JEE Main 2022 (Online) 28th July Evening Shift | Hydrogen Question 8 | Chemistry

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JEE Main 2022 (Online) 28th July Evening Shift

MCQ (Single Correct Answer)

-1

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

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

JEE Main 2022 (Online) 27th July Morning Shift

MCQ (Single Correct Answer)

-1

Given below are two statements.

Statement I: Hydrogen peroxide can act as an oxidizing agent in both acidic and basic conditions.

Statement II: Density of hydrogen peroxide at $$298 \mathrm{~K}$$ is lower than that of $$\mathrm{D}_{2} \mathrm{O}$$.

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

Both Statement I and Statement II are true.

Both Statement I and Statement II are false.

Statement I is true but Statement II is false.

Statement I is false but Statement II is true.

JEE Main 2022 (Online) 26th July Evening Shift

MCQ (Single Correct Answer)

-1

The products obtained from a reaction of hydrogen peroxide and acidified potassium permanganate are

$$\mathrm{Mn}^{4+}, \mathrm{H}_{2} \mathrm{O}$$ only

$$\mathrm{Mn}^{2+}, \mathrm{H}_{2} \mathrm{O}$$ only

$$\mathrm{Mn}^{4+}, \mathrm{H}_{2} \mathrm{O}, \mathrm{O}_{2}$$ only

$$\mathrm{Mn}^{2+}, \mathrm{H}_{2} \mathrm{O}, \mathrm{O}_{2}$$ only

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