1
VITEEE 2023
MCQ (Single Correct Answer)
+1
-0

ortho-silicate ion is

A
$$\mathrm{SiO}_2^{2-}$$
B
$$\mathrm{SiO}_4^{4-}$$
C
$$\mathrm{Si}_2 \mathrm{O}_4^{6-}$$
D
$$\mathrm{SiO}_3^{-}$$
2
VITEEE 2023
MCQ (Single Correct Answer)
+1
-0

Which is correct about zero order reaction?

A
Rate of reaction is dependent of concentration
B
Unit of rate constant is concentration$${ }^{-1}$$ time$$^{-}$$
C
The plot of concentration of reactant versus time is linear with negative slope and non-zero intercept.
D
The plot of concentration of reactant versus time is linear with positive slope and non-zero intercept.
3
VITEEE 2023
MCQ (Single Correct Answer)
+1
-0

Which of the following compounds is used as the starting material for the preparation of potassium dichromate?

A
$$\mathrm{K}_2 \mathrm{SO}_4 \cdot \mathrm{Cr}_2\left(\mathrm{SO}_4\right)_3 \cdot 24 \mathrm{H}_2 \mathrm{O}$$ (chrome alum)
B
$$\mathrm{PbCrO}_4$$ (chromite yellow)
C
$$\mathrm{FeCr}_2 \mathrm{O}_4$$ (chromite)
D
$$\mathrm{PbCrO}_4 \cdot \mathrm{PbO}$$ (chrome red)
4
VITEEE 2023
MCQ (Single Correct Answer)
+1
-0

The total number of metal-metal bond present in $$\left[\mathrm{Co}_2(\mathrm{CO})_8\right]$$ is

A
0
B
3
C
2
D
1
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