1
AIIMS 2019
MCQ (Single Correct Answer)
+1
-0.33

Which of the following statement is correct for oleum?

A
It is prepared by adsorption of $$\mathrm{SO}_3$$ in conc. $$\mathrm{H}_2 \mathrm{SO}_4$$
B
It contains $$\mathrm{O}-\mathrm{O}$$ groups
C
It has six $$\mathrm{OH}$$ groups
D
None of the above
2
AIIMS 2019
MCQ (Single Correct Answer)
+1
-0.33

Which of the following can react with $$\mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}_7$$ ?

A
$$\mathrm{SO}_3^{-2}$$
B
$$\mathrm{CO}_3^{-2}$$
C
$$\mathrm{SO}_4^{-2}$$
D
$$\mathrm{NO}_3^{-}$$
3
AIIMS 2019
MCQ (Single Correct Answer)
+1
-0.33

Which element can have oxidation state from 4 to 6?

A
Fe
B
Mg
C
Co
D
Cr
4
AIIMS 2019
MCQ (Single Correct Answer)
+1
-0.33

Order of acidic nature

AIIMS 2019 Chemistry - Some Basic Concepts of Organic Chemistry Question 8 English

A
A > C > D > B
B
A > B > D > C
C
A > B > C > D
D
D > C > B > A
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