Question
Explain the relationship between basicity and structure of amines.

Answer

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Differentiate between $1^{\circ}, 2^{\circ}$ and $3^{\circ}$ alcohols by catalytic dehydrogenation.
The rate constant for the first order decomposition of $H_2O_2$​​​​​​​ is given by the following equation:
log $k = 14.34 – 1.25 \times 10^4K/T$
Calculate $E_a​​​​​​​$​​​​​​​ for this reaction and at what temperature will its half-period be $256$ minutes?
What is vapour pressure? When a non- volatile solute is dissolved in any liquid, the vapour pressure of the liquid decreases. Give reason.
Match the catalysts given in Column I with the processes given in Column II.
 
Column I (Catalyst)
 
Column II (Process)
(i)
Ni in the presence of hydrogen
(a)
Zieglar Natta catalyst
(ii)
$Cu_2Cl_2$
(b)
Contact process
(iii)
$V_2O_5$
(c)
Vegetable oil to ghee
(iv)
Finely divided iron
(d)
Sandmeyer reaction
(v)
$TiCl_4 + Al (CH_3)_3$
(e)
Haber’s Process
 
 
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Decomposition of $KClO_3$
Derive formula for degree of dissociation and degree of condensation of the solute in the solvent.
  1. Which poisonous gas is evolved when white phosphorus is heated with conc. $NaOH$ solution? Write the chemical equation.
  2. Write the formula of first noble gas compound prepared by $N$. Bartlett. What inspired $N$. Bartlett to prepare this compound?
  3. Fluorine is a stronger oxidizing agent than chlorine. Why?
  4. Write one use of chlorine gas.
  5. Complete the following equation: $CaF_2 + H_2SO_4 \xrightarrow{\text{ }\ \ \ \ \ \ \ \ \ \ \ \ }$
Match the properties given in Column I with the metals given in Column II.
 
Column I (Property)
 
Column II (Metal)
$(i)$
Element with highest second ionisation enthalpy
$(a)$
$Co$
$(ii)$
Element with highest third ionisation enthalpy
$(b)$
$Cr$
$(iii)$
$M$ in $M$ $(CO)6$ is
$(c)$
$Cu$
$(iv)$
Element with highest heat of atomisation
$(d)$
$Zn$
   
$(e)$
$Ni$
Attempt any five of the following:
(a) What is the structural feature characterising reducing sugars?
(b) What type of linkage is present in polysaccharides?
(c) Give examples of fat soluble vitamins.
(d) The two strands in DNA are not identical but are complementary. Explain.
(e) Write uses of B-Complex.
(f) Name the disaccharide which on hydrolysis gives two molecules of glucose.
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When kept in water, raisin swells in size. Name and explain the phenomenon involved with the help of a diagram. Give three applications of the phenomenon.
For an elementary reaction:
$2 A+B \rightarrow 3 C$
the rate of appearance of $C$ at time ' t ' is $1.3 \times 10-4 mol L ^{-1} s^{-1}$. Calculate at this time:
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