JEE Main 2022 (Online) 24th June Evening Shift | s-Block Elements Question 45 | Chemistry

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JEE Main 2022 (Online) 24th June Evening Shift

MCQ (Single Correct Answer)

-1

In the industrial production of which of the following, molecular hydrogen is obtained as a byproduct?

NaOH

NaCl

Na metal

Na₂CO₃

JEE Main 2022 (Online) 24th June Evening Shift

MCQ (Single Correct Answer)

-1

Which one of the following compounds is used as a chemical in certain type of fire extinguishers?

Baking soda

Soda ash

Washing soda

Caustic soda

JEE Main 2022 (Online) 24th June Evening Shift

MCQ (Single Correct Answer)

-1

In the flame test of a mixture of salts, a green flame with blue centre was observed. Which one of the following cations may be present?

Cu²⁺

Sr²⁺

Ba²⁺

Ca²⁺

JEE Main 2022 (Online) 24th June Morning Shift

MCQ (Single Correct Answer)

-1

Which of the following statements are correct?

(A) Both LiCl and MgCl₂ are soluble in ethanol.

(B) The oxides Li₂O and MgO combine with excess of oxygen to give superoxide.

(D) Li₂O is more soluble in water than other alkali metal oxides.

Choose the most appropriate answer from the options given below :

(A) and (C) only

(A), (C) and (D) only

(B) and (C) only

(A) and (D) only

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