engineering recuitment UKPSC Polytechnic Lecturer Mock Test 2024 Engineering Materials Science Structure and Properties of Engineering Materials Crystal Structures
Consider the following Statements
1. Amorphous solids have the systematic arrangement of atoms.
2. A crystal will be mechanically weak if the dislocation density in the crystal is very high.
3. Ionic crystals are hard and brittle
Which of the above statements are correct?
1
1, 2 and 3
2
1 and 2 only
3
2 and 3 only
4
1 and 3 only