a2zinterviews

29.	The two elements that are frequently used for making transistors are
	A.  Silicon and germanium
	B.  Boron and aluminium
	C.  Iridium and tungsten
	D.  Niobium and columbium

Answer

Ans: A Silicon and germanium

30.	The inner back surface of the eye is called
	A.  Retina
	B.  Choroid
	C.  Cornea
	D.  Pupil

Answer

Ans: A Retina

31.	The variety of coal in which the deposit contains recognisable traces of the original plant material is
	A.  Lignite
	B.  Peat
	C.  Anthracite
	D.  Bitumen

Answer

Ans: B Peat

32.	Galvanised iron sheets have a coating of
	A.  Zinc
	B.  Chromium
	C.  Tin
	D.  Lead

Answer

Ans: A Zinc