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Chemistry General Science Test Medium Mode MCQs With Answers
Question # 1
Proxy acetyl nitrat5e (PAN) is an irritant to human beings and it affects:
Choose an answer
nose
stomach
eyes
ears
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Question # 2
A gas is heated in a closed vessel. Which of the following statement is not true for the gas?
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the intermolecular forces between particles weaken
the kinetic energy of particles increases
the total internal energy of the gas remains constant
the total internal energy of the gas increases
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Question # 3
Monosacharide belong to the group
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Fats
Carbohydrates
Lipids
Proteins
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Question # 4
When stress is applied to the metals, the metals are malleable and ductile because
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their layers slip pass each other
atoms lose electrons
mobility of electrons increased
none of the above
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Question # 5
The graph between pressure and volume at constant temperature for gas is:
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Isobaric
Isothermal
Isotherm
None of above
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Question # 6
The value of general gas constant R is derived from:
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Newton's Cooling law
Maxwell's law
Avogadro's law
Charle's law
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Question # 7
The value of R is SI units is
Choose an answer
0.0821 dm
3
. atm. J
-1
mole
-1
62.4 dm
3
torr K
-1
mole
-1
8.31 dm
3
atm. K
-1
mole
-1
8.31 JK
-1
mole
-1
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Question # 8
The most complex strueture a single polypetide can assume is
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1° structure
2°structure
3° structure
4° structure
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Question # 9
The structure of sodium chloride is
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simple cube
body centered cubic
face centered cubic
depends upon conditions
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Question # 10
The most unsymmetrical one in crystal system is
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triclinic
Li, Na, K
monoclinic
hexagonal
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Question # 11
Formula of sodium beryllite is
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Na2B4O7
Na2BeO2
BeONa
Na2B4O7 .10 H2O
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Question # 12
Hydrolysis of alkyl nitriles gives:
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alkane
alkyl halide
alkyl nitride
carboxylic acids
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Question # 13
Which element among the following belongs to Group IV-A of the periodic table?
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Barium
Iodine
Lead
Oxygen
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Question # 14
Wholer prepared urea from
Choose an answer
Ammonia
NH
4
CNO
NH
3
Uric acid
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Question # 15
The actual number of atoms or molecules taking part in rate determining step is
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Rate of reaction
Velocity of reaction
Order of reaction
Molecularly
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Question # 16
Prevention of corrosion of iron by Zn coating is called
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Galvanization
Cathodic protection
Electrolysis
Photoelectrolysis
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Question # 17
An organic compound has the following properties ; It gives a positive tri-iodomethane test; it gives a yellow ppt, with 2, 4-DNP regent; it does not react with Tollen's reagent . Which compound would give these results
Choose an answer
CH
3
CHO
CH
3
CH
2
OH
CH
3
CH
2
COCH
3
CH
3
CH
2
CH
2
CHO
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Question # 18
In a group, the ionization energy
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Increase
Decreases
Remain constant
First increases then decreases
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Question # 19
Which of the following reagent cannot be used for preparing alkyl chloride from alcohol?
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HCl + anhyd. Zncl
2
NaCl
PCl
5
SOCl
2
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Question # 20
Acetic acid is also named.
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Methanoic acid
Ethanoic acid
Propanic acid
Butanoic acid
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Question # 21
Which one of the following compounds does not have the empirical formula CH
2
O?
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Ethanoic acid, CH
3
CO
2
H
Ethanol, CH
3
CH
2
OH
Glucose, C
6
H
12
O
6
Methanal, HCHO
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Question # 22
Alkyl halides when reduced with nascent hydrogen in the presence of Zn + HCI, are converted to
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Alkynes
Alkenes
Alkanes
Alcohol
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