Chemistry MCQs Online Quiz Test 10

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First Year Chemistry MCQs Online Quiz Test

Q.1: Atomic radius can be determined by———?

  1. X – ray diffraction
  2. Spectrophotometer
  3. Optical microscope
  4. Electron microscope

A

Q.2: For which system does the equilibrium constant Kc has unit of (concentration)-1———?

  1. N2+3H2 2NH3
  2. H2+I2 2HI
  3. 2NO2 N2H4
  4. PCI5 PCI3+CI2

C

Q.3: 18g glucose is dissolved in 90g water the relative lowering in vapour pressure is equal to ———-?

  1. 8
  2. 5.1
  3. 6
  4. one/fifty one

D

Q.4: Stronger is the oxidizing agent greater is the———-?

  1. Oxidation potential
  2. Redox potential
  3. e.m.f of cell
  4. standard reduction potential

D

Q.5: Which is true about Zn-Cu galvanic cell ?

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

B

Q.6: Nitrates of which pair gives different products on thermal decomposition———-?

  1. Na K
  2. Mg Ca
  3. Li Na
  4. Li Ca

C

Q.7: Alkanes containing a methyl group on main chain at 2nd carbon are called——–?

  1. iso-alkane
  2. normal-alkane
  3. neo-alkane
  4. branched-alkane

A

Q.8: Alkanes are also known as——–?

  1. saturated hydrocarbon
  2. unsaturated hydrocarbon
  3. paraffins
  4. both A And C

C

Q.9: Hydrogenolysis results in the formation of——–?

  1. alkane
  2. alkene
  3. alkyne
  4. aldehydes

A

Q.10: Removal of CO2 is called———–?

  1. carboxylation
  2. decarboxylation
  3. esterification
  4. hydroxylation

B