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Chemistry MCQs Quiz For Entry Test
1. Atoms and molecules can either gain or lose electrons, forming charged particles called:
Ions (Answer)
Positrons
Electrons
Photons
2. Atoms can be evident by the use of electron microscope. field ionization microscope and:
x-rays (Answer)
Compound microscope
Telescope
Video camera
3. The calculations based on stoichiometry are known as:
Complex calculations
None of above
Simple calculations
Stoichiometric calculations (Answer)
4. First atomic theory was put forward by an English school teacher:
John Dalton (Answer)
Sanger
Maxwell
Newton
5. Swedish chemist J. Berzelius determined:
Atomic number
Atomic density
Atomic volume
Atomic mass (Answer)
6. Metals tends to lose electrons, becoming:
Positively charged ions (Answer)
All of above
Non metals
Negatively charged ions
7. The reasons for less experimental yield than theoretical yield are reversible reaction, side reaction and:
Maximization
Temperature
Pressure
Crystallization (Answer)
8. Determination of atomic masses and invention of system of writing symbols was made by:
J. Berzelius (Answer)
Democritus
None of the above
Dalton
9. The number of subatomic particles in atoms so far discovered is more than:
100 (Answer)
125
110
90
10. The branch of chemistry which deals with quantitative relationship between reactants and products in a balanced chemical equation is called:
Analytical
Inorganic chemistry
Stoichiometry (Answer)
Biochemistry
11. Covalent compounds mostly exist in the form of:
Atoms
Neutrons
Protons
Molecules (Answer)
12. The mass of one mole of iodine:
53 g
74 g
245 g (Answer)
127 g
13. A limiting reactants is one:
Which produces minimum number of moles of product. (Answer)
Which is present in least amount
Which produces maximum number of moles of product.
Does not effect the amount of product
14. An ion having negative charge is called:
Cation
Electron
Anion (Answer)
Photon
15. Non-metals tend to gain electrons, becoming:
Metals
All of above
Negatively charged ions (Answer)
Positively charged ions
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