Everyday Science MCQs

5120 MCQs  (Page 290 of 512)

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Which one of the following sets consists of all coinage metals ?
A. Cu hg au
B. Cu ag au
C. Ag au hg
D. Cu fe au
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For determining the order of reaction we use__________________?
A. Refractometric method
B. Dilatometric method
C. Optical activity method
D. Half life method
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Elements in the same vertical group of the periodic table have same_______________?
A. Number of valence electrons
B. Atomic number
C. Atomic mass
D. Atomic volume
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Which of the p-block elements are not representative elements ?
A. Alkali metals (i-a)
B. Group-14 elements (iv-a)
C. Group-18 elements (viii-a)
D. Halogens (vii-a)
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Which of the following will not form crystalline structure with opporitely charged ions_________________?
A. H+
B. H-
C. Mg2+
D. Ca2+
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Periodic table provides a basic framework to study elements with respect to their__________________?
A. Physical properties
B. Chemical properties
C. Properties of their compounds
D. All
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Concept of Triads was introduced by_______________?
A. Dobereiner
B. Newland
C. Mendeleev
D. Al-razi
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Elements with similar chemical properties appear in the_________________?
A. Same family
B. Same period
C. P block elements
D. Right upper corner
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Activated complex is formed due to________________?
A. Pressure
B. Effective collision
C. Ineffective collisions
D. Temperature
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Energy required to form transition state is called _________________?
A. Ea
B. P.e
C. V
D. K.e
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Word of the Day
25 Jul
January
a preference or special liking for something; a bias in favour of something.
2021:00:00

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