Download App

4. d and f- block elements — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistry4. d and f- block elements1 Mark
MCQ
The extraction of nickel involves
  • A
    The formation of $Ni{(CO)_4}$
  • B
    The decomposition of $Ni{(CO)_4}$
  • ✓
    The formation and thermal decomposition of $Ni{(CO)_4}$
  • D
    The formation and catalytic decomposition of $Ni{(CO)_4}$
✓

Answer

Correct option: C.
The formation and thermal decomposition of $Ni{(CO)_4}$
c
(c)The formation and thermal decomposition of $Ni{(CO)_4}$.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from 4. d and f- block elements→4. d and f- block elements — all question types→Chemistry STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

What reagent and/or reaction conditions would you choose to bring about the
following conversion?
→
Turnbull's blue is
→
Which of the following proteins acts as a messenger in living system
→
A solution has a  $1 : 4 $ mole ratio of pentane to hexane. The vapour pressure of the pure hydrocarbons at $ 20\,^o C$ are $440\ mm\ Hg$  for pentane and  $120\  mm\ Hg$  for hexane. The mole fraction of pentane in the vapour phase would be
→
The dissociation constant of acetic acid is $1.6 \times 10^{-5}$ and molar conductance at  infinite dilution is $380 \times 10^{-4} \,S \,m^2 \,mol^{-1}$. The specific conductance of $0.01 \,M$ acid solution is
→
Given below are two statements :

Statement I : $\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{3+}$ is a homoleptic complex whereas $\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_4 \mathrm{Cl}_2\right]^{+}$is a heteroleptic complex.

Statement II : Complex $\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{3+}$ has only one kind of ligands but $\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_4 \mathrm{Cl}_2\right]^{+}$has more than one kind of ligands.

In the light of the above statements, choose the correct answer from the options given below.

→
Glycine may be classed as all of the following except
→
Which of the following pairs of reactants is most effective in forming an enamine ?
→
Which of the following is a primary halide?
→
Find the ratio of geometrical isomers in [M(AA)2​b2​] and optical isomers of [M(AA)3​].
→