JEE Main 2021 (Online) 26th August Morning Shift | Hydrogen Question 28 | Chemistry

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JEE Main 2021 (Online) 26th August Morning Shift

MCQ (Single Correct Answer)

-1

Which one of the following when dissolved in water gives coloured solution in nitrogen atmosphere?

CuCl₂

AgCl

ZnCl₂

Cu₂Cl₂

JEE Main 2021 (Online) 26th August Morning Shift

MCQ (Single Correct Answer)

-1

Which one of the following methods is most suitable for preparing deionized water?

Synthetic resin method

Clark's method

Calgon's method

Permutit method

JEE Main 2021 (Online) 27th July Evening Shift

MCQ (Single Correct Answer)

-1

The number of neutrons and electrons, respectively, present in the radioactive isotope of hydrogen is :

1 and 1

3 and 1

2 and 1

2 and 2

JEE Main 2021 (Online) 27th July Evening Shift

MCQ (Single Correct Answer)

-1

To an aqueous solution containing ions such as Al³⁺, Zn²⁺, Ca²⁺, Fe³⁺, Ni²⁺, Ba²⁺ and Cu²⁺ was added conc. HCl, followed by H₂S.

The total number of cations precipitated during this reaction is/are :

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