Everyday Science MCQs

5120 MCQs  (Page 288 of 512)

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Metallic characters of alkali metals_____________________?
A. Increase down the group
B. Decrease down the group
C. No regular trend
D. Remain same
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Oxidation state of an atom represents____________________?
A. Number of electrons gained
B. Number of electrons lost
C. Apparent charge in compound
D. Its vacancies
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The scientist who did not contribute in the construction of periodic table ?
A. Al-razi
B. Moseley
C. Dobereiner
D. Democritus
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Which element was not known when Mendeleev proposed his classification ?
A. Hydrogen
B. Sodium
C. Copper
D. Germanium
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Noble gases are named so because they are__________________?
A. Less reactive
B. Zero group elements
C. Having completely filled valence shell
D. All
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The longest period in the modern periodic table is___________________?
A. 6th
B. 7th
C. 2nd and 3rd both
D. 5th
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Seventh period contains _________________ normal elements ?
A. 2
B. 4
C. 6
D. 8
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Modern periodic table has been divided in ___________ blocks?
A. 2
B. 4
C. 8
D. 7
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Amphoteric exides are those which possess ____________ properties?
A. Acidic
B. Basic
C. Acidic and basic
D. Neutral and acidic
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Hydrogen resembles with carbon because of having________________?
A. Same number of electrons in the valence shell
B. Similar physical state
C. Remarkable reducing properties
D. Homovalent (show same valency)
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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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