Entry Test MCQ :: MCAT ECAT Chemistry Paper

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51.

Which of following metals can be displaced by all other metals from its solution

A.	Ag	B.	A?
C.	Au	D.	Cu

52.

The unit of the rate constant (k) is same as that of rate of reaction

A.	First order reaction	B.	Second order reaction
C.	Zero order reaction	D.	Third order reaction

53.

Which of the elements do not fall in stair case of the modern periodic table

A.	Si	B.	As
C.	Te	D.	None of the above

54.

Acid present in acid rain may be

A.	H2SO4	B.	HNO3
C.	both a and b	D.	none of the above

55.

Across short period the melting and boiling point increase upto

A.	IIIA group	B.	IVA group
C.	VA group	D.	VIA group

56.

Which of the following elements conduct electricity and also melts below 100?C

A.	Aluminium	B.	Sodium
C.	Carbon	D.	Sulphur

57.

Which of the following is the formula of chrome red.

A.	Pb3 O4	B.	2Pb CO3 - Pb (OH)2
C.	Pb Cr O4 - Pb (OH)2	D.	Pb2O

58.

The compound which is added to leaded gasoline to save engine from lead oxide and lead sulphate deposits is

A.	Ethylene iodide	B.	Ethylene bromide
C.	Ethylene chloride	D.	Ethylene fluoride

59.

Regular coiling or zigzagging of polypeptide through hydrogen bonding is its

A.	Quantum structure	B.	Secondary structure
C.	Tertiary structure	D.	Primary structure