Everyday Science MCQs

5120 MCQs  (Page 289 of 512)

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In which of the following pairs are elements belonging to the same group ?
A. Boron & beryllium
B. Nitrogen & phosphorous
C. Magnesium & aluminium
D. Gallium & helium
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True increasing order of acidity of the oxides of Mn is_________________?
A. Mno < mno2 < mn2o7
B. Mn2o7 > mno2 > mno
C. Mno2 > mno > mn2o7
D. Mno2 > mn2o7 > mno
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Which of the following cannot exist in solution_________________?
A. O-2
B. H+
C. Cl-
D. Na+
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An element having low value of ionization energy and low value of electron affinity is likely to belong to__________________?
A. Group ia
B. Group ib
C. Group viia
D. Group viii
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Which of the following always increases on going from top to bottom in a group ?
A. Metallic character
B. Electronegativity
C. Oxidizing power
D. Tendency to get reduced
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Among halogens the highest boiling point is of___________________?
A. Flrorine
B. Chlorine
C. Bromine
D. Iodine
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In modern periodic table all the leements are arranged in ascending order of__________________?
A. Valency
B. Atomic mass
C. Atomic number
D. Valence electrons
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Inner transition elements are called _________________?
A. Lanthanides
B. Actinides
C. Rare earth metals
D. All
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Non-metals usually form _________________ oxides?
A. Acidic
B. Amphoteric
C. Neutral
D. All of the above
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Best position of hydrogen in the periodic table is above I.A Group which is mainly due to_______________?
A. Both are electropositive
B. Similar outer most shell electronic configuration
C. Both form ionic compounds
D. All
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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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