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Practical Organic Chemistry

NEET Chemistry · 18 questions · Page 2 of 2 · Click an option or "Show Solution" to reveal answer

Q11
Dettol is the mixture of
A chloroxylenol and bithional
B chloroxylenol and terpineol
C phenol and iodine
D terpineol and bithionol
Correct Answer
Option B
Solution

Dettol is the mixture of chloroxylenol and α\alpha-terpineol.

Q12
Antiseptics and disinfectants either kill or prevent growth of microgaisms. Identify which of the following statements is not true.
A Dilute solutions of boric acid and hydrogen peroxide are strong antiseptics.
B Disinfectants harm the living tissues.
C A 0.2% solution of phenol is an antiseptic while 1% solution acts as a disinfectant.
D Chlorine and iodine are used as strong disinfectants.
Correct Answer
Option A
Solution

Dilute solutions of boric acid and hydrogen peroxide are weak antiseptics.

Q13
Chloroamphenicol is an
A antifertility drug
B antihistaminic
C antiseptic and disinfectant
D antibiotic-broad spectrum
Correct Answer
Option D
Solution

Chloramphenicol is an antibiotic broad spectrum.

Q14
Which one of the following is employed as Antihistamine?
A Chloramphenicol
B Diphenylhydramine
C Norothindrone
D Omeprazole
Correct Answer
Option B
Solution

Diphenylhydramine is employed as antihistamine drug.

Q15
Which one of the following is employed as a tranquilizer drug?
A Promethazine
B Valium
C Naproxen
D Mifepriston
Correct Answer
Option B
Solution

Valium is a tranquilizer.

Q16
Which one of the following is employed as a tranquilizer?
A Naproxen
B Tetracycline
C Chlorpheninamine
D Equanil
Correct Answer
Option D
Solution

Equanil is an important medicine used in depression and hypertension.

Q17
Chloropicrin is obtained by the reaction of
A sream on carbon tetrachloride
B nitric acid on chlorobenzene
C chlorine on picric acid
D nitric acid on chloroform
Correct Answer
Option D
Solution

When CHCl 3 is treated with conc.

HNO 3 its hydrogen is replaced by NO 2 group to form chloropicrin.

CHCl 3 + HONO 2 →\to CNO 2 Cl 3 + H 2 O

Q18
Which of the following forms cationic micelles above certain concentration?
A Sodium dodecyl sulphate
B Sodium acetate
C Urea
D Ceryltrimethylammonium bromide.
Correct Answer
Option D
Solution

Cetyl trimethyl ammonium bromide forms cationic micelles above certain concentration.

In the molecules of detergents, the negative ions aggregate to form a micelle of colloidal size.

In polar medium like water the negative ion has a long hydrocarbon chain and a polar group –Br – at one end and on the other hand it has N + ion thus cationic micelle is formed.

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