Basic Chemistry MCQs

GURU MCQs provides MCQs of Chemistry from Basic to Advance, so that you can prepare accordingly. MCQs of Chemistry section covers important topics of chemistry. Most repeated Chemistry MCQs frequently encountered in Inspector, ASI, Sub-inspector, Constable, FPSC, PPSC, ETEA, FIA, Police, Army, Navy, Airforce, IB, MOFA, ASF, LHC, Educators, and various other competitive exams, as well as government and private job assessments. Chemistry most repeated MCQs include Basic chemistry MCQs, Chemical Bond MCQs, Gases MCQs, Liquids and Solids MCQs, Hydrocarbons MCQs, Polymerization MCQs, Rates of Reactions MCQs, Transition Elements MCQs, Organic Chemistry MCQs, Electrons in Atoms MCQs, Moles and Equations MCQs, et

251. The value of activation energy is primarily determined by_______________? 

A. Temperature
B. Effective collision
C. Concentration of reactants
D. Chemical nature of reactants and products

252. Spontaneous reactions are_______________?

A. Moderate
B. Slow
C. Fast
D. not natural

253. Unit of rate of reaction is_________________?

A. Moles dm-3 sec-1
B. Moles dm-3
C. Moles sec-1
D. Mol-1 dm3 sec-1

254. Rate of disappearance of reactant is equal to_________________? 

A. Rate of reaction
B. Rate of formation of product
C. Energy released during reaction
D. A and B

255. For 3rd order reaction the hhalf life is inversely proportional to initial concentration of reactants__________________? 

A. Single
B. Square
C. Cube
D. Raise to power four

256. Radiations are absorbed in_______________? 

A. Spectrophotometer method
B. Dilatometric method
C. Optical relation method
D. Refractometric method

257. Energy of reactant higher than energy of product favours A. Endothermic_______________? 

B. Exothermic
C. Moderate reaction
D. No reaction

258. Which of the following will have very high rate of reaction ?

A. Double decomposition reaction
B. Neutralization reaction
C. Ionic reactions
D. all of above

259. Anything which increases rate of reaction without being involved in the reaction________________? 

A. Promoter
B. Catalyst
C. Inhibitor
D. All of the above

260. The soul of chemistry is dealing with___________? 

A. Internal structural changes in matter
B. Composition of matter
C. Properties of matter
D. Composition and properties of matter

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