A) It is a salt of tartaric acid B) It possesses anisotropic properties C) It crystallizes in the orthorhombic system D) All of the above. Ans : (D)
A) Mineral oil B) Air C) Paraffin wax D) Mica. Ans : (B)
A) for the measurement of mechanical vibrations B) for measuring atmospheric pressure C) in the construction of microphones D) any of the above. Ans : (D)
A) permanent magnets B) temporary magnets C) non-magnetic materials D) none of the above. Ans : (A)
A) only in atomic systems with triplet states B) in all atomic system C) only in molecular systems D) only in atomic systems with population inversion. Ans : (D)
A) polychromatic radiation has greater penetration B) it is then possible to record a large number of diffraction spots C) it is easy to produce, polychromatic radiation D) it is less air scattering. Ans : (B)
A) 40o C B) 400o C C) 600o C D) 800o C. Ans : (B)
A) glass transition temperature B) mechanical behaviour C) thermal behaviour D) all of the above. Ans : (C)
A) silicate with exchangeable ions B) a cast iron with granite C) a four folded structure D) a phase of ZrSiO4 Ans : (A)
A) ferri-magnetic materials B) paramagnetic materials C) ferro-magnetic materials D) diamagnetic materials. Ans : (C)