Q. Among the following substituted pyridines, the most basic compound is:

1. 
   
2. 
   
3. 
   
4. 
   

Q. The major products in the reaction $B{r}_{3}CCHO\stackrel{NaOH}{\to }$ are:

1. 
   
2. 
   
3. 
   
4. None of these

Q. Among the quantities, density $\left(\rho \right)$, temperature(T), enthalpy(H), heat capacity$\left(C_{\rho }\right)$, volume (V) and pressure (P), a set of intensive variables are $:$

1. $(\rho ,T,H)$
2. $(H,T,V)$
3. $(\rho ,T,P)$
4. $(V,T,C_{\rho })$

Q. By dissolving $0.35$ mole of sodium chloride in water, $1.30l$ of salt solution is obtained. The molarity of the resulting solution should be reported as:

1. $0.269$
2. $0.3$
3. $0.27$
4. $0.2692$

Q. A reaction with reaction quotient $Q_C$ and equilibrium constant $K_C$, will proceed in the direction of the products when:

1. $Q_C=K_C$
2. $Q_C>K_C$
3. $Q_C<K_C$
4. $Q_C=0$

Q. The number of electrons plus neutrons in ${}_{19}^{40}{K}^{+}$ is$:$

1. $38$
2. $39$
3. $59$
4. $40$

Q. The value of $x$ in $KAl(S{O}_4{)}_x\cdot 12H_{2}O$ is:

1. $2$
2. $3$
3. $4$
4. $1$

Q. Among the following, the most basic oxide is$:$

1. $P_2{O}_5$
2. $Si{O}_2$
3. $N{a}_{2}O$
4. $A{l}_2{O}_3$

Q. The major product in the following reaction is:

1. 
   
2. 
   
3. 
   
4. 
   

Q. The major product in the following reaction at ${25}^o$C is :

1. $C{H}_{3}CH=NC{H}_{2}C{H}_3$
2. $C{H}_{3}CONHC{H}_{2}C{H}_3$
3. $N{H}^{+}C{H}_{2}C{H}_3\cdot C{H}_{3}CO{O}^{-}$
4. $C{H}_{3}CON=CHC{H}_3$

Q. The weight of calcium oxide formed by burning $20$g of calcium in excess oxygen is$:$

1. $56$g
2. $36$g
3. $28$g
4. $72$g