A molecule that cannot be used as a food preservative is -

1. Table salt

2. Sodium hydrogen carbonate

3. Rock salt

4. Benzoic acid

The correct statement among the following regarding barbiturates is:

 Which of the following are sulpha drugs?

(a) Sulphapyridine

(b) Prontosil

(c) Salvarsan

(d) Nardil

(1) a, b

(2) a, c

(3) b, c

(4) b, d

Which of the following compounds are administered as antacids?

(a) Sodium carbonate

(b) Sodium hydrogen carbonate

(c) Aluminium carbonate

(d) Magnesium hydroxide

(1) b,c

(2) a,d

(3) b,d

(4) c,d

An anionic detergent among the following is/are:

1. a and b
2. a and c
3. a and d
4. b and d

The correct statement among the following is:

1. a, c and d
2. a, b and c
3. b and c
4. c and d

Match the soaps given in Column I with items given in column II.

Choose the correct option:

Match the structures given in Column I with the type of detergents given in Column II.

Choose the correct one:

Match the detergents given in Column I with their uses in Column II.

Column I	Column II
A. ${\left[\right]}^{}$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ ${\mathrm{CH}}_3$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $|$ ${\mathrm{CH}}_3{\left({\mathrm{CH}}_2\right)}_{15}$ $-$ $\mathrm{N}$ $-$ ${\mathrm{CH}}_3$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $|$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ ${\mathrm{CH}}_3+$ ${\mathrm{Br}}^{-}$	powder
B.	soap
C. C17H35COO−Na+ + Na2CO3 + Rosin	conditioners
CH2CH2OH	paste

Choose the correct option:

Match the class of compounds given in Column I with their functions given in Column II.

       Column I                             Column II

A. Antagonists                1. Communicate messages between two neurons and that between neurons to muscles. 
B. Agonists                     2. Bind to the receptor site and inhibit its natural function. 
C. Chemical messenger 3. Crucial to the body's communication process.
D. Inhibitors                    4. Mimic the natural messenger.
E. Receptors                   5. Inhibit the activities of enzymes

Match the correct one:

1) A-2, B-1, C-4, D-5, E-3

2) A-2, B-4, C-1, D-5, E-3

3) A-4, B-2, C-1, D-5, E-3

4) A-2, B-4, C-1, D-3, E-5