Question 1 : Arrange the following types of polymer in order of decreasing force of attraction.<div><br/>   Fibres        Elastomer                Thermoplastic<br/>      (I)                 (II)                               (III)<br/></div>
Question 2 :
$CH\equiv CH\quad \xrightarrow {X}\quad CH_2=CHCl\quad \xrightarrow Y\quad -(-CH_2-CHCl-\overset {\overset {\text{Cl}}|}{C}H-)_n-$<br>Fill up the blanks with suitable reagents to show synthesis of polyvinyl chloride.
Question 3 : Match the column I with column II and mark the appropriate choice.<br><table class="wysiwyg-table"><tbody><tr><td></td><td>Column I</td><td></td><td>Column II</td></tr><tr><td>(A)</td><td>PVC</td><td>(i)</td><td>Rubber</td></tr><tr><td>(B)</td><td>Condensation polymer</td><td>(ii)</td><td>Thermoplsatic</td></tr><tr><td>(C)</td><td>Polysaccharide</td><td>(iii)</td><td>Dacron</td></tr><tr><td>(D)</td><td>Elastomer</td><td>(iv)</td><td>Natural Polymer</td></tr></tbody></table>
Question 4 :
Which of the following pair of monomers are used in preparation of PHBV ?
Question 5 :
The formation of polyethylene from calcium carbide takes places as follows :<br/>$CaC_2 + 2H_2O \rightarrow Ca(OH)_2+C_2H_2$<br/>$C_2H_2+H_2\rightarrow C_2H_4$<br/>$nC_2H_4\rightarrow (CH_2-CH_2)_n$<br/>The amount of polyethylene obtained from $64$ kg of $CaC_2$ is :
Question 6 :
The most suitable property for molecular weight determination of polymers is:
Question 8 :
If $N_1,\ N_2, \ N_3,....$ are the number of molecules with molecular masses $M_1,\ M_2,\ M_3, ...$ respectively, then mass average molar mass is expressed as :
Question 10 :
Assertion: Ebonite is highly vulcanised rubber.
Reason: Perlon is used in the manufacture of fibres.
Question 11 :
When 0.01 mole of a cobalt complex is treated with excess silver nitrate solution, 4.305 g silver chloride is precipitated. The formula of the complex is:<br/>
Question 18 :
Which of the following is correct IUPAC name of any complex compound?
Question 19 :
The correct name of, $\displaystyle \left [ Ni\left ( DMG \right )_{2} \right ]$ a cherry red precipitate is:
Question 20 :
Select the correct I.U.P.A.C name for $Mo(\sigma - C_3H_5)(\pi - C_5H_5)(CO)_3$ :<br>
Question 22 :
When $ CuSO_4 $ solution is added to $ K_4[Fe(CN)_6] $ the formula of the product formed is
Question 25 :
Thionyl chloride is preferred in the preparation of chloro compound from alcohol since:
Question 27 :
What are the products in the following reactions.<br/>$C_2H_5OH + PCl_5 \rightarrow  A + B + C $<br/>
Question 28 :
Choose the correct answer among the alternatives given :Bromination of methane in presence of sunlight is a:
Question 29 :
Which of the following solvent will give maximum yield for an alkyl halide undergoing $S_N1$ mechanism?
Question 30 :
The reaction conditions leading to the best yield of $C_2H_5Cl $ are:
Question 31 :
Which of the following statement is incorrect for bimolecular nucleophilic substitution reaction $(SN_2)$ ?
Question 32 :
The principal organic product formed in the reaction is:<br/>$CH_2 = CH(CH_2)_8 COOH + HBr \xrightarrow [  ]{Peroxide}$  <br/>
Question 33 :
Alkyl bromide is prepared by heating alcohol with ______ phosphorus in the presence of bromine gas.
Question 36 : The order of reactivity of following alcohols with halogen acids is:<div><br/>(A)  $C{ H }_{ 3 }C{ H }_{ 2 }-C{ H }_{ 2 }-OH$<div><br/>(B)  $C{ H }_{ 3 }-C{ H }_{ 2 }-\underset { \overset { | }{ C{ H }_{ 3 } }  }{ C } H-OH$</div><div><br/>(C)  $C{ H }_{ 3 }-C{ H }_{ 2 }-\overset { \underset { | }{ C{ H }_{ 3 } }  }{ \underset { \overset { | }{ C{ H }_{ 3 } }  }{ C }  } -OH$</div></div>
Question 37 : In which of the following reactions proceeds by $S_N1$ mechanism?<br/>(I)$(A) + SOCl_2 \longrightarrow$<br/><div>(II) $(A) + COCl_2 \longrightarrow$<br/>(III) $(A) + SOCl_2 \overset{Pyridine}{\longrightarrow}$<br/>(IV) $(A) + COCl_2 \overset{Pyridine}{\longrightarrow}$</div>
Question 39 :
Substances whose solutions can readily diffuse through animal membranes are called:
Question 40 :
For the conversion of oxygen to ozone in the atmosphere, nitric oxide in gaseous phase acts as:
Question 41 : <div>Consider the following statements and arrange in the order of true/false as given in the codes.<br/></div>$S_1: $ The rate of the reaction A $\rightarrow$ B having the rate law $- \displaystyle \frac{d[A]}{dt} = k [A] [B]$ when plotted against time will exhibit a maximum at some time.<br/>$S_2: $ A catalyst in a chemical reaction increases the forward E$_a$ and decreases the backward $E_a$<br/>$S_3: $ A catalyst in a chemical reaction decreases both forward and backward $E_a$<br/>$S_4: $ For a first-order reaction, the time required to reduce successively the concentration of reactant by a constant fraction is always same.<br/>
Question 43 :
Assertion: A catalyst is more effective in finely divided form.
Reason: Finely divided form has more surface area.
Question 47 :
Finally divided catalyst has a greater surface area and has greater catalytic activity than the compact solid. If a total surface area of $6291456\, cm^2$ is required for adsorption of gaseous reaction in a catalyzed reaction,then how many splits should be made in a cube of exactly 1 cm in length.[Given: One split of a cube gives eight cubes of the same size]
Question 49 :
Whenever a mixture of gases is allowed to come in contact with a particular adsorbent under the same conditions, the more strong adsorbate is adsorbed to greater extent irrespective of its amount present. For e.g. $\displaystyle H_{2}O$ is adsorbed to a greater extent on silica gel than $\displaystyle N_{2}$ and $\displaystyle O_{2}$. This shows that some adsorbates are preferentially adsorbed. It is also observed that preferentially adsorbable adsorbents can displace a weakly adsorbed substance from the surface of an adsorbent. Which of the following gase(s) is/are adsorbed to maximum extent?
Question 50 :
Which of the following kinds of catalysis can be explained by the adsorption theory?
