Covalent bonds are formed by the ………. of electrons between two atoms so that both can achieve a
completely filled outermost shell.
completely filled outermost shell.
Anonymous Quiz
69%
Sharing
21%
Pairing
9%
Evolving
1%
None
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……. is a versatile element that forms the basis for all living organisms and many of the things we use.
Anonymous Quiz
64%
Carbon
18%
Sulphur
16%
Graphite
2%
None
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How many water molecules does hydrated cal-cium sulphate contain?
Anonymous Quiz
21%
5
33%
10
20%
7
26%
2
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Demo Test Link - https://bit.ly/3SBGNUF
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When rays of light after reflection meet a point ………….. image is formed.
Anonymous Quiz
74%
Real
26%
Virtual
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According to laws of reflection, the angle of incidence is equal to angle of ……………..
Anonymous Quiz
67%
Reflection
33%
Refraction
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According to laws of reflection, the angle of incidence is equal to angle of ……………..
Anonymous Quiz
72%
Concave
28%
Convex
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Power of convex lens is positive and concave lens is ………………
Anonymous Quiz
23%
Positive
77%
Negative
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Shubham Jha - Class 10
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