Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app

JEE Main 20209 JanuaryEvening Shift

Exam: JEE Main
Year: 2020
Date: 9 January
Shift: Evening Shift
Subject: Chemistry
Chapter: Hydrogen

JEE Main 2020 · 9 January · Evening Shift · Chemistry · Hydrogen

5g of zinc is treated separately with an excess of ( a ) dilute...

5g

of zinc is treated separately with an excess of

( a )

dilute hydrochloric acid and

( b )

aqueous sodium hydroxide.
The ratio of the volumes of

{H}_{2}

evolved in these two reactions is:

Options

A $1: 2$
B $1: 1$
C $1: 4$
D $2: 1$

Correct answer

B. $1: 1$

Step-by-step solution

Zn + 2NaOH ⟶ {Na}_{2}{ZnO}_{2} + {H}_{2}

Zn + 2HCl \to {ZnCI}_{2} + {H}_{2}

According to stoichiometry in both the reactions, equal number of moles of

{H}_{2}

are evolved

Practice Hydrogen on Quantrex Academy →

More from Hydrogen

The mass of iron converted into Fe_3O_4 by the action of 18 g of steam is : (Given… JEE Main 2026 During water-gas shift reaction JEE Main 2023 Given below are two statements, one is labelled as Assertion A and the other is labelled… JEE Main 2023 Given below are two statements: Statement I: Permutit process is more efficient compared… JEE Main 2023 Match List I with List II List I Type of Hydride List II Example A Electron deficient… JEE Main 2023 Which hydride among the following is less stable? JEE Main 2023 Given below are two statements: one is labelled as Assertion A and the other is labelled… JEE Main 2023 Given below are two reactions, involved in the commercial production of dihydrogen ( H _… JEE Main 2023 Full Hydrogen list All JEE Main PYQs