Everyday Science MCQs

5120 MCQs  (Page 160 of 512)

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Which of the following terms is used for the mass of chlorine 35.5 ?
A. Relative atomic mass
B. Mass number
C. Atomic weight
D. Relative isotopic mass
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Size of molecule depends upon________________?
A. Atomicity
B. Shape of molecule
C. Both a and b
D. Difficult to predict
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Which one of the following is not the mono isotopic element ?
A. Arsenic
B. Uranium
C. Iodine
D. Nickel
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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
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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
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Combustion analysis is performed to determine__________________?
A. Empirical formula
B. Molecular mass
C. Molecular formula
D. Formula mass
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Isotopes differ in_________________?
A. Properties which depend upon mass
B. Arrangement of electrons in orbitals
C. Chemical properties
D. All of the above
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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
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The nucleus of an atom of every element will always contain____________________?
A. Neutrons
B. Protons and electrons
C. Protons
D. Protons and neutrons
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Butyl chloride gives possible isomers ?
A. 2
B. 3
C. 4
D. 5
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Word of the Day
23 Jul
Aisle
a passage between rows of seats in a building such as a church or theatre, an aircraft, or train.
طویل تنگ راستہ، نشتوں کے درمیان راستہ

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