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Dobereiner's triads are the group of 3 elements with
Anonymous Poll
23%
same atomic number
53%
similar chemical properties
23%
almost same atomic mass
2%
same density
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Calcium, strontium and ______ form a Dobereinerβs traid.
Anonymous Poll
41%
barium
28%
magnesium
28%
beryllium
3%
chlorine
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Lithium (Li), _______ and potassium (K) is Dobereinerβs triad.
Anonymous Poll
24%
magnesium (Mg)
12%
aluminum (Al)
59%
sodium (Na)
4%
calcium (Ca)
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A ______ is necessary to change the speed as well as the direction of motion an object.
Anonymous Quiz
70%
force
8%
inertia
13%
momentum
8%
motion
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Force which is directed towards the center of the circle is ______.
Anonymous Quiz
16%
centrifugal force
8%
gravitational force
73%
Centripetal force
3%
circular force
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In which of the following cases centripetal force is not experienced?
Anonymous Quiz
14%
Moon revolving around the earth
30%
A vehicle taking a sharp turn
11%
Stone tied to a string and rotating in a circular path
45%
Spacecraft getting launched from the earth's surface
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