1
TS EAMCET 2020 (Online) 14th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

Phosphine is prepared by the reaction of $\mathrm{P}_4$ with which of the following?

A

$\mathrm{H}_2 \mathrm{SO}_4$

B

$$NaOH$$

C

$\mathrm{H}_2 \mathrm{~S}$

D

$\mathrm{HNO}_3$

2
TS EAMCET 2020 (Online) 14th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

The most stable form of sulphur allotrope is

A

$\mathrm{S}_6$

B

$\mathrm{S}_7$

C

$\mathrm{S}_8$

D

$\mathrm{S}_{10}$

3
TS EAMCET 2020 (Online) 14th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

When $\left[\mathrm{Ti}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right] \mathrm{Cl}_3$ is heated at $250^{\circ} \mathrm{C}$, the change in colour is from

A

violet to red

B

violet to blue

C

blue to green

D

violet to colourless

4
TS EAMCET 2020 (Online) 14th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which compound is zero valent metal complex?

A

$\left[\mathrm{Cu}\left(\mathrm{NH}_3\right)_4\right] \mathrm{SO}_4$

B

$\left[\mathrm{Pt}\left(\mathrm{NH}_3\right)_2 \mathrm{Cl}_2\right]$

C

$\left[\mathrm{Ni}(\mathrm{CO})_4\right]$

D

$\mathrm{K}_3\left[\mathrm{Fe}(\mathrm{CN})_6\right]$

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