Which one of the following pairs of solution is not an acidic buffer?

The standard heat of formation, in \(kcal / mol ^{\text {of }} Ba ^{2+}\) is :
[Given : standard heat of formation of \(SO _4^{2-}\) ion \(( aq )=-216 kcal / mol\),
Standard heat of crystallisation of
\(BaSO _4(s)=-4.5 kcal / mol\), standard heat of formation of \(\left.BaSO _4(s)=-349 kcal / mol \right]\)

Arrange the following in increasing order of stability \(1.\,\,(CH_3)_2 - \mathop C\limits^ +   - CH_2 - CH_3\) \(2.\,\,(CH_3)_3 - \mathop C\limits^ +  \) \(3.\,\,(CH_3)_2 - |\mathop C\limits^ +  H|\) \(4.\,\,CH_3 - \mathop C\limits^ + H_2\) \(5.\,\,\mathop C\limits^ +   H_3\)

Consider the following reaction for which the change in enthalpy is positive \(2 A ( g ) + B ( g ) \rightleftharpoons C ( g )+ D ( g )\) Which of the following will not affect the equilibrium?

Sugar 'X'
A. is found in honey.
B. is a keto sugar.
C. exists in \(\alpha\) and \(\beta\) - anomeric forms.
D. is laevorotatory.
'X' is :

Which of the following oxide is amphoteric in nature?

The order of stability of the following tautomeric compounds is \(\mathop {\begin{array}{*{20}{c}}
  {OH\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,||} \\ 
  {C{H_2} = C - C{H_2} - C - C{H_3}} 
\end{array}}\limits_{(I)}  \rightleftharpoons \) \(\mathop {\begin{array}{*{20}{c}}
  {OH\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,||} \\ 
  {C{H_3} - C - C{H_2} - C - C{H_3}} 
\end{array}}\limits_{(II)}  \rightleftharpoons \) \(\mathop {\begin{array}{*{20}{c}}
  {OH\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,||} \\ 
  {C{H_3} - C = CH - C - C{H_3}} 
\end{array}}\limits_{(III)} \)

Which of the following statement is correct regarding the process of replication in \(E\).coli?

Match the following hormones with the respective disease 

\((a)\) Insulin	\((i)\) Addison's disease
\((b)\) Thyroxin	\((ii)\) Diabetes insipidus
\((c)\) Corticoids	\((iii)\) Arcomegaly
\((d)\) Growth Hormone	\((iv)\) Goitre
	\((v)\) Diabetes mellitus

Select the correct option. \((a) \quad (b) \quad (c) \quad (d)\)

Which of the following is a primary consumerin maize field ecosystem ?

Asymptote in a logistic growth curve is obtained when

In which of the following devices, the eddy current effect is not used ?

The potential differences across the resistance, capacitance and inductance are \(80\,\, V, \,\,40 \,\,V\) and \(100\,\, V\) respectively in an \(L-C-R\) circuit. The power factor of this circuit is