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Quiz 5
Mdcat-past-papers - IBA Quiz
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Board: IBA |
81. The water content of human kidney is regulated by ADH. Which of the following gland is involved in its secretion process?
Adrenal gland
Pituitary gland
Thyroid gland
Parathyroid gland
82. The heat of formation of CO and CO₂ are -26.4 Kcal and -94.0 Kcal respectively. The heat of combustion of carbon monoxide according to Hess's Law will be:
+26.4Kcal
-67.6Kcal
+94.0Kcal
-120.4Kcal
83. Rate of dehydration of alcohol is:
3°>2°>1°
1°>3°>2°
2°>3°>1°
3°>1°>2°
84. For which reaction, the value of Kc increases with increase in temperature?
CH₄ + O₂ → CO₂ + H₂O
NaOH + HCl → NaCl + H₂O
2SO₂ + O₂ → 2SO₃
H₂ + I₂ → 2HI
85. Correct order of bond energy will be:
HCl>HBr>HI
HBr>HCl>HI
HI>HCl>HBr
HCl>HI>HBr
86. Which of the following is least volatile?
Glycerol
Water
Acetic acid
Diethyl ether
87. IUPAC name of the compound is CH₃(CH₂)₆CH(CH₂):
2-methylheptane
3-methylheptane
4-methylheptane
Octane
88. IUPAC name of the compound C₂H₅CH=C(C₃H₅) C₂H₅ is:
1-2-diethyl-2-propylethene
3-ethylhept-3-ene
4-ethylhept-3-ene
4-ethylhept-2-ene
89. Which of the following molecules have similar molecular shape?
NH₃ & AlCl₃
BCl₃ & NH₃
AlCl₃ & PCl₃
H₂O & SnCl₂
90. Value of electronegativity of atoms A and B are 1.20 and 4.0 respectively, the percent ionic character will be:
43%
50%
55%
73%
91. Phenol differs from ethanol because it:
Forms stronger hydrogen bonds to its aromatic ring
Is more acidic because of resonance stabilized conjugate base
Readily undergoes nucleophilic substitution at the -OH group
Is completely insoluble in water due to its benzene ring
92. Which reagent and condition are used to bring about the reaction shown? Toluene → p-chloro toluene
Cl₂ in the dark
Cl₂ in the presence of AlCl₃
Cl₂ in the presence of UV light
Concentrated HCl heated under reflux
93. What is 50% yield when actual yield and theoretical yield are 2 g and 4 g respectively?
25%
50%
75%
85%
94. IUPAC name of CHCCI is:
Chloroethane
Chloroethyne
Chloroethene
Ethylchloride
95. The order of reactivity of following R-X for SX reaction is:
RF>RCl>RBr>RI
RBr>RF>RCl>RI
RCl>RF>RBr>RI
RI>RBr>RCl>RF
96. Among the following compounds, the most susceptible to nucleophilic attack on carbonyl carbon is:
CH3COCl
CH3CHO
CH3COOCH₃
CH3COOCOCH₃
97. Which of the following is expected to be the most paramagnetic?
Li
Be
B
C
98. The formation of activated complex in a reaction is:
Exothermic process
Endothermic process
Either endo or exo
Always energy released
99. The maximum probability of finding an electron is at a distance of:
0.53 nm
0.35 nm
0.053 nm
0.0053 nm
100. The IUPAC name of Vinyl acetylene is:
But-1-en-3-yne
But-3-en-1-yne
Pent-3-en-1-yne
Pent-2-en-4-yne
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