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) 40^o C
B) 400^o C
C) 600^o C
D) 800^o 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)

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