Chemistry MCQS with Answers Set 4

Chemistry MCQS with Answers
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The formula of nitre is
NaCI
Na2CO3
NaNO3
KNO3

The rotation of two carbon atoms joined by double bond would happened only if
Both bonds are broken
None of above
Sigma bond is broken
Pi bond is broken

Which has largest first ionization energy?
Li
Na
Rb
K

Which of the following process is used to separate insoluble particles from liquids?
Crystallization
Filtration
Separation
Condensation

Which of the following value of ?Hf° represent that the product is least stable?
-94.0 kcal mol-1
+64.8 
-231.6 
+21.4 

Which of the following statement regarding catalyst is not true?
A catalyst can initiate a reaction
A catalyst remains unchanged in composition and quantity at the end of the reaction
A catalyst dose not alter the equilibrium in a reversible reaction
Catalysts are sometimes very specific in respect of reaction

Which of the following elements is most electronegative?
Nitrogen
Chlorine
Oxygen
Fluorine

Fertilizer are made by
Nature only
None of the above
Both artificial and natural methods
Artificial methods only

Which one is not a pollutant normally?
Hydrocarbons
Sulphur dioxide
Carbon monoxide
Carbon dioxide

Which of the following is not present in RNA?
Phosphate
Thymine
Ribose
Uracil

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