AP Polycet (Polytechnic) 2025 Previous Question Paper with Answers And Model Papers With Complete Analysis

A) Because they are malleable

B) Because they are shiny

C) Because they are sonorous

D) Because they are good conductors of heat

A) To prevent oxidation

B) To avoid rusting

C) To prevent accidental fires due to their vigorous reaction with oxygen

D) To preserve their shiny surface

A) Galvanisation

B) Anodising

C) Electrolysis

D) Oxidation

A) No reaction takes place

B) Both metals react with each other to form an alloy

C) Iron displaces zinc and forms iron sulfate

D) Zinc displaces iron and forms zinc sulfate

A) Covalent bond

B) Metallic bond

C) Ionic bond

D) Hydrogen bond

A) Calcination

B) Electrolysis

C) Roasting

D) Smelting

A) Hematite

B) Cinnabar

C) Galena

D) Bauxite

A) Single bond

B) Double bond

C) Triple bond

D) Ionic bond

A) Presence of strong covalent bonds

B) Free electrons in its layered structure

C) Its rigid three-dimensional structure

D) Its slippery texture

A) Valency

B) Electronegativity

C) Catenation

D) Ionization