Chemistry MCQS with Answers for NTS
The reference calomel electrode is made from which of the following?
ZnCI2
HgCI2
CuSO4
Hg2CI2
AI is more reactive than Fe but AI is less easily corroded than Fe Because
Iron undergoes reaction easily with water
Fe form mono and divalent ions.
It is a noble metal
Oxygen forms a protective reaction easily with water
The molal elevation constant is the ratio of the elevation in boiling point to
Mole fraction of solute
Molality
Mole fraction of solvent
Molarity
Carbon atom holding halogen in aryl halides is
Sp2-hybridesed
Which of the following is directly related to Qualitative analysis?
Separation
Calculation
Measurement
Identification
A current of 9.65 ampere flowing for 10 minutes deposits 3.0 g of the metal which is monovalent the atomic mass of the metal is
30
50
96.5
10
Which of the following belongs to the halogen family?
Polonium
Radium
Astatine
Francium
The rate of a reaction can be increased in general by all the factors except by
Increasing the activation energy
Using a catalyst
Increasing temperature
Increasing the conc. of reactants
Which one is the property of an ideal solvent
Impurities should crystallize along with the solute
Should be expensive
It should react chemically with the solute
Should be safe to use
What quantity of limestone (CaCO3) on heating will give 56 kg of CaO?
56 kg
100kg
44 kg
1000 kg
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