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Quiz 6
Mdcat-past-papers - IBA Quiz
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Board: IBA |
101. Which atom has at least single electron in dumbell shape orbital?
H
He
Li
B
102. Which of following adhesive is used to bond broken pieces of jewelry?
Super glue
Epoxy resin
Silicon resin
Starch
103. Ratio of sigma bonds and pi bonds present in benzene are:
4:1
1:4
2:3
6:1
104. Which one is addition polymer?
polyvinyl chloride
nylon 6,6
nylon 6,10
polyester
105. When one mole of a substance is decomposed preferably as compared to evaporation then decomposition has:
Low energy
High energy
Equal energy
Cannot predicted
106. At start of reaction:
Average rate is high
Instantaneous rate is high
Both rates are same
Both rates are slow
107. Which is not true about benzene:
Sp² hybridization
Fractional bond order
No elimination reaction
6 sites for monosubstitution
108. During Clemmenson reduction of aldehyde and ketone, carbonyl group into alkane group is carried out with:
H₂ and Pd
LiAlH₄
Zn/Hg conc.HCl
NH₂-NH₂/KOH
109. Consider the given reaction: N2+3H2→2NH3. If 56 g of N2 reacts with 12 g of H2 and produces 51 g of NH3, what is the theoretical yield (TY) of NH3 and the percentage yield (PY) of the reaction? (Molar mass of N2 = 28 g/mol, H2 = 2 g/mol and NH3 = 17 g/mol)
TY = 68 g and PY = 75%
TY = 34 g and PY = 67%
TY = 68 g and PY = 33%
TY = 34 g and PY = 75%
110. When SHE is connected with Cu electrode using salt bridge and external wire:
Cu reduces
Cu2+ reduces
H+ reduces
H2 reduces
111. The ionic compound among the following with the highest lattice energy is:
LiF
NaCl
KCl
CsI
112. All of following have two bond pairs and show linear geometry except:
SnCl2
CS2
HCN
CO2
113. If ionization energy of an element is greater then:
More is it's reducing power
More is it's electropositivity
Less is it's metallic character
More is it's atomic radius
114. Which compounds all not show geometrical isomerism:
But-2-ene
1,2-dimethylcyclopropane
Pent-1-ene
1,3-dimethylcyclopentane
115. The mass of hydrogen gas needed to produce 51g ammonia:
6g
9g
12g
15g
116. Digestion of protein started when food enters in:
Mouth
Stomach
Intestine
Epiglottis
117. Select the standard condition for temperature and pressure:
1 atm and 0K
760 torr and 25°C
2 bar and 25°C
14.7 psi and 0°C
118. Which of the following is NOT a state function?
Enthalpy
Work
Internal energy
Pressure
119. Which one is not a type of stereoisomerism?
Confirmational isomerism
Optical isomerism
Geometrical isomerism
Metamerism
120. Formic acid reacts with ethanol in presence of acid catalyst produces:
Ester
Ether
Acid anhydride
Phenol
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