1
TS EAMCET 2020 (Online) 10th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

What is the nature of the bonding in anhydrous $\mathrm{AlCl}_3$ and hydrated $\mathrm{AlCl}_3$ respectively?

A

Ionic and ionic

B

Ionic and covalent

C

Covalent and ionic

D

Covalent and covalent

2
TS EAMCET 2020 (Online) 10th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following elements reacts with water?

A

C

B

Ge

C

Sn

D

Pb

3
TS EAMCET 2020 (Online) 10th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

Biochemical oxygen demand (BOD) is a measure of organic materials present in water, BOD value less than 5 ppm indicates a water sample to be

A

rich in dissolved oxygen

B

poor in dissolved oxygen

C

highly polluted

D

not suitable for aquatic life

4
TS EAMCET 2020 (Online) 10th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

Sodium fusion extract of aniline when heated with ferrous sulphate solution and then acidified with concentrated $\mathrm{H}_2 \mathrm{SO}_4$ from which of the following complexes?

A

$\left[\mathrm{Fe}(\mathrm{CN})_6\right]^{4-}$

B

$\mathrm{Fe}_4\left[\mathrm{Fe}(\mathrm{CN})_6\right]_3 \cdot \times \mathrm{H}_2 \mathrm{O}$

C

$[\mathrm{Fe}(\mathrm{SCN})]^{2+}$

D

$\left[\mathrm{Fe}(\mathrm{CN})_5 \mathrm{NOS}\right]^{4-}$

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