71. An ester used as medicine is
A
ethyl acetate
B
methyl acetate
C
methyl salicylate
D
ethyl benzoate
Answer :
methyl salicylate
72.
What type of forces bind the substrate to the active site of enzyme?
(i) Ionic bonding
(ii) Hydrogen bonding
(iii) van der Waals' forces
(iv) Reaction with functional group of enzymes
A
(i), (ii) and (iv)
B
(i), (iii) and (iv)
C
(i), (ii) and (iii)
D
(i), (ii), (iii) and (iv)
Answer :
(i), (ii) and (iii)
73. Which of the following is not a surfactant?
A
$$C{H_3} - {\left( {C{H_2}} \right)_{15}} - {N^ + }{\left( {C{H_3}} \right)_3}B{r^ - }$$
B
$$C{H_3} - {\left( {C{H_2}} \right)_{14}} - C{H_2}N{H_2}$$
C
$$C{H_3} - {\left( {C{H_2}} \right)_{16}} - C{H_2}OSO_2^ - N{a^ + }$$
D
$$OHC - {\left( {C{H_2}} \right)_{14}} - C{H_2} - CO{O^ - }N{a^ + }$$
Answer :
$$C{H_3} - {\left( {C{H_2}} \right)_{14}} - C{H_2}N{H_2}$$
74. Which of the following is not true about drug receptors?
A
Receptor proteins are embedded in the cell membrane.
B
The chemical known as chemical messengers are received at the binding sites of receptors.
C
The receptors show selectivity for one chemical messenger over the other
D
Receptor protein is decomposed and destroyed after removal of chemical messenger.
Answer :
Receptor protein is decomposed and destroyed after removal of chemical messenger.
75. Which of the following is an example of non-biodegradable detergent?
A
B
C
D
Answer :
76. Antihistamines are not helpful
A
in curing nasal allergies
B
in treating rashes caused by itching
C
in bringing down acute fever
D
in vasodilation
Answer :
in bringing down acute fever
77. What is tincture of iodine?
A
$$2{\text{ - }}3\% $$ solution of iodine in alcohol-water mixture.
B
A mixture of iodine in chloroxylenol.
C
A mixture of $$0.2\% $$ phenol and $$2{\text{ - }}3\% $$ iodine in water.
D
$$2{\text{ - }}3\% $$ solution of iodine in potassium iodide.
Answer :
$$2{\text{ - }}3\% $$ solution of iodine in alcohol-water mixture.
78. Which of the following is not an antibiotic?
A
Chloramphenicol
B
Ofloxacin
C
Penicillin
D
Prontosil
Answer :
Prontosil
79. An antibiotic with a broad spectrum
A
kills the antibodies
B
acts on a specific antigen
C
acts on different antigens
D
acts on both the antigens and antibodies
Answer :
acts on different antigens
80.
Match the column I with column II and mark the appropriate choice.
| Column I | Column II | ||
|---|---|---|---|
| a. | $$C{H_3}{\left( {C{H_2}} \right)_{10}}C{H_2}OSO_3^ - N{a^ + }$$ | 1. | Cationic detergent |
| b. | $${\left[ {C{H_3}{{\left( {C{H_2}} \right)}_{15}}N{{\left( {C{H_3}} \right)}_2} - C{H_3}} \right]^ + }B{r^ - }$$ | 2. | Non-ionic detergent |
| c. | $$C{H_3}{\left( {C{H_2}} \right)_{16}}COO{\left( {C{H_2}C{H_2}O} \right)_n}C{H_2}C{H_2}OH$$ | 3. | Soap |
| d. | $${C_{17}}{H_{35}}COONa$$ | 4. | Anionic detergent |
A
a - 3, b - 2, c - 4, d - 1
B
a - 2, b - 4, c - 1, d - 3
C
a - 1, b - 3, c - 4, d - 2
D
a - 4, b - 1, c - 2, d - 3
Answer :
a - 4, b - 1, c - 2, d - 3