The set of monomers that forms a biodegradable polymer is:

1. H₂N-CH₂-COOH and H₂N-(CH₂)₅-COOH

2. HO-CH₂-CH₂-OH$$ $$and HOOC-C₆H₄-COOH

3. C₆H₅-CH=CH₂ and CH₂=CH-CH=CH₂

4. CH₂=CH-CN$$ $$and CH₂=CH-CH=CH₂

The catalytic activity of transition metals and their compounds is ascribed mainly to:

1. their unfilled d-orbitals
2. their ability to adopt variable oxidation states
3. their chemical reactivity
4. their magnetic behaviour

Consider the following reaction:
A₂(g) + B₂(g)  ⇋ 2AB(g)  
At equilibrium, the concentrations of  A₂ = 3.0×10^–3 M;  B₂ = 4.2×10^–3 M and AB = 2.8×10^–3M.
The value \(K_C\)  for the above-given reaction in a sealed container at 527°C is:

Standard reduction potentials of the half-reactions are given below: 

$F_{2\left(g\right)}$ $+$ $2e^{-}\to 2{F^{-}}_{\left(aq\right)}$ $;$ $E°$ $=+2.85$ $V$ $$

$C{l}_{2\left(g\right)}$ $+$ $2e^{-}\to 2{C{l}^{-}}_{\left(aq\right)}$ $;$ $E°$ $=+1.36$ $V$ $$

$B{r}_{2\left(g\right)}$ $+$ $2e^{-}\to 2{B{r}^{-}}_{\left(aq\right)}$ $;$ $E°$ $=+1.06$ $V$ $$

$I_{2\left(g\right)}$ $+$ $e^{-}\to 2{I^{-}}_{\left(aq\right)}$ $;$ $E°$ $=+0.53$ $V$ $$

The strongest oxidizing and reducing agents, respectively, are: 

1. $B{r}_2$ and $C{l}^{-}$

2. $C{l}_2$ and $B{r}^{-}$

3. $C{l}_2$ and $I_2$

4. $F_2$ and $l^{-}$

Four diatomic species are listed below. Identify the correct order in which the bond order is increasing in them.
1. O₂^– < NO < C₂^2– < He₂⁺  
2. C₂^2– < He₂⁺ < O₂^– < NO  
3. He₂⁺ < O₂^– < NO < C₂^2–
4. NO < O₂^– < C₂^2– < He₂⁺  

A low spin complex of $d^6$-cation in an octahedral field will have the following energy:

1.   $\frac{-12}{5}{∆}_0+3P$

2.  $\frac{-2}{5}{∆}_0+2P$

3.  $\frac{-2}{5}{∆}_0+P$

4.  $\frac{-12}{5}{∆}_0+P$

(${∆}_0$ = Crystal field splitting energy in an octahedral field, P = Electron pairing energy)

 A yellow precipitate with iodine and alkali is given by:

(i) Methyl acetate

(ii) Acetamide

(iii) 2-Hydroxypropane

(iv) Acetophenone

The orbital angular momentum of a p-electron is given as:
 

Which one of the following does not correctly represent the correct order of the property indicated against it?

Chloramphenicol is an:
1. antihistaminic
2. antiseptic and disinfectant
3. antibiotic-broad spectrum
4. antifertility drug