1
TS EAMCET 2020 (Online) 14th September Morning Shift
MCQ (Single Correct Answer)
+1
-0
$$ \text { Match the following : } $$
| $$ \begin{gathered} \text { List-I } \\ \text { (Compounds) } \end{gathered} $$ |
$$ \begin{gathered} \text { List-II } \\ \text { (Uses) } \end{gathered} $$ |
||
|---|---|---|---|
| A. | Boron-10 | I. | Antiseptic |
| B. | Borax | II. | Bullet proof vest |
| C. | Boron-fibre | III. | Neutron absorber |
| D. | Orthoboric-acid | IV. | Heat resistance glasses |
2
TS EAMCET 2020 (Online) 14th September Morning Shift
MCQ (Single Correct Answer)
+1
-0
Glass reacts with HF to produce
3
TS EAMCET 2020 (Online) 14th September Morning Shift
MCQ (Single Correct Answer)
+1
-0
When cold and dilute NaOH reacts with $\mathrm{Cl}_2$, which of the following is formed?
4
TS EAMCET 2020 (Online) 11th September Evening Shift
MCQ (Single Correct Answer)
+1
-0
Borax is converted into crystalline boron by the following steps :
$$ \text { Borax } \xrightarrow[\mathrm{H}_2 \mathrm{O}]{X} \mathrm{H}_3 \mathrm{BO}_3 \xrightarrow{\Delta} \mathrm{~B}_2 \mathrm{O}_3 \xrightarrow[\Delta]{Y} B $$
Identify $X$ and $Y$ respectively.
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