Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
JEE Main2003Chemistrys Block ElementsActual

Several blocks of magnesium are fixed to the bottom of a ship to

Options

  1. Amake the ship lighter
  2. Bprevent action of water and salt
  3. Cprevent puncturing by under-sea rocks
  4. Dkeep away the sharks

Correct answer

B. prevent action of water and salt

Step-by-step solution

Magnesium provides cathodic protection and prevent rusting or corrosion.

Practice s Block Elements on Quantrex Academy →

More from s Block Elements

First and second ionization enthalpies of lithium are 520 kJ mol ⁻¹ and 7297 kJ mol ⁻¹ respectively. Energy required to convert 3.5 mg lithium (g) into Li ²⁺ (g) [ Li(g) Li ²⁺ (g) 2026The correct set that contains all kinds (basic, acidic, amphoteric and neutral) of oxides is: 2026Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R : Assertion (A) : BeCl 2 and MgCl 2 produce characteristic flame Reason (R) : T 2023Be ( OH ) 2 reacts with Sr ( OH ) 2 to yield an ionic salt. Choose the incorrect option related to this reaction from the following 2023In the given reaction cycle X , Y and Z respectively are 2023The density of alkali metals is in the order 2023Alkali metal from the following with least melting point is 2023Mg NO 3 2 . XH 2 O and Ba NO 3 2 . YH 2 O , represent formula of the crystalline forms of nitrate salts. Sum of X and Y is....... 2023 Full s Block Elements list All JEE Main PYQs