1
TS EAMCET 2023 (Online) 14th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The sol prepared by Bredig's arc method is $X$ and the charge of sol particles of it is $q . X$ and $q$ are respectively

A

metal sol, -ve

B

metal sol, $+v e$

C

metal sulphide sol, -ve

D

$\mathrm{TiO}_2$ sol, +ve

2
TS EAMCET 2023 (Online) 14th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The metal which is refined by Mond process is $(X)$, by van Arkel process is $(Y)$ and by zone refining is $(Z), X, Y$ and Z respectively are

A

$\mathrm{Ni}, \mathrm{Zr}, \mathrm{Ga}$

B

$\mathrm{Zr}, \mathrm{Ni}, \mathrm{Ga}$

C

$\mathrm{Ga}, \mathrm{Ni}, \mathrm{Zr}$

D

$\mathrm{Ni}, \mathrm{Ga}, \mathrm{Zr}$

3
TS EAMCET 2023 (Online) 14th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The product formed during thermal decomposition of ammonium dichromate are

A

$\mathrm{O}_2, \mathrm{H}_2 \mathrm{O}, \mathrm{Cr}(\mathrm{OH})_3$

B

$\mathrm{NO}_2, \mathrm{H}_2 \mathrm{O}, \mathrm{Cr}_2 \mathrm{O}_3$

C

$\mathrm{N}_2, \mathrm{Cr}_2 \mathrm{O}_3, \mathrm{H}_2 \mathrm{O}$

D

$\mathrm{N}_2 \mathrm{O}, \mathrm{Cr}(\mathrm{OH})_3$

4
TS EAMCET 2023 (Online) 14th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Among the hydrides of group 16 elements, the hydride $X$ has lowest boiling point and the hydride $Y$ has highest boiling point. $X$ and $Y$ respectively are

A

$\mathrm{H}_2 \mathrm{Te}, \mathrm{H}_2 \mathrm{Se}$

B

$\mathrm{H}_2 \mathrm{O}, \mathrm{H}_2 \mathrm{Te}$

C

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

D

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

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