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Published on: 28/11/2025
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?
.JPG)
\(\mathrm{CH}_{2}=\mathrm{CH}-\mathrm{C} \equiv \mathrm{CH}\)
\(\mathrm{CH}_{2}=\mathrm{CH}-\mathrm{CH}=\mathrm{CH}_{2}\)
.JPG)
2.
Arsenic drugs are mainly used in the treatment of _____________.
Jaundice
Typhoid
Syphilis
Cholera
3.
Which is used as 'Morning after Pill'?
Nor ethindrone
Ethynyl estradiol
Mifepristone
Bithional
4.
3 - hydroxyl butanoic acid and 3 - hydroxy Pentanoic acid polymerise to give ________________.
PHBV
PHB
PLA
PCL
5.
The co - polymer of acrylonitrile and buta - 1 ,3 - diene is _____________.
Buna - S
Buna - N
Natural rubber
Neoprene
6.
The monomer of Teflon is _______________.
CF2 = CHF
CHF = CHF
CF2 = CF2
CF2 = CH2
7.
TiCl4 + (C2H5)3 Al is called ___________.
Cannizaro's catalyst
Zeiglar - Natta catalyst
Dory's catalyst
Friedel craft's catalyst
8.
It is a biodegradable polymer _______________.
PHB
PHBV
PLA
All the above
9.
Assertion: Paracetamol and aspirin are both antipyretics.
Reason: Both paracetamol and aspirin are controlled and reversible loss of conciousness by affecting central nervous system
Both assertion and reason are true and reason is the correct explanation for assertion.
Both assertion and reason are true and reason is not the correct explanation of assertion.
Assertion is true but reason is false.
Both assertion and reason are false.
10.
It is an amide-linked local anaesthetic _______________.
Procaine
Lidocaine
Propofol
Isoflurane
11.
The medicinal value of a drug is measured in terms of its ___________________.
Deoxyribose
Gold number
Therapeutic index
Equilibrium constant
12.
Penicillin is an example of ____________.
Analgenis
Antibiotic
Anaestheic
Antacid
13.
Cellulose is an example of _____ polymer.
synthetic
Natural
semisynthetic
none of the above
14.
The quality of a soap is described in term of _______
LDPE
HDPE
TFM (Total fatty matter)
LFM (Lowfatty matter)
15.
Oxidation of fats and oils is prevented by ____________.
BHT(Butyl hydroxy toluene)
BHA(Butyl hydroxy anisole)
Both (a) and (b)
Neither (a) nor (b)
16.
A mixture of chloro xylenol and terpinecol acts as ______________.
antiseptic
antipyretic
antibiotic
analgesic
17.
Regarding cross-linked or network polymers, which of the following statement is incorrect?
Examples are Bakelite and melamine
They are formed from bi and tri-functional monomers
They contain covalent bonds between various linear polymer chains
They contain strong covalent bonds in their polymer chain
18.
The polymer used in making blankets (artificial wool) is _______.
polystyrene
PAN
polyester
polythene
19.
Which of the following is a co-polymer?
Orlon
PVC
Teflon
PHBV
20.
21.
Which one of the following is a bio-degradable polymer?
HDPE
PVC
Nylon 6
PHBV
22.
Terylene is an example of _______.
polyamide
polythene
polyester
polysaccharide
23.
Nylon is an example of _______.
polyamide
polythene
polyester
poly saccharide
24.
Natural rubber has _______.
alternate cis- and trans-configuration
random cis- and trans-configuration
all cis-configuration
all trans-configuration
25.
Which one of the following structures represents nylon 6,6 polymer?
26.
27.
Drugs that bind to the receptor site and inhibit its natural function are called _______.
antagonists
agonists
enzymes
molecular targets
28.
Antiseptics and disinfectants either kill or prevent growth of microorganisms. Identify which of the following statement is not true.
dilute solutions of boric acid and hydrogen peroxide are strong antiseptics.
Disinfectants harm the living tissues
A 0.2% solution of phenol is an antiseptic while 1% solution acts as a disinfectant
Chlorine and iodine are used as strong disinfectants
29.
Dettol is the mixture of _____________.
Chloroxylenol and bithionol
Chloroxylenol and \(\alpha\)-terpineol
phenol and iodine
terpineol and bithionol
30.
Which of the following is an analgesic?
Streptomycin
Chloromycetin
Asprin
Penicillin
1.
(a)
2.
(c)
Syphilis
3.
(c)
Mifepristone
4.
(a)
PHBV
5.
(b)
Buna - N
6.
(c)
CF2 = CF2
7.
(b)
Zeiglar - Natta catalyst
8.
(d)
All the above
9.
(c)
Assertion is true but reason is false.
10.
(b)
Lidocaine
11.
(c)
Therapeutic index
12.
(b)
Antibiotic
13.
(b)
Natural
14.
(c)
TFM (Total fatty matter)
15.
(c)
Both (a) and (b)
16.
(a)
antiseptic
17.
(d)
They contain strong covalent bonds in their polymer chain
18.
(b)
PAN
19.
(d)
PHBV
20.
(d)
21.
(d)
PHBV
22.
(c)
polyester
23.
(a)
polyamide
24.
(c)
all cis-configuration
25.
(d)
26.
(a)
27.
(a)
antagonists
28.
(a)
dilute solutions of boric acid and hydrogen peroxide are strong antiseptics.
29.
(b)
Chloroxylenol and \(\alpha\)-terpineol
30.
(c)
Asprin
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