Chemistry Mcqs

Which of the following technique is used for the separation of insoluble particles from liquids ?

• (A)  Filtration
• (B)  Crystallization
• (C)  Solvent extraction
• (D)  Chromatography

Answer

Submitted By :Ali Uppal

Which of the following way in used for classification of chromatography ?

• (A)  Shape
• (B)  Phase
• (C)  Mechanism
• (D)  All

Answer

Submitted By :Ali Uppal

Neutrons moving with an energy of 1.2 MeV are called_______________?

• (A)  Fast neutrons
• (B)  Slow neutrons
• (C)  Moderate neutrons
• (D)  All are possible

Answer

Submitted By :Ali Uppal

When 6d orbital is complete the entering electron goes into_________________?

• (A)  7f
• (B)  7s
• (C)  7p
• (D)  7d

Answer

Submitted By :Ali Uppal

Centrifugal forces are balanced in atom by__________________?

• (A)  Attractive forces
• (B)  Repulsive force
• (C)  Electrons
• (D)  Neutrons

Answer

Submitted By :Ali Uppal

_______________ can expel proteons from paraffins ?

• (A)  Electron
• (B)  Positron
• (C)  Neutron
• (D)  None of above has such capability

Answer

Submitted By :Ali Uppal

Quantum number which tells the energy of electron is________________?

• (A)  n
• (B)  1
• (C)  m
• (D)  s

Answer

Submitted By :Ali Uppal

Animal charcoal adsorbs the coloured_________________?

• (A)  impurities
• (B)  crystals
• (C)  solvents
• (D)  both A & B

Answer

Submitted By :Ali Uppal

Ratio of the amount of solute in organic and aqueous solvent is________________?

• (A)  Retardation factor
• (B)  Distribution co-efficient
• (C)  Distribution in aqueous solution
• (D)  All statements are wrong

Answer

Submitted By :Ali Uppal

95% ethanol is called_________________?

• (A)  methylated spirit
• (B)  wood spirit
• (C)  rectified spirit
• (D)  absolute alcohol

Answer

Submitted By :Ali Uppal