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Quiz 5
Mdcat-past-papers - ETEA - Chemistry Quiz
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Board: ETEA | Subject: Chemistry |
81. Which one of the following elements has the largest second ionization energy?
K
Ca
Cl
Bi
82. What is the reason for small atomic radii of sodium ions as compared to sodium atom?
Electronegativity
Effective nuclear charge
Shielding effect
Electron affinity
83. Which of the following ions forms most stable complex compound?
Cu+2
Ni+2
Fe+2
Mn+2
84. All alkaline metals are white in colour except:
Beryllium
Magnesium
Calcium
Strontium
85. Which one has Prussian blue colour?
Ferric hexa cyano ferrate (II)
Iron (III) hexa cyano ferrate (II)
Sodium hexa cyano ferrate (III)
Both A and B
86. Brass is an alloy of:
Copper and Iron
Copper and Magnesium
Copper and Zinc
Copper and Silver
87. Flame tests identify alkali metals when they are burnt. Which of the combinations given is the correct one?
Li: Red
Na: Lilac
K: Red
Cs: Yellow
88. H₂O has geometry:
Regular tetrahedron
Linear
Distorted tetrahedral geometry
Pyramidal
89. The element chlorine is found in gaseous state while bromine is found in:
Solid state
Liquid state
Crystalline form
Condensed form
90. Which compound is formed when magnesium is reacted with 2 molecules of water?
Mg(OH)₂
MgOH
Mg:OH
Mg:(OH)₂
91. Which pair of ions have five unpaired electrons?
Fe²⁺ and Mn²⁺
Fe³⁺ and Mn²⁺
Fe²⁺ and Mn³⁺
Fe³⁺ and Mn²⁺
92. Electronegativity of Al is approximately equal to:
B
Be
Na
Mg
93. Which of the following alkali metals forms only normal oxide with O₂?
K
Na
Li
Rb
94. Third period element that initially reacts rapidly with oxygen to form a protective oxide coating that prevents further reactions is:
Al
Na
Mg
Si
95. Cu²⁺ salt solution is blue in color due to transition of electrons from:
d to d orbital
p to p orbital
p to d orbital
s to p orbital
96. Potassium ferrocyanide is which type of salt?
Complex
Mixed
Double
Normal
97. All of the following compounds are organic except:
KOCN
C₆H₅OH
CH₃COCH₃
CH₃OH
98. Name of ketone functional group is:
Amino
Carbonyl
Carboxyl
Formyl
99. Pyridine belongs to which class of organic compounds?
Alicyclic
Homocyclic
Heterocyclic
Hydrocarbon
100. Which of the following elements cannot be detected directly in a given organic compound?
Chlorine
Oxygen
Nitrogen
Phosphorus
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