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Published on: 22/08/2026
Download Tamil Nadu 12th Standard Chemistry question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.
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1.
Which is the monomer of neoprene in the following?
\(\mathrm{CH}_{2}=\mathrm{CH}-\mathrm{C} \equiv \mathrm{CH}\)
\(\mathrm{CH}_{2}=\mathrm{CH}-\mathrm{CH}=\mathrm{CH}_{2}\)
2.
Which of the following not correctly matched?
3.
Nylon- 6
Nylon - 5
Nylon- 2 nylon - 6
Nylon - 6,6
4.
Nylon - 2,6
Nylon - 6
Nylon-2-Nylon-6
Nylon - 6,6
5.
Arsenic drugs are mainly used in the treatment of _____________.
Jaundice
Typhoid
Syphilis
Cholera
6.
Bithional is generally added to soaps as an additive to function as a/an ______________.
Drier
Buffering agent
Antiseptic
Softner
7.
3 - hydroxyl butanoic acid and 3 - hydroxy Pentanoic acid polymerise to give ________________.
PHBV
PHB
PLA
PCL
8.
Novolac is a _______ polymer of phenol and formaldehyde.
Linear
Cross linked
Soft and Stretchy
Addition
9.
The monomer of Teflon is _______________.
CF2 = CHF
CHF = CHF
CF2 = CF2
CF2 = CH2
10.
Polythene and PVC are _________ polymers.
natural
synthetic
semi synthetic
none
11.
Detergents are superior to soaps as they can be used even in ____________.
soft water and acidic conditions
soft water and basic conditions
hard water in acidic conditions
hard water only
12.
In a soap molecule, the polar end is not soluble in ______________.
water
oil
greases
both (a) & (c)
13.
It is an artificial sweerener _____________.
Sorbitol
Xylitol
Mannitol
Sucralose
14.
It is a sugar substituent _____________.
Sorbitol
Saccharin
Aspartame
Alitame
15.
It is not a preservative _______________.
Benzoic acid
Acetic acid
Sodium metabisulphite
Sucrose esters of palmitic acid
16.
Opioids are __________ analgesics.
non-narcotic
narcotic
salicylate
none
17.
___________ supress the neuro transmitters that causes pain.
Morphine
Caffeine
Both (a) & (b)
none
18.
______ is not an antibiotic drug
Amoxicillin
Cefpodoxim
Amlodipine
Erythromycin
19.
It is a biodegradable polymer _______________.
PHB
PHBV
PLA
All the above
20.
It is an amide-linked local anaesthetic _______________.
Procaine
Lidocaine
Propofol
Isoflurane
21.
The medicinal value of a drug is measured in terms of its ___________________.
Deoxyribose
Gold number
Therapeutic index
Equilibrium constant
22.
Glyptal is a polymer of _______
ethylene glycol and terypthaliic acid
ethylene glycol and pthalic acid
adipic acid and hexamethelene diamine
phenol and formaldehyde
23.
Phenacetin is _______
antipyretic
analgesic
antibiotic
antiseptic
24.
A 1% solution of phenol is a _______
antiseptic
disinfectant
antimalarial drug
anthithistamine
25.
The anaesthetic which is administered by injection is ________
Isoflurane
Propofol
Morphine
Codeine
26.
Oxidation of fats and oils is prevented by ____________.
BHT(Butyl hydroxy toluene)
BHA(Butyl hydroxy anisole)
Both (a) and (b)
Neither (a) nor (b)
27.
The polymer used in making blankets (artificial wool) is _______.
polystyrene
PAN
polyester
polythene
28.
Which of the following is a co-polymer?
Orlon
PVC
Teflon
PHBV
29.
Which one of the following is a bio-degradable polymer?
HDPE
PVC
Nylon 6
PHBV
30.
Natural rubber has _______.
alternate cis- and trans-configuration
random cis- and trans-configuration
all cis-configuration
all trans-configuration
1.
(a)
2.
(b)
3.
(a)
Nylon- 6
4.
(c)
Nylon-2-Nylon-6
5.
(c)
Syphilis
6.
(c)
Antiseptic
7.
(a)
PHBV
8.
(a)
Linear
9.
(c)
CF2 = CF2
10.
(b)
synthetic
11.
(c)
hard water in acidic conditions
12.
(a)
water
13.
(d)
Sucralose
14.
(a)
Sorbitol
15.
(d)
Sucrose esters of palmitic acid
16.
(b)
narcotic
17.
(a)
Morphine
18.
(c)
Amlodipine
19.
(d)
All the above
20.
(b)
Lidocaine
21.
(c)
Therapeutic index
22.
(b)
ethylene glycol and pthalic acid
23.
(a)
antipyretic
24.
(b)
disinfectant
25.
(c)
Morphine
26.
(c)
Both (a) and (b)
27.
(b)
PAN
28.
(d)
PHBV
29.
(d)
PHBV
30.
(c)
all cis-configuration
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