MMMUT Electronics and Communication Engineering previous year question paper for CHEMISTRY (BSM 226), semester 3, Minor 1 2026. All 8 questions are listed below, each with a written answer on Nexsus.
Paper details
Subject: CHEMISTRY (BSM 226)
Branch: Electronics and Communication Engineering
Semester: 3
Exam: Minor 1 2026
Questions: 8
Questions asked in CHEMISTRY Minor 1 2026
Q1(a). Describe the seven systems of crystals. Mention and explain with examples of the type of lattices in cubic system. [5 marks]
Q1(b). Sketch the (110), (101), (011), and (111) planes in a cubic crystal. [3 marks]
Q1(c). Discuss each step to find out the miller indices of a lattice plane. Calculate the interplanar spacing for (221) plane in an SC lattice, where lattice constant is 4.2 x 10^-10 m. [3 marks]
Q2(a). Define Specific heat of solid and discuss Dulong and Petit's law. [4 marks]
Q2(b). What do you mean by crystal imperfections? Describe the Schottky and Frenkel defects. [3 marks]
Q2(c). If the spring constant for 1-d monoatomic lattice is 13.36 x 10^-25 N/m and the mass of an atom is 1 a.m.u, find out the natural cut off frequency. (1 amu = 1.67 x 10^-27 kg) [3 marks]
QQ. 1. Attempt any two parts of the following. Q.1 (a) is compulsory.
QQ. 2. Attempt any two parts of the following. Q.2 (a) is compulsory.