1
TS EAMCET 2022 (Online) 19th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

Phosphorus and phosphoric acids are, respectively,

............... acids.

A

dibasic, tribasic

B

tribasic, tribasic

C

tribasic, dibasic

D

tetrabasic, tribasic

2
TS EAMCET 2022 (Online) 19th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

The correct order of Lewis acidic character of boron trihalides is

A

$\mathrm{BF}_3>\mathrm{BCl}_3>\mathrm{BI}_3>\mathrm{BBr}_3$

B

$\mathrm{BI}_3>\mathrm{BBr}_3>\mathrm{BF}_3>\mathrm{BCl}_3$

C

$\mathrm{BI}_3>\mathrm{BBr}_3>\mathrm{BCl}_3>\mathrm{BF}_3$

D

$\mathrm{BF}_3>\mathrm{BCl}_3>\mathrm{BBr}_3>\mathrm{BI}_3$

3
TS EAMCET 2022 (Online) 19th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

The acidic oxide from the following is

A

$\mathrm{SnO}_2$

B

$\mathrm{SiO}_2$

C

$\mathrm{PbO}_2$

D

SnO

4
TS EAMCET 2022 (Online) 19th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

A nitrogen oxide that forms "in situ" when dilute $\mathrm{FeSO}_4$ is treated with aqueous solution of nitrate ion and then careful addition of conc. $\mathrm{H}_2 \mathrm{SO}_4$ along the sides of test tube, is

A

$\mathrm{NO}_2$

B

NO

C

$\mathrm{N}_2 \mathrm{O}$

D

$\mathrm{N}_2 \mathrm{O}_3$

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