JEE Main 2023 (Online) 25th January Evening Shift | Hydrogen Question 16 | Chemistry

	List I		List II
A.	Cobalt catalyst	I.	$$\mathrm{(H_2+Cl_2)}$$ production
B.	Syngas	II.	Water gas production
C.	Nickel catalyst	III.	Coal gasification
D.	Brine solution	IV.	Methanol production

Choose the correct answer from the options given below :

A-IV, B-III, C-I, D-II

A-IV, B-III, C-II, D-I

A-II, B-III, C-IV, D-I

A-IV, B-I, C-II, D-III

JEE Main 2023 (Online) 24th January Evening Shift

MCQ (Single Correct Answer)

-1

Out of Syllabus

In which of the following reactions the hydrogen peroxide acts as a reducing agent?

$$\mathrm{M{n^{2 + }} + {H_2}{O_2} \to M{n^{4 + }} + 2O{H^ - }}$$

$$\mathrm{HOCl + {H_2}{O_2} \to {H_3}{O^ + } + C{l^ - } + {O_2}}$$

$$\mathrm{PbS + 4{H_2}{O_2} \to PbS{O_4} + 4{H_2}O}$$

$$\mathrm{2F{e^{2 + }} + {H_2}{O_2} \to 2F{e^{3 + }} + 2O{H^ - }}$$

JEE Main 2022 (Online) 28th July Evening Shift

MCQ (Single Correct Answer)

-1

Out of Syllabus

The products obtained during treatment of hard water using Clark's method are :

$$\mathrm{CaCO}_{3}$$ and $$\mathrm{MgCO}_{3}$$

$$\mathrm{Ca}(\mathrm{OH})_{2}$$ and $$\mathrm{Mg}(\mathrm{OH})_{2}$$

$$\mathrm{CaCO}_{3}$$ and $$\mathrm{Mg}(\mathrm{OH})_{2}$$

$$\mathrm{Ca}(\mathrm{OH})_{2}$$ and $$\mathrm{MgCO}_{3}$$

JEE Main 2022 (Online) 28th July Morning Shift

MCQ (Single Correct Answer)

-1

Out of Syllabus

The metal salts formed during softening of hardwater using Clark's method are :

$$\mathrm{Ca}(\mathrm{OH})_{2}$$ and $$\mathrm{Mg}(\mathrm{OH})_{2}$$

$$\mathrm{CaCO}_{3}$$ and $$\mathrm{Mg}(\mathrm{OH})_{2}$$

$$\mathrm{Ca}(\mathrm{OH})_{2}$$ and $$\mathrm{MgCO}_{3}$$

$$\mathrm{CaCO}_{3}$$ and $$\mathrm{MgCO}_{3}$$

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