Title 01. THE SOLID STATE.docx ✅

(1.)Which of the following is a crystalline solids [Page: 2] (a) NaCl & Quartz (b) Quartz glass (c) Rubber (d) Glass (2.)Which of the following statements about amorphous solids is incorrect [Page: 2] (a) They are rigid and incompressible (b) These is no orderly arrangement of particles (c) They are anisotropic (d) They melt over a range of temperature (3.)Which of [he following property is not the property of crystalline solids [Page: 3] (a) Anisotropy (b) long range order in arrangement of constituent particles (c) Gradually softer over a range of temperature (d) Melt at a sharp and characteristic temperature (4.)Which of the following is a covalent/network crystal? [QR Code, NCERT Exemplar, Page: 6] (a) 2Quartz SiO (b) SiC (c) AlN (d) All (5.)Which of the following is a molecular crystal? [Page: 6] (a) Dr y i c e (b) Ro c k s a l t (c) Di a m o n d (d) Qu a r t z
(6.) Given: [Page: 6, 7] Column‐A Column‐B (A) ionic solid (I) NaCl (B) metallic solid (II) Fe (C) co‐valent solid (III) C (Graphite) (D) molecular solid (IV) Dry ice (a)A-II,B-I,C-IV,D-III (b) A-I,B-II,C-III,D-IV (c) A-III,B-II,C-I,D-IV (d) A-II,B-IV,C-I,D-III (7.) Monoclinic crystal has dimension [Page: 8] (a) ooabc;90;90 (b) oabc;90 (c) oabc;90 (d) oabc;90 (8.)The unit cell with crystallographic dimensions, oabc,90 is [Page: 9] (a) mo n o c l i n i c (b) tri c l i n i c (c) tet r a g o n a l (d) he x a g o n a l (9.)Which type of crystals contain only one Bravais lattice [Page: 9] (a) Hexagonal
(b) Triclinic (c) Rhombohedral (d) All of the above (10.)Which of the following statement is not true about amorphous solids? [QR Code, NCERT Exemplar, Page: 3] (a) On hearing they may become crystalline at certain temperature. (b) They may become crystalline on keeping for long time. (c) Amorphous solids can be moulded by hearing. (d) They are anisotropic in nature. (11.)Amorphous solid can also be called [Page: 3] (a) pseudo solids (b) True solids (c) super‐cooled liquids (d) Both (a) & (c) (12.)Which of the following exists as co‐valent crystals in the solid state? [Page: 5] (a) silicon (b) sulphur (c) phosphorus (d) Iodine (13.) The interparticle forces in solid hydrogen are: [Page: 6] (a) Hydrogen bonds (b) Covalent bonds (c) Co‐ordinate bonds (d) van der Waal’s force (14.) ZnS is [Page: 6] (a) Ionic crystal (b) Covalent crystal (c) Metallic crystal (d) van der Waal’s crystal (15.) Match the columns I and II. [Page: 6] Column‐I Column‐ II (a.) Simple cubic and face-centred cubic (p) have these cell parameters ab c and     γ
(b.) Cubic and rhombohedral (q) are two crystal system (c.) Cubic and tetragonal (r) have only two crystallography angles of o90 (d.) Hexagonal and monoclinic (s) belong to same crystal system (a)a‐ p, s, b ‐ r, q, c ‐ q, d‐ s, r (b)a‐ r, s, b ‐ p, s, c ‐ q, d‐ p, r (c)a‐ p, s, b ‐ p, s, c ‐ q, d‐ q, r (d)a‐ p, s, b ‐ p, q, c ‐ q, d‐ q, r (16.)Which of the following exists as covalent crystals in the solid state [Page: 6] (a) Silicon (b) Sulphur (c) Phosphorus (d) Iodine (17.)The pure crystalline substance on being heated gradually first forms a turbid liquid at constant temperature and still at higher temperature turbidity completely disappears. This behaviour is a characteristics of substance forming [Page: 6] (a) liquid crystals (b) Allotropic crystals (c) Isomeric crystals (d) Isomorphous crystals (18.)A cubic crystal possesses [Page: 6] (a) 9 Plane of symmetry (b) 13 axes of symmetry (c) 1 centre if symmetry (d) All of these Practice Questions Framed from IMCERT Text (19.)The structure of NaCl is: [Page: 8] (a) fcc (b) bcc (c) primitive