1
AP EAPCET 2021 - 20th August Morning Shift
MCQ (Single Correct Answer)
+1
-0

$$\mathrm{AlF}_3$$ is soluble in HF only in the presence of KF due to formation of

A
$$\mathrm{AlH}_3$$
B
$$\left[\mathrm{AlH}_6\right]^{3-}$$
C
$$\left[\mathrm{AlF}_6\right]^{3-}$$
D
$$\mathrm{K}\left[\mathrm{AlF}_3 \mathrm{H}\right]$$
2
AP EAPCET 2021 - 20th August Morning Shift
MCQ (Single Correct Answer)
+1
-0

Potassium cyanide is made alkaline with NaOH and boiled with thiosulphate ions. The solution is cooled and acidified with HCl and this solution with iron (III) chloride produces

A
prussian blue colour solution
B
blood red colour solution
C
dark brown colour solution
D
green colour solution
3
AP EAPCET 2021 - 20th August Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following complexes formed by nickel is tetrahedral and paramagnetic?

A
$$\left[\mathrm{Ni}(\mathrm{CN})_4\right]^{2-}$$
B
$$\left[\mathrm{Ni}(\mathrm{CO})_4\right]$$
C
$$\left[\mathrm{Ni}(\mathrm{Cl})_4\right]^{2-}$$
D
$$\left[\mathrm{Ni}\left(\mathrm{NH}_3\right)_6\right]^{2+}$$
4
AP EAPCET 2021 - 19th August Morning Shift
MCQ (Single Correct Answer)
+1
-0

What is coordination number of the metal in $$\mathrm{{[Co{(en)_2}C{l_2}]^{2 + }}}$$ ?

A
3
B
4
C
5
D
6
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