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Q 61.

The number of d-electrons in Fe2+ (Z = 26) is not equal to that of ?

A)  p-electrons in Ne(Z = 10)
B)  s-electrons in Mg(Z = 12)
C)  d-electrons in Fe(Z = 26)
D)  p-electrons in CI(Z = 17)
Answer & Explanation Answer: p-electrons in CI(Z = 17)

Explanation:

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MCQ Type: Chemistry, Chemistry, General Knowledge, UGC NET

Q 62.

The metal used to recover copper from a solution of copper sulphate is ?

A)  Na
B)  Ag
C)  Hg
D)  Fe
Q 63.

The most electronegative element among the following is ?

A)  Sodium
B)  Bromine
C)  Fluorine
D)  Oxygen
Q 64.

The number of moles of solute present in 1 kg of a solvent is called its ?

A)  Molality
B)  Molarity
C)  Normality
D)  Formality
Q 65.

The nucleus of an atom consists of ?

A)  Electrons and neutrons
B)  Electrons and protons
C)  Protons and neutrons
D)  All of the above
Answer & Explanation Answer: Protons and neutrons

Explanation:

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MCQ Type: Chemistry, Chemistry, General Knowledge, UGC NET

Q 66.

The metal does not give H2 on treatment with dilute HCL is ?

A)  Zn
B)  Fe
C)  Ag
D)  Ca
Q 67.

The number of g-molecule of oxygen in 6.02 x 1024CO molecules is ?

A)  1 gram of molecule
B)  0.5 gram of molecule
C)  5 gram of molecule
D)  10 gram of molecule
Answer & Explanation Answer: 5 gram of molecule

Explanation:

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MCQ Type: Chemistry, Chemistry, General Knowledge, UGC NET

Q 68.

The most extensive, commercially useful source of thorium as monazite sand occurs in India at ?

A)  Orissa coast
B)  Travancore coast
C)  West Bengal coast
D)  Gujarat coast
Answer & Explanation Answer: Travancore coast

Explanation:

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MCQ Type: Chemistry, Chemistry, General Knowledge, UGC NET

Q 69.

The main active constituent of tea and coffee is ?

A)  Nicotine
B)  Chlorophyll
C)  Caffeine
D)  Aspirin
Q 70.

The maximum number of isomers for an alkene with molecular formula C4H8 is ?

 

A)  5
B)  4
C)  2
D)  3