Chemistry MCQS

Chemistry Mcqs for Test Preparation from Basic to Advance. Chemistry Mcqs are from the different sections of Chemistry Subject. Here you will find Mcqs of Chemistry from Basic to Advance. Which will help you to get higher marks in Chemistry portion of test. These Mcqs are useful for students and job seekers i.e MCAT ECAT ETEA test preparation, PPSC Test, FPSC Test, SPSC Test, KPPSC Test,BPSC Test, PTS ,OTS,GTS,JTS,CTS.

The mass of decimole of electrons (NA) is___________________?

A. 1.008 mg
B. 0.184 mg
C. 0.054 mg
D. 5.4 mg

Which of the following statements is wrong about isotopes ?

A. they possess different mass number
B. they possess different physical properties
C. they possess same chemical properties
D. they possess different position in the periodic table

Qualitative analysis is carried out for _________________?

A. identification of elements
B. estimation of amounts of elements
C. molar ration of elements
D. molar volume of elements

Combustion analysis is performed to determine__________________?

A. Empirical formula
B. Molecular mass
C. Molecular formula
D. Formula mass

Isotopes differ in_________________?

A. properties which depend upon mass
B. arrangement of electrons in orbitals
C. chemical properties
D. all of the above

Which of the following methods is used to estimate hydrogen in an organic compound ?

A. Combustion method
B. Dumas method
C. Kjeldahls method
D. All of the above methods are for different purposes

The nucleus of an atom of every element will always contain____________________?

A. neutrons
B. protons and electrons
C. protons
D. protons and neutrons

When 0.5 mole of phosphoric acid is dissolved in aqueous solution how many moles of -ve and +ve ions are collected altogether ?

A. 0.5
B. 1
C. 1.5
D. 2

Dempsters mass spectrometer has number of zones / parts_________________?

A. 5
B. 4
C. 3
D. 2

All the following variables are used to describle gases except__________________?

A. pressure
B. volume
C. moles
D. density

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