Question 5

Three beakers labelled as A, B and C each containing 25 mL of water were taken. A small amount of $\text{NaOH}$, anhydrous ${\text{CuSO}}_4$ and $\text{NaCl}$ were added to the beakers A, B and C respectively. It was observed that there was an increase in the temperature of the solutions contained in beakers A and B, whereas, in case of beaker C, the temperature of the solution falls. Which one of the following statement(s) is/are correct?

(i) In beakers A and B, an exothermic process has occurred.
(ii) In beakers A and B, an endothermic process has occurred.
(iii) In beaker C exothermic process has occurred.
(iv) In beaker C endothermic process has occurred.

(a) (i) only
(b) (ii) only
(c) (i) and (iv)
(d) (ii) and (iii)

Q. Three beakers labelled as $A,B$ and $C$ each containing 25 mL of water were taken. A small amount of $NaOH$, anhydrous $CuS{O}_4$ and $NaCl$ were added to the beakers $A,B$ and $C$ respectively. It was observed that there was an increase in the temperature of the solutions contained in beakers $A$ and $B$, whereas in case of beaker $C$, the temperature of the solution falls. Which one of the following statement(s) is(are) correct ?
(i) In beakers $A$ and $B$, exothermic process has occurred.
(ii) In beakers $A$ and $B$, endothermic process has occurred.
(iii) In beaker $C$ exothermic process has occurred.
(iv) In beaker $C$ endothermic process has occurred.

Q. Two beakers of capacity $500mL$ were taken. One of these beakers, labelled as "A", was filled with $400mL$ water whereas the beaker labelled "B" was filled with $400mL$ of $2M$ solution of $NaCl$. At the same temperature, both the beakers were placed in closed containers of the same material and same capacity as shown in the figure.
At a given temperature, which of the following statements is correct about the vapour pressure of pure water and that of $NaCl$ solution?

Q. There are 3 beakers containing plain water- A,B and C. Salt is added to beaker B. Sugar is added to beaker C. A raisin is put in each of these beakers. In which of these beakers, size of raisin would be maximum?

Q. Two beakers of capacity $500mL$ were taken. One of these beakers, labelled as “a”, was filled with $400mL$ water whereas the beaker labelled “b” was filled with $400mLof2M$ solution of $NaCl$. At the same temperature both the beakers were placed in closed containers of same material and same capacity as shown in the given figure.


At a given temperature, which of the following statement is correct about the vapour pressure of pure water and that of $NaCl$ solution.

Q.

Two beakers of capacity 500 mL were taken. One of these beakers, labelled as "A", was filled with 400 mL water whereas the beaker labelled "B' was filled with 400 mL of 2M solution of NaCl. At the same temperature both the beakers were placed in closed containers of same material and same capacity as shown in figure.



At a given temperature, which of the following sttement is correct about the vapour pressure of pure water and that of $Na{C}^1$ Solution?
(a) Vapour pressure in container (A) is more than that in container (B)
(b) Vapour pressure in container (A) is less than that in container (B)
(c) Vapour pressure is equal in both the containers
(d) Vapour pressure in container (B) is twice the vapour pressure in container (A)