $$3-$$ trimethyl hexane
  • $$3-$$ Methyl hexane
  • $$4-$$ methyl hexane
  • $$4-$$Methyl pentane
In carbon and hydrogen estimation, the saphnolite (a resin) absorbs: 
  • $$ N_2 $$
  • Water vapours
  • both $$ CO_2 $$ and $$ H_2 O $$
  • Only $$CO_2 $$
How many sigma and pi-bonds are there in the molecule of dicyanoethene $$(CN-CH=CH-CN)?$$
  • $$3$$ sigma and $$3$$ pi
  • $$5$$ sigma and $$2$$ pi
  • $$7$$ sigma and $$5$$ pi
  • $$2$$ sigma and $$3$$ pi
Number of pi bonds in $$H_2C=CH-CH=CH-C\equiv CH$$ is?
  • $$2$$
  • $$3$$
  • $$4$$
  • $$5$$
Number of pi-electrons present in naphthalene is?
  • $$4$$
  • $$6$$
  • $$10$$
  • $$14$$
The correct IUPAC name for $${H}_{2}C=CH-C\equiv CH$$ is
  • but-3-en-1-yne
  • but-1-en-3-yne
  • but-1-yn-3-ene
  • but-3-yn-1-ene
The IUPAC name of 4-isopropyl m-xylene is:
  • 1-isopropyl 2,4-dimethylbenzene
  • 4-isopropyl-m-xylene
  • 1-isopropyl-3,5-dimethylbenzene
  • 4-isopropyl-3,5-dimethylbenzene
The IUPAC name of the given is
1717633_834afd770b2746a3be2b0fa48ab3d89e.PNG
  • 2-ethyl-3-methyl-butanoyl chloride
  • 2,3-dimethyl pentanoyl chloride
  • 3,4-dimethyl pentanoyl chloride
  • 1-chloro-1-oxo-2,3-dimethyl pentane
The grouping >CO is present in: 
  • ethers
  • alcohols
  • ketones
  • None of these
$$ CH_2 COCI $$ is used to detect the number of amino group in the organic compounds. When a compound of molecular mass 180 is acetylated,gives a compound of molecular massThe number group in the compounds is
  • 1
  • 5
  • 2
  • 4
The IUPAC name of tertiary butyl iodide is:
  • 1-iodo-3-methyl propane
  • 2-iodo-2-methyl propane
  • 4-iodobutane
  • 2-iodobutane
Which of the following names are correct for the compound?
$${ \left( { CH }_{ 3 } \right)  }_{ 2 }CHCN$$
  • 2-Methyl propane nitrile
  • Isobutyronitrile
  • Isopropyl cyanide
  • All are correct
State whether the following statement is True or False.

Ethyl alcohol and dimethyl ether are position isomers.
  • True
  • False
The IUPAC name for diglyme is
$${CH}_{3}O{CH}_{2}{CH}_{2}O{CH}_{2}O{CH}_{3}$$
  • 2,5,8 trioxanonane
  • bis(2-methoxy ethyl) ether
  • $$\beta,\beta'$$-dimethoxy-diethyl ether
  • diethylene glycol dimethyl ether
The chemical name of DDT is
  • Dichloro dinitrotoluene
  • Dichloro dimethyl toluene
  • $$p,p-dichloro$$ diphenyl trichloroethane
  • None of the above
The number of $$\pi$$-bonds in the following compound $$O_2N-C\equiv C-NO_2$$ is:
  • $$2$$
  • $$3$$
  • $$4$$
  • $$1$$
The functional groups present in 'salol' are
  • $$-NH_{2}$$ and $$-OR$$
  • $$-OH$$ and $$-COR$$
  • $$-NH_{2}$$ and $$-COOH$$
  • $$-OH$$ and $$-COOR$$
The sigma and $$ \pi-bonds $$ present in benzene ring are:
  • Three sigma and three pi
  • Twelve sigma and three pi
  • Six pi and three sigma
  • Nine sigma and three pi
In which of the following method of purification, metal is converted to its volatile compound which is decomposed to give pure metal?
  • Heating with stream of carbon monoxide
  • Heating with iodine
  • Liquation
  • Distillation
Which of the following has $$\pi-d\pi$$ bonding?
  • $$NO_{3}^{-}$$
  • $$SO_{3}^{2-}$$
  • $$BO_{3}^{2-}$$
  • $$CO_{3}^{2-}$$
The compound formed in the positive test for nitrogen with the Lassaigne solution of an organic compound is
  • $$Fe_{4}[Fe(CN)_{6}]_{3}$$
  • $$Na_{3}[Fe(CN)_{6}]$$
  • $$Fe(CN)_{3}$$
  • $$Na_4[Fe(CN)_{5}NOS]$$
The functional group present in propanol and propanal respectively are
  • $$-OH$$ and $$-CHO$$
  • $$-OH$$ and $$-COOH$$
  • $$-CHO$$ and $$-COOH$$
  • $$-CHO$$ and $$-CO$$
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