Liquids and Solids | First Year Chemistry Past Paper MCQs | mosaicbro.com

Liquids and Solids | First Year Chemistry Past Paper MCQs

7 of 53 questions (Page 2 of 8)

Filter by Category

8 Crystals formed due to London forces of interaction are:
Correct Answer: C
Explanation: Molecular crystals (e.g., I₂, dry ice) are held by weak London dispersion forces.
9 Forces which are present between ions and water molecules are:
Correct Answer: C
Explanation: Hydration involves ion-dipole interactions between ions and polar water molecules.
10 How many allotropic forms are present in carbon?
Correct Answer: A
Explanation: Carbon has two common allotropes: diamond and graphite (others like fullerenes are less common).
11 Transition temperature of tin is:
Correct Answer: B
Explanation: Tin undergoes a transition from white (β) to gray (α) tin at 13.2°C.
12 The crystal of diamond is:
Correct Answer: B
Explanation: Diamond has a 3D covalent network of sp³-hybridized carbon atoms.
13 Liquid hydrocarbon is:
Correct Answer: D
Explanation: Hexane (C₆H₁₄) is liquid at room temperature; others (C₁-C₄) are gases.
14 The example of hexagonal system is:
Correct Answer: C
Explanation: Graphite has a hexagonal layered structure.
MCQs Bank by mosaicbro.com