1
BITSAT 2021
MCQ (Single Correct Answer)
+3
-1

Which is true in case of [Ni(CO)4]?

A
Hybridisation of Ni is sp3
B
Hybridisation of Ni is dsp2
C
Paramagnetic
D
Square planar
2
BITSAT 2021
MCQ (Single Correct Answer)
+3
-1

Magnetic moment of in [Co(F6)]2$$-$$ of unpaired electron .......... .

A
$$\sqrt{35}$$
B
$$\sqrt{45}$$
C
$$\sqrt{40}$$
D
$$\sqrt{30}$$
3
BITSAT 2020
MCQ (Single Correct Answer)
+3
-1

According to IUPAC nomenclature sodium nitroprusside is named as

A
sodiumpentacyanonitrosylferrate (II)
B
sodiumpentacyanonitrosylferrate (III)
C
sodiumnitroferricyanide
D
sodiumnitroferrocyanide
4
BITSAT 2020
MCQ (Single Correct Answer)
+3
-1

In qualitative analysis when H2S is passed through an aqueous solution of salt acidified with dilute HCl, a black ppt. is obtained. On boiling the precipitate with dil. HNO3, it forms a solution of blue colour. Addition of excess of aqueous solution of NH3 to this solution gives

A
deep blue ppt. of Cu(OH)2
B
deep blue solution of [Cu(NH3)4]2+
C
deep blue solution of Cu(NO3)2
D
deep blue solution of Cu(OH)2 . Cu(NO3)2
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