1
KCET 2023
MCQ (Single Correct Answer)
+1
-0

The reducing agent in the given equations

$$4 \mathrm{Ag}(s)+8 \mathrm{CN}^{-}(a q)+2 \mathrm{H}_2 \mathrm{O}(a q)+\mathrm{O}_2(g) \longrightarrow 4\left[\mathrm{Ag}(\mathrm{CN})_2\right]^{-}(a q)+4 \mathrm{OH}^{-}(a q)$$

$$2\left[\mathrm{Ag}(\mathrm{CN})_2\right]^{-}(a q)+\mathrm{Zn}(s) \longrightarrow {\left[\mathrm{Zn}(\mathrm{CN})_4\right]^{2-}(a q)+2 \mathrm{Ag}(s)}$$

A
$$\mathrm{Zn}$$
B
$$\mathrm{O}_2$$
C
$$\mathrm{H}_2 \mathrm{O}$$
D
$$\mathrm{CN}^{-}$$
2
KCET 2023
MCQ (Single Correct Answer)
+1
-0

For the formation of which compound in Ellingham diagram $$\Delta G^{\circ}$$ becomes more and more negative with increase in temperature?

A
$$\mathrm{CO}$$
B
$$\mathrm{FeO}$$
C
$$\mathrm{ZnO}$$
D
$$\mathrm{Cu}_2 \mathrm{O}$$
3
KCET 2023
MCQ (Single Correct Answer)
+1
-0

Which of the following compound does not give dinitrogen on heating?

A
$$\mathrm{Ba}\left(\mathrm{N}_3\right)_2$$
B
$$\mathrm{NH}_4 \mathrm{NO}_2$$
C
$$\mathrm{NH}_4 \mathrm{NO}_3$$
D
$$\left(\mathrm{NH}_4\right)_2 \mathrm{Cr}_2 \mathrm{O}_7$$
4
KCET 2023
MCQ (Single Correct Answer)
+1
-0

Aqueous solution of raw sugar when passed over beds of animal charcoal, it becomes colourless. Pick the correct set of terminologies that can be used for the above example.

A
Adsorbent Adsorbate Process
Solution of sugar Animal charcoal Sorption
B
Adsorbent Adsorbate Process
Animal charcoal Solution of sugar Absorption
C
Adsorbent Adsorbate Process
Animal charcoal Colouring substance Adsorption
D
Adsorbent Adsorbate Process
Colouring substance Animal charcoal Adsorption
EXAM MAP