NEET Chemistry Chapter Wise Mock Test – Organic and Environmental Chemistry I

NEET Chemistry Chapter Wise Mock Test – Organic and Environmental Chemistry I

 

Question 1:

Question 2:
In the mechanism of Hofmann reaction, which intermediate rearranges to alkyl isocyanate?
(a) Bromamide
(b) Nitrene
(c) Nitroso
(d) Amide

Question 3:

Question 4:

Question 5:

Question 6:

Question 7:

Question 8:

Question 9:
cis and trans-2-butene are
(a) conformational isomers
(b) optical isomers
(c) geometrical isomers
(d) position isomers

Question 10:
Which one of the following conformations of cyclohexane is chiral?
(a) Twist boat
(b) Rigid
(c) Chair
(d) Boat

Question 11:
Which of the following methods is/are used for the purification of solid impurities?
(a) Distillation
(b) Sublimation
(c) Crystallisation
(d) All of these

Question 12:
The fragnance of flowers is due to the presence of some steam volatile organic compounds called essential oils. These are generally insoluble in water at room temperature, but are miscible with water vapour in vapour phase. A suitable method for the extraction of these oils from the flowers is
(a) distillation
(b) crystallisation
(c) distillation under reduced pressure
(d) steam distillation

Question 13:
Distillation is used to separate liquids which differ in their boiling points by
(a) 5°C
(b) 10°C
(c) 30°-80°C
(d) 100°C

Question 14:

Question 15:

Question 16:

Question 17:
The major organic compound formed-by the reaction of 1,1,1-trichloroethane with silver powder is
(a) acetylene
(b) ethene
(c) 2-butyne
(d) 2-butene

Question 18:
Alkyl halide react with dialkyl,pepper reagents to give
(a) alkenyl halides
(b)alkanes
(c) alkyl copper halides
(d) alkenes

Question 19:
When a mixture of methane and oxygen is passed through heated molybdenum oxide, the main product formed is
(a) methanoic acid
(b) ethanal
(c) methanal
(d) methanol

Question 20:
The chemical added to leaded petrol to prevent the deposition of lead in the combustion chamber is
(a) iso-octane
(b) n-heptane
(c) ethylene dibromide
(d) All of these

Question 21:
Hydrolysis of ozonide of but-1-ene gives
(a) ethylene only
(b) acetaldehyde and formaldehyde
(c) propionaldehyde and formaldehyde
(d) acetaldehyde only

Question 22:

Question 23:
In its reaction with silver nitrate, acetylene shows
(a) oxidising property
(b) reducing property
(c) acidic property
(d) basic property

Question 24:

Question 25:
n-butylbenzene on oxidation will give
(a) benzoic acid
(b) benzaldehyde
(c) 4-phenyl butanoic acid
(d) benzyl alcohol

Question 26:
Heating a mixture of sodium benzoate and soda lime gives
(a) benzene
(b) methane
(c) sodium benzoate
(d) calcium benzoate

Question 27:

Question 28:
The most reactive among the following towards sulphonation is
(a) toluene
(b) nitrobenzene
(c) chlorobenzene
(d) m-xylene

Question 29:

Question 30:

Question 31:
Ozone layer is depleted due to
(a) chlorofluorocarbons
(b) oxides of nitrogen
(c) oxides of carbon
(d) Both (a) and (b)

Question 32:
Main sources of water and soil pollution is
(a) agro industry
(b) thermal power plant
(c) mining
(d) All of the above

Question 33:
Biochemical oxygen demand is a measure of organic material present in water. BOD value less than 5 ppm indicates a water sample to be
(a) rich in dissolved oxygen
(b) poor in dissolved oxygen
(c) higher polluted
(d) not suitable for aquatic life

Question 34:
Which of the following practices will not come under green chemistry?
(a) If possible, making use of soap made of vegetable oils instead of using synthetic detergents
(b) Using H2 02 for bleaching purpose instead of using chlorine based bleaching agents
(c) Using bicycle for travelling small distance instead of using petrol/diesel based vehicles
(d) Using plastic cans for neatly storing substances

Question 35:
Which one of the following is not an application of green chemistry?
(a) Replacement of CFCs by C02 as blowing agent in the manufacture of polystyrene foam sheets
(b) Reacting methylamine and phosgene to produce methyl isocyanate
(c) Replacement of organotins by ‘sea-nine’ as anti-fouling compound in sea marines
(d) Catalytic dehydrogenation of the diethanol amine without using cyanide and formaldehyde

Direction (Q .Nos. 36-37) In the following questions, more than one of the answers given may be correct. Select the correct answers and mark it according to the codes.
Codes
(a) 1, 2 and 3 are correct
(b) 1, and 2 areggffect
(c) 2 and 4 are correct
(d) 1 and 3 are correct

Question 36:

Question 37:

Direction (Q. Nos. 39-40) Each of these questions contains two statements : Assertion and Reason. Each of these questions also has four alternative choices, only one of which is the correct answer. You have to select one of the codes (a), (b), (c) and (d) given below.
(a) Assertion is true, Reason is true; Reason is a correct explanation for Assertion
(b) Assertion is true, Reason is true; Reason is not a correct explanation for Assertion
(c) Assertion is true, Reason is false
(d) Assertion is false, Reason is false

Question 38:

Question 39:
Assertion Among isomeric pentanes, 2, 2-dimethyl propane has the highest boiling point.
Reason Branching does not affect the boiling point.

Question 40:
Assertion lodination of alkanes is reversible.
Reason lodination is carried out in the presence of iodic acid.
Answers:

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