Chemistry Test

Result

Chemistry Test - 4

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Weekly Quiz Competition

Question 1
3 / -1

The correct match between items of List-I and List-II is:

A
(A)−(S), (B)−(R), (C)−(Q), (D)−(P)

B
(A)−(R), (B)−(S), (C)−(P), (D)−(Q)

C
(A)−(R), (B)−(S), (C)−(Q), (D)−(P)

D
(A)−(S), (B)−(R), (C)−(P), (D)−(Q)

Solution

→ Phenelzine contains hydrazine(2-phenylethylhydrazine)

→ Ranitidine contains furan ring
Question 2
3 / -1

Which of the following is not a bactericidal Antibiotic:

A
Penicillin

B
Amoxycillin

C
Ofloxacin

D
Tetracycline

Solution

Tetracycline is a bacteriostatic antibiotic. Bactericidal antibiotics are antibiotics which can kill bacteria and Bacteria-static are which can inhibit the growth of bacteria. Ofloxacin is bactericidal antibiotic. Ofloxacin is a fluoroquinolone carboxylic acid antibacterial showing bactericidal effects by inhibition of DNA gyrase.
Question 3
3 / -1

Assuming that both, amide and ester bonds of Aspartame are hydrolysed in the stomach, the amino acids obtained is:

A

B

C
Both (A) and (B)

D
None of these

Solution
Question 4
3 / -1

Following are the structures of three drugs A, B and C , respectively,

A
Paracetamol, Phenacetin, Aspirin.

B
Phenacetin, Paracetamol, Aspirin.

C
Aspirin, Phenacetin, Paracetamol.

D
Paracetamol, Aspirin, Phenacetin.

Solution

Paracetamol is N-(4-hydroxyphenyl) ethanamide, which is a hydroxy group containing compound.

Phenacetin is N-(4-ethoxyphenyl) ethanamide, which is an amide and ethoxy group containing compound.

Aspirin is 2-acetoxybenzoic acid, which is an ester.
Question 5
3 / -1

Which of the following drug is capable of destroying microorganisms?

A
Tetracycline

B
Erythromycin

C
Ofloxacin

D
Chloramphenicol

Solution

Antibiotics can be classified as bactericidal and bacteriostatic on the basis of the effect, it has on microbes. Bactericidal drugs have killing/destroying effect on microbes while, bacteriostatic have inhibiting effect on microbes. A few examples of the two types of antibiotics are as follows: Bactericidals are Penicillin, Aminoglycosides, Ofloxacin. Bacteriostatics are Erythromycin, Tetracycline, Chloramphenicol.
Question 6
3 / -1

Which of the following is employed as Antihistamine?

A
Chloramphenicol

B
Diphenhydramine

C
Norethindrone

D
Omeprazole

Solution

Chloramphenicol is a broad spectrum antibiotic. Norethindrone is an antifertility drug. Omeprazol is an antacid and Diphenhydramine is an antihistamine mainly used to treat allergies.
Question 7
3 / -1

Which of the following is an artificial edible colour?

A
Saffron

B
Carotene

C
Tartrazine

D
Melamine

Solution

Tartrazine impart colour, it is artificial edible colour. It is used generally for yellow colour in food. It is stable compound because it contains 6 membered aromatic ring in which four atoms are nitrogen atoms, and it's chemical formula is C₂H₂N₄.
Question 8
3 / -1

What are lysergic acid diethylamide (LSD) and mescaline?

A
Anti-malarials

B
Psychedelic drugs

C
Hypnotics

D
Anaesthetics

Solution

LSD and mescaline are psychedelic drugs.

These produce visual and auditory hallucinations.
Question 9
3 / -1

The substances which do not act as antiseptic are:

(a) Iodoform

(b) H₂O₂

(c) Diphenhydramine

(d) Soframycin

(e) Amoxycillin

(f) Ranitidine

A
c, e and f

B
b, c and e

C
a, d and f

D
b, d and e

Solution

Ranitidine is antacid; amoxicillin is an antibiotic while diphenhydramine is an antihistamine.
Antiseptics and disinfectants are also the chemicals which either kill or prevent the growth of microorganisms. Antiseptics are applied to the living tissues such as wounds, cuts, ulcers and diseased skin surfaces. Hydrogen peroxide, iodoform and soframycin act as antiseptics.
Question 10
3 / -1

A chemist has 4 samples of artificial sweetener A , B , C and D . To identify these samples, he performed certain experiments and noted the following observations:

(i) A and D both form blue-violet colour with ninhydrin.

(ii) Lassaigne extract of C gives positive AgNO3 test and negative Fe4[Fe(CN)6]3 test.

(iii) Lassaigne extract of B and D gives positive sodium nitroprusside test. Based on these observations which option is correct?

A
A : Aspartame; B : Saccharin; C : Sucralose; D : Alitame

B
A : Alitame; B : Saccharin; C : Aspartame; D : Sucralose

C
A : Saccharin; B : Alitame; C : Sucralose; D : Aspartame

D
A : Aspartame; B : Alitame; C : Saccharin; D : Sucralose

Solution

A− Aspartame

B− Saccharine

(i) A & D give positive test with ninhydrin because both have free carboxylic and amine groups.

(ii) C form precipitate with AgNO₃ in the Lassaigne extract of the sugar because it has chlorine atoms.

(iii) B & D give positive test with sodium nitroprusside because both have sulphur atoms