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NAT I Engineering Chemistry MCQs With Answers
Question # 1
Which has largest first ionization energy?
Choose an answer
Li
Na
K
Rb
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Question # 2
Most common reactions of benzene and its derivatives are
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Electrophilic addition reactions
Electrophilic substitution reactions.
Nucleophilic addition reactions
Nucleophilic substitution reactions
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Question # 3
A zero order reaction is one whose rate is independent of
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Temperature of the reaction
The concentration of the reactants
The concentration of the products
The material of the vessel in which the reaction is carried out
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Question # 4
Which of the following is not present in RNA?
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Uracil
Thymine
Ribose
Phosphate
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Question # 5
ΔH
Neutralisation
is always
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Positive
Negative
Zero
Positive or negative
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Question # 6
The kinetic theory of gases predicts that total kinetic energy of a gaseous assembly depends on
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Pressure of the gas
Temperature of the gas
Volume of the gas
Pressure temperature and volume of the gas
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Question # 7
The heats evolved in combustion of rhombic and monoclinic sulphur are - 70960 and -71030 cal mol
-1
respectively what will be heat of conversion of rhombic sulphur ti monoclinic?
Choose an answer
70960 calories
71030 calories
-70 calories
+70 calories
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Question # 8
In which of the following elements +1 oxidation state is more stable than +3
Choose an answer
B
AI
Ga
Ti
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Question # 9
Among the alkaline earth metals the element forming predominantly covalent compounds is
Choose an answer
Be
Mg
Sr
Calcium
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Question # 10
Fertilizer are made by
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Nature only
Artificial methods only
Both artificial and natural methods
None of the above
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Question # 11
The total number of protons in 10 g of calcium carbonate is (N
o
= 6.023 x 10
23
)
Choose an answer
1.5057 x 10
24
2.0478 x 10
24
3.0115 x 10
24
4.0956 x 10
24
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