176. Basic solution is one which has pH value
A.Greater than 7
B.Equal to 7
C.Less than 7
D.PH value has nothing to do with basic solution

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177. Following elements have face-centred cubic structure
A.Gamma iron (910° to 1400°C), Cu, Ag, Au, Al, Ni, Pb, Pt
B.Mg, Zn, Ti, Zr, Br, Cd
C.α iron (below 910°C and between 1400 to 1539°C), W
D.All of the above

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178. Recrystallisation temperature can be lowered by
A.Purification of metal
B.Grain refinement
C.Working at lower temperature
D.All of the above

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179. Pearlite is a combination of
A.Ferrite and cementite
B.Cementite and gamma iron
C.Ferrite and austenite
D.Ferrite and iron graphite

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180. Austenite is a combination of
A.Ferrite and cementite
B.Cementite and gamma iron
C.Ferrite and austenite
D.Ferrite and iron graphite

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181. The transistor is made of
A.Silver
B.Gold
C.Copper
D.Germanium

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182. Lead is poured into the joint between two pipes. These pipes may be made of
A.Cast iron
B.Vitrified clay
C.Asbestos cement
D.Concrete

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