Chemistry Mcqs Online Test 7

by September 3, 2020 Chemistry

Chemistry Mcqs Online Test 7 Preparation Question Answer

Atomic radius can be determined by?

X - ray diffraction
Spectrophotometer
Optical microscope
Electron microscope

Correct!

Wrong!

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

2.0 x 10-10 mol dm-3
1.414 x 10-5 mol dm-3
1.0 x 10-10 mol dm-3
1.0 x 10-5 mol dm-3

Correct!

Wrong!

Which specie has unpaired electrons in antibonding molecular orbitals?

O2+2
N2-2
B2
O2-2

Correct!

Wrong!

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

qp = qv
qp < qv .
qp > qv
qp = qv / 2

Correct!

Wrong!

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

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

Correct!

Wrong!

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

?
5.1
. 6
one/fifty one

Correct!

Wrong!

Stronger is the oxidizing agent greater is the?

. Oxidation potential
Redox potential
e.m.f of cell
standard reduction potential

Correct!

Wrong!

Which is true about Zn-Cu galvanic cell?

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

Correct!

Wrong!

Which of the following solution has the highest boiling point?
 

5.85% NaCl Solution
18.0 % glucose solution
6.0 % urea solution
All have same boiling point

Correct!

Wrong!

Which of the following can be used in laptops?

Silver oxide battery
. Fuel cell
. Nickel cadmium cell .
Lead accumulator

Correct!

Wrong!

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