Entry Test MCQ :: Diagnostic Test

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21.

Which specie has unpaired electrons in antibonding molecular orbitals

A.	O2+2	B.	N2-2
C.	B2	D.	O2-2

22.

Atomic radius can be determined by

A.	X - ray diffraction	B.	Spectrophotometer
C.	Optical microscope	D.	Electron microscope

23.

For a given process the heat changes at constant pressure (qp) and at constant volume (qv) are related to each other as

A.	qp = qv	B.	qp < qv
C.	qp > qv	D.	qp = qv / 2

24.

For which system does the equilibrium constant Kc has unit of (concentration)-1

A.	N2+3H2 <=>2NH3	B.	H2+I2 <=>2HI
C.	2NO2 <=> N2H4	D.	PCI5 <=> PCI3+CI2

25.

Solubility product of AgCl is 2.0 x 10-10 mol2 dm-6. Maximum Concentration of Ag+1 ions in the solution is

A.	2.0 x 10-10 mol dm-3	B.	1.414 x 10-5 mol dm-3
C.	1.0 x 10-10 mol dm-3	D.	1.0 x 10-5 mol dm-3

26.

18g glucose is dissolved in 90g water the relative lowering in vapour pressure is equal to

A.	?	B.	5.1
C.	6	D.	one/fifty one

27.

Which of the following solution has the highest boiling point?

A.	5.85% NaCl Solution	B.	18.0 % glucose solution
C.	6.0 % urea solution	D.	All have same boiling point

28.

Stronger is the oxidizing agent greater is the

A.	Oxidation potential	B.	Redox potential
C.	e.m.f of cell	D.	standard reduction potential

29.

Which of the following can be used in laptops?

A.	Silver oxide battery	B.	Fuel cell
C.	Nickel cadmium cell	D.	Lead accumulator

30.

Which is true about Zn-Cu galvanic cell?

A.	Reduction occurs at anode	B.	K+ ion transfer from salt bridge to left beaker of ZnSO4
C.	Oxidation occurs at cathode	D.	Anode is negatively charged